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Commit Graph

11418 Commits

Author SHA1 Message Date
Dan Gohman
7804dbce6e Rename a variable to avoid a -Wshadow warning.
llvm-svn: 96776
2010-02-22 04:04:24 +00:00
Chris Lattner
8b7f191696 enhance my hack for flags handling, this allows us to pass
CodeGen/X86/pr2182.ll.  Down to 13 x86 failures out of ~1100

llvm-svn: 96770
2010-02-22 00:47:38 +00:00
Chris Lattner
85fa3173ff fix most of the failures in the x86 suite by handling multiple
result nodes correctly.  Note that this includes a horrible hack
in DAGISelHeader which cannot be fixed reasonably without 
eliminating (parallel) from input patterns.  That, in turn,
can't be done until we support writing multiple result patterns
for the X86and_flag and related multiple-result nodes.

llvm-svn: 96767
2010-02-21 23:54:05 +00:00
Daniel Dunbar
b6b58bff88 MC: Sketch registry support for target specific assembler backends.
llvm-svn: 96762
2010-02-21 21:53:53 +00:00
Daniel Dunbar
518e9cbe46 Formatting tweaks (trailing whitespace, ordering, comments).
llvm-svn: 96761
2010-02-21 21:53:37 +00:00
Chris Lattner
1918d5b0aa fix an odd thinko in an assertion, all arm tests pass now.
llvm-svn: 96758
2010-02-21 20:57:28 +00:00
Anton Korobeynikov
0b402e1a61 It turned out that we failed to emit proper symbol stubs on non-x86/darwin for ages (we emitted a reference to a stub, but no stub was emitted). The code inside x86-32/macho target objfile lowering should actually be the generic one - move it there.
This (I really, really hope) should fix EH issues on ppc/darwin
and arm/darwin.

llvm-svn: 96755
2010-02-21 20:28:15 +00:00
Chris Lattner
4473066b55 speculatively teach OPC_CheckValueType and OPC_EmitNode to handle
MVT::iPTR.

llvm-svn: 96753
2010-02-21 20:15:25 +00:00
Chris Lattner
11ea2e1578 teach OPC_CheckType to handle MVT::iPTR, down to 2 ppc failures.
llvm-svn: 96752
2010-02-21 20:10:43 +00:00
Chris Lattner
26215565bf make this check a bit more generous, it may be outliving its
utility.  Down to 6 ppc failures.

llvm-svn: 96751
2010-02-21 20:02:15 +00:00
Chris Lattner
3d7cc59f2c Relax an assertion a bit. We allow replacing things like
<4 x i32> with <4 x float> values if they end up the same
register class.  This gets us up to 231 passes on the ppc
tests (only 7 fails).

llvm-svn: 96750
2010-02-21 19:35:07 +00:00
Chris Lattner
c7fac8c8b2 when a match fails and we have to rollback, make sure to keep 'N' in
sync with the top of stack.  This fixes a bunch of failures on larger
testcases.

llvm-svn: 96732
2010-02-21 07:55:48 +00:00
Chris Lattner
e8842eb260 handle optional in flags that aren't present.
llvm-svn: 96731
2010-02-21 07:19:06 +00:00
Chris Lattner
8a969fb824 fix two bugs in OPC_EmitRegister, which makes ppc happier.
llvm-svn: 96728
2010-02-21 06:58:27 +00:00
Chris Lattner
0164635dad implement the last known missing feature: updating uses of results
of the matched pattern to use the newly created node results.  Onto
the "making it actually work" phase!

llvm-svn: 96724
2010-02-21 06:03:07 +00:00
Charles Davis
9dbf8d7899 Reduce size of 'StackAlignment' field from 5 to 3 bits. Seriously, who needs a
2GB-aligned stack anyway? 256 bytes is plenty. Requested by Chris.

llvm-svn: 96718
2010-02-21 04:26:06 +00:00
Chris Lattner
8983077c87 Lots of improvements to the new dagisel emitter. This gets it to
the point where it is to the 95% feature complete mark, it just
needs result updating to be done (then testing, optimization 
etc).

More specificallly, this adds support for chain and flag handling
on the result nodes, support for sdnodexforms, support for variadic
nodes, memrefs, pinned physreg inputs, and probably lots of other
stuff.

In the old DAGISelEmitter, this deletes the dead code related to
OperatorMap, cleans up a variety of dead stuff handling "implicit
remapping" from things like globaladdr -> targetglobaladdr (which
is no longer used because globaladdr always needs to be legalized),
and some minor formatting fixes.

llvm-svn: 96716
2010-02-21 03:22:59 +00:00
Chris Lattner
bb364c9b46 add a hook so that the new isel can run SDNodeXForms.
llvm-svn: 96714
2010-02-21 03:15:11 +00:00
Chris Lattner
ad9fa2075b Eliminate some uses of immAllOnes, just use -1, it does
the same thing and is more efficient for the matcher.

llvm-svn: 96713
2010-02-21 03:13:10 +00:00
Bob Wilson
df432a30b2 Revert 96634. It causes assertion failures for 126.gcc and 176.gcc in
the armv6 nightly tests.

llvm-svn: 96691
2010-02-19 18:59:53 +00:00
Bob Wilson
c03fbf812d Revert Anton's most recent EH patch (r96637), since it breaks a lot of
ARM and Thumb tests.

llvm-svn: 96680
2010-02-19 17:10:59 +00:00
Duncan Sands
88c859c900 Correct LastPrimitiveTyID: MetadataType is a primitive type.
This change probably has no functional effect.

llvm-svn: 96669
2010-02-19 09:18:53 +00:00
Chris Lattner
e6302b3565 add emitter support for integer constants and simple physreg references.
llvm-svn: 96663
2010-02-19 07:49:56 +00:00
Dale Johannesen
0f58c73229 recommit 96626, evidence that it broke things appears
to be spurious

llvm-svn: 96662
2010-02-19 07:14:22 +00:00
Dale Johannesen
d73b81bf12 Revert 96626, which causes build failure on ppc Darwin.
llvm-svn: 96653
2010-02-19 01:54:37 +00:00
Anton Korobeynikov
8aaa04a614 Use the same encoding for EH stuff uniformly on all MachO targets.
This hopefulyl should unbreak EH on PPC/Darwin.

llvm-svn: 96637
2010-02-19 00:29:36 +00:00
Jim Grosbach
53ef05fa82 Radar 7636153. In the presence of large call frames, it's not sufficient
for ARM to just check if a function has a FP to determine if it's safe
to simplify the stack adjustment pseudo ops prior to eliminating frame
indices. Allow targets to override the default behavior and does so for ARM
and Thumb2.

llvm-svn: 96634
2010-02-19 00:16:24 +00:00
Dan Gohman
2f0615ee5e Indvars needs to explicitly notify ScalarEvolution when it is replacing
a loop exit value, so that if a loop gets deleted, ScalarEvolution
isn't stick holding on to dangling SCEVAddRecExprs for that loop. This
fixes PR6339.

llvm-svn: 96626
2010-02-18 23:26:33 +00:00
Mon P Wang
64cd1a8d7f getSplatIndex assumes that the first element of the mask contains the splat index
which is not always true if the mask contains undefs. Modified it to return
the first non undef value.

llvm-svn: 96621
2010-02-18 22:33:18 +00:00
Chris Lattner
4cfdecc52b add support for referencing registers and immediates,
building the tree to represent them but not emitting 
table entries for them yet.

llvm-svn: 96617
2010-02-18 22:03:03 +00:00
Jakob Stoklund Olesen
5b9d14b55e Always normalize spill weights, also for intervals created by spilling.
Moderate the weight given to very small intervals.

The spill weight given to new intervals created when spilling was not
normalized in the same way as the original spill weights calculated by
CalcSpillWeights. That meant that restored registers would tend to hang around
because they had a much higher spill weight that unspilled registers.

This improves the runtime of a few tests by up to 10%, and there are no
significant regressions.

llvm-svn: 96613
2010-02-18 21:33:05 +00:00
Devang Patel
823a78e1f8 Fix comments.
llvm-svn: 96610
2010-02-18 21:03:36 +00:00
Devang Patel
5c67cb332e Destroy MDNodes gracefully while deleting llvm context.
llvm-svn: 96609
2010-02-18 20:53:16 +00:00
Duncan Sands
ca05b607b7 Refer to -help instead of --help since this is what tools themselves say.
Also, have tools output -help-hidden rather than refer to --help-hidden,
for consistency, and likewise adjust documentation.  This doesn't change
every mention of --help, only those which seemed clearly safe.

llvm-svn: 96578
2010-02-18 14:08:13 +00:00
Eric Christopher
88fe6775de Fix a few unused parameter warnings.
llvm-svn: 96533
2010-02-17 23:55:26 +00:00
David Greene
d93fb1f15d Make the non-temporal bit "significant" in MemSDNodes so they aren't
CSE'd or otherwise combined with temporal MemSDNodes.

llvm-svn: 96505
2010-02-17 20:21:42 +00:00
Daniel Dunbar
92e99d82a2 Add Regex::sub, for doing regular expression substitution with backreferences.
llvm-svn: 96503
2010-02-17 20:08:42 +00:00
Daniel Dunbar
27247dd1e8 Fix comment.
llvm-svn: 96498
2010-02-17 19:26:45 +00:00
Chris Lattner
2ec1f1a54a move isOnlyReachableByFallthrough out of MachineBasicBlock into AsmPrinter,
and add a sparc implementation that knows about delay slots.  Patch by
Nathan Keynes!

llvm-svn: 96492
2010-02-17 18:52:56 +00:00
Chris Lattner
4f86feb7ab add missing method, PR6284
llvm-svn: 96489
2010-02-17 18:39:56 +00:00
Chris Lattner
8f3afbc621 Emulate the current isel's "IsChainCompatible" logic for now.
I'd like to eventually rip it out, but for now producing the
same selections as the old matcher is more important.

llvm-svn: 96458
2010-02-17 06:23:39 +00:00
Chris Lattner
abb5e906a7 simplify IsChainCompatible codegen, add comments. no
functionality change.

llvm-svn: 96453
2010-02-17 05:35:28 +00:00
Chris Lattner
9625fb062a make the new isel's interpreter loop call the generated
CheckComplexPattern function.  Though it is logically const,
I don't have the fortitude to clean up all the targets now,
and it not being const doesn't block anything.

llvm-svn: 96426
2010-02-17 00:41:34 +00:00
Devang Patel
bebe8e55dc Use line and column number to distinguish two lexical blocks at the same level.
llvm-svn: 96395
2010-02-16 21:39:34 +00:00
Bob Wilson
86dded571f Rename SuccessorNumber to GetSuccessorNumber.
llvm-svn: 96387
2010-02-16 21:06:42 +00:00
Bob Wilson
a866c660db Split critical edges as needed for load PRE.
llvm-svn: 96378
2010-02-16 19:51:59 +00:00
Bob Wilson
1115365fcf Refactor to share code to find the position of a basic block successor in the
terminator's list of successors.

llvm-svn: 96377
2010-02-16 19:49:17 +00:00
Chris Lattner
ebcd505b14 convert the new matcher to check intermediate nodes for a single
use and only call IsProfitableToFold/IsLegalToFold on the load
being folded, like the old dagiselemitter does.  This 
substantially simplifies the code and improves opportunities for
sharing.

llvm-svn: 96368
2010-02-16 19:15:55 +00:00
Duncan Sands
e9a13a3c60 Introduce isOpaqueTy and use it rather than isa<OpaqueType>. Also, move some
methods to try to have the type predicates be more logically positioned.

llvm-svn: 96349
2010-02-16 14:50:09 +00:00
Duncan Sands
1b33dd3c83 There are two ways of checking for a given type, for example isa<PointerType>(T)
and T->isPointerTy().  Convert most instances of the first form to the second form.
Requested by Chris.

llvm-svn: 96344
2010-02-16 11:11:14 +00:00
Chris Lattner
a9550b6d27 generate code for node and pattern predicates. Note that this won't
build if enabled, it will fail with constness issues. I'll resolve 
these next.

llvm-svn: 96336
2010-02-16 07:21:10 +00:00
Chris Lattner
104828612b add support for the new isel matcher to generate
(isprofitable|islegal)tofold checks.

llvm-svn: 96331
2010-02-16 06:10:58 +00:00
Erick Tryzelaar
f4ca539af4 Fix a typo in an LLVMOpcode enum. LLVMTrunk -> LLVMTrunc.
llvm-svn: 96324
2010-02-16 03:45:23 +00:00
Anton Korobeynikov
ef1862e256 Move TLOF implementations to libCodegen to resolve layering violation.
llvm-svn: 96288
2010-02-15 22:37:53 +00:00
Anton Korobeynikov
dccd240998 Preliminary patch to improve dwarf EH generation - Hooks to return Personality / FDE / LSDA / TType encoding depending on target / options (e.g. code model / relocation model) - MCIzation of Dwarf EH printer to use encoding information - Stub generation for ELF target (needed for indirect references) - Some other small changes here and there
llvm-svn: 96285
2010-02-15 22:35:59 +00:00
Bill Wendling
bbf95aae9f Remove c++ style comments from c header.
llvm-svn: 96266
2010-02-15 20:53:17 +00:00
Bill Wendling
8ed10ca345 Renumber Instruction enums in llvm-c.
llvm-svn: 96264
2010-02-15 20:50:51 +00:00
Evan Cheng
b5fe25544c Split SelectionDAGISel::IsLegalAndProfitableToFold to
IsLegalToFold and IsProfitableToFold. The generic version of the later simply checks whether the folding candidate has a single use.

This allows the target isel routines more flexibility in deciding whether folding makes sense. The specific case we are interested in is folding constant pool loads with multiple uses.

llvm-svn: 96255
2010-02-15 19:41:07 +00:00
Chris Lattner
ab9dc2e37b comment fix.
llvm-svn: 96248
2010-02-15 18:55:04 +00:00
David Greene
4f983d569c Add non-temporal flags and remove an assumption of default arguments.
llvm-svn: 96240
2010-02-15 17:00:31 +00:00
David Greene
0ed0396052 Add non-temporal flags to MachineMemOperand.
llvm-svn: 96226
2010-02-15 16:48:31 +00:00
Duncan Sands
2acaf3609c Uniformize the names of type predicates: rather than having isFloatTy and
isInteger, we now have isFloatTy and isIntegerTy.  Requested by Chris!

llvm-svn: 96223
2010-02-15 16:12:20 +00:00
Chris Lattner
bc3bc62709 Check in the first big step of rewriting DAGISelEmitter to
produce a table based matcher instead of gobs of C++ Code.

Though it's not done yet, the shrinkage seems promising,
the table for the X86 ISel is 75K and still has a lot of 
optimization to come (compare to the ~1.5M of .o generated
the old way, much of which will go away).

The code is currently disabled by default (the #if 0 in
DAGISelEmitter.cpp).  When enabled it generates a dead
SelectCode2 function in the DAGISel Header which will
eventually replace SelectCode.

There is still a lot of stuff left to do, which are
documented with a trail of FIXMEs.

llvm-svn: 96215
2010-02-15 08:04:42 +00:00
Chris Lattner
8e8498ea02 give SDValue an operator->, allowing V->isTargetOpcode() and
many other natural things.

llvm-svn: 96214
2010-02-15 07:11:34 +00:00
Chris Lattner
2b00dd86ae don't make insanely large node numbers for no reason,
packing somewhat densely is better than not.

llvm-svn: 96213
2010-02-15 06:39:31 +00:00
Chris Lattner
eeadc240f2 make PadToColumn return the stream so you can use:
OS.PadToColumn(42) << "foo";

llvm-svn: 96208
2010-02-15 02:17:50 +00:00
Dan Gohman
6c0fdcea5e When restoring a saved insert location, check to see if the saved
insert location has become an "inserted" instruction since the time
it was saved. If so, advance to the first non-"inserted" instruction.

llvm-svn: 96203
2010-02-15 00:21:43 +00:00
Dan Gohman
4d5f3b74e4 In rememberInstruction, if the value being remembered is the
current insertion point, advance the current insertion point.
This avoids a use-before-def situation in a testcase extracted
from clang which is difficult to reduce to a reasonable-sized
regression test.

llvm-svn: 96151
2010-02-14 03:12:47 +00:00
Dan Gohman
8985140f3e Remove a 'protected' keyword, now that SCEVExpander is no longer
intended to be subclassed.

llvm-svn: 96149
2010-02-14 02:47:26 +00:00
Daniel Dunbar
7a1fd21459 MCAssembler: Switch MCAsmFixup to storing MCFixupKind instead of just a size.
llvm-svn: 96094
2010-02-13 09:28:54 +00:00
Daniel Dunbar
8e9044353a MCAssembler: Sink fixup list into MCDataFragment.
llvm-svn: 96093
2010-02-13 09:28:43 +00:00
Daniel Dunbar
95ae012b0e MCAssembler: Switch MCFillFragment to only taking constant values. Symbolic expressions can always be emitted as data + fixups.
llvm-svn: 96092
2010-02-13 09:28:32 +00:00
Daniel Dunbar
481e926468 MCAssembler: Start applying fixups in the data section.
llvm-svn: 96090
2010-02-13 09:28:15 +00:00
Daniel Dunbar
a699e834fb MCAssembler: Add assorted dump() methods.
llvm-svn: 96089
2010-02-13 09:28:03 +00:00
Evan Cheng
6eb7ff5bbf Teach MachineFrameInfo to track maximum alignment while stack objects are being
created. This ensures it's updated at all time. It means targets which perform
dynamic stack alignment would know whether it is required and whether frame
pointer register cannot be made available register allocation.
This is a fix for rdar://7625239. Sorry, I can't create a reasonably sized test
case.

llvm-svn: 96069
2010-02-13 01:56:41 +00:00
Dan Gohman
1e93b1c022 Override dominates and properlyDominates for SCEVAddRecExpr, as a
SCEVAddRecExpr doesn't necessarily dominate blocks merely dominated
by all of its operands. This fixes an abort compiling 403.gcc.

llvm-svn: 96056
2010-02-13 00:19:39 +00:00
Chris Lattner
946403d05f give MCCodeEmitters access to the current MCContext.
llvm-svn: 96038
2010-02-12 23:12:47 +00:00
Bob Wilson
881d06c0b9 Fix a comment typo.
llvm-svn: 96027
2010-02-12 22:34:54 +00:00
Chris Lattner
2a0d9140f5 doxygenize some comments, patch by Peter Collingbourne!
llvm-svn: 96018
2010-02-12 21:54:28 +00:00
Chris Lattner
2265d6280b Add support for a union type in LLVM IR. Patch by Talin!
llvm-svn: 96011
2010-02-12 20:49:41 +00:00
Anton Korobeynikov
7073515c86 Cleanup stdcall / fastcall name mangling.
This should fix alot of problems we saw so far, e.g. PRs 5851 & 2936

llvm-svn: 95980
2010-02-12 15:28:40 +00:00
Dan Gohman
c40eb525ad Reapply the new LoopStrengthReduction code, with compile time and
bug fixes, and with improved heuristics for analyzing foreign-loop
addrecs.

This change also flattens IVUsers, eliminating the stride-oriented
groupings, which makes it easier to work with.

llvm-svn: 95975
2010-02-12 10:34:29 +00:00
Bob Wilson
2fd80c3d94 Add a new pass on machine instructions to optimize away PHI cycles that
reduce down to a single value.  InstCombine already does this transformation
but DAG legalization may introduce new opportunities.  This has turned out to
be important for ARM where 64-bit values are split up during type legalization:
InstCombine is not able to remove the PHI cycles on the 64-bit values but
the separate 32-bit values can be optimized.  I measured the compile time 
impact of this (running llc on 176.gcc) and it was not significant.

llvm-svn: 95951
2010-02-12 01:30:21 +00:00
Charles Davis
d69c12ecc6 Add a new function attribute, 'alignstack'. It will indicate (when the backends
implement support for it) that the stack should be forcibly realigned in the
prologue (and the process reversed in the epilogue).

llvm-svn: 95945
2010-02-12 00:31:15 +00:00
Chris Lattner
144a1b7a24 add a new MCInstPrinter::getOpcodeName interface, when it is
implemented, llvm-mc --show-inst now uses it to print the
instruction opcode as well as the number.

llvm-svn: 95929
2010-02-11 22:39:10 +00:00
Daniel Dunbar
3ee9e4a9a5 MC: Move assembler-backend's fixup list into the fragment.
llvm-svn: 95926
2010-02-11 21:29:46 +00:00
Daniel Dunbar
fa324dd09b MC: Move MCSectionData::Fixup out to MCAsmFixup.
llvm-svn: 95925
2010-02-11 21:29:29 +00:00
Chris Lattner
b82b965968 make getFixupKindInfo return a const reference, allowing
the tables to be const.  Teach MCCodeEmitter to handle
the target-indep kinds so that we don't crash on them.

llvm-svn: 95924
2010-02-11 21:27:18 +00:00
Chris Lattner
63870006bf refactor x86 conditional branches to use a multipattern
that generates the 1-byte and 4-byte immediate versions
from one definition.

llvm-svn: 95902
2010-02-11 19:31:22 +00:00
Jeffrey Yasskin
ad23983452 Fix some of the memcheck errors found in the JIT unittests.
llvm-svn: 95856
2010-02-11 06:41:30 +00:00
Mon P Wang
c17e781f35 The previous fix of widening divides that trap was too fragile as it depends on custom
lowering and requires that certain types exist in ValueTypes.h.  Modified widening to
check if an op can trap and if so, the widening algorithm will apply only the op on
the defined elements.  It is safer to do this in widening because the optimizer can't
guarantee removing unused ops in some cases.

llvm-svn: 95823
2010-02-10 23:37:45 +00:00
Dale Johannesen
98ed32c3d7 Allow isDebug inquiry on any MO.
llvm-svn: 95818
2010-02-10 23:03:20 +00:00
Chris Lattner
5f5bb8b16d add a virtual dtor to MCTargetExpr, hopefully silencing some warnings.
llvm-svn: 95810
2010-02-10 21:37:31 +00:00
Dan Gohman
f2323826d2 Add a hook to AssemblyAnnotationWriter to allow custom info comments
to be printed, in place of the familiar "uses=" comments.

llvm-svn: 95798
2010-02-10 20:41:46 +00:00
Dan Gohman
ec527fddf4 Use doxygen comment syntax.
llvm-svn: 95797
2010-02-10 20:23:33 +00:00
Dan Gohman
efb42fa7c7 Fix several comments which had previously been "the the" where a
different word was intended.

llvm-svn: 95795
2010-02-10 20:04:19 +00:00
Dan Gohman
92b6122204 Fix "the the" and similar typos.
llvm-svn: 95781
2010-02-10 16:03:48 +00:00
Dan Gohman
fd8f55bc9e Minor code simplification.
llvm-svn: 95780
2010-02-10 15:54:22 +00:00
Dan Gohman
2dd0d36f14 Implement operators |=, &=, and ^= for SmallBitVector, and remove the
restriction in BitVector for |= and ^= that the operand must be the
same length.

llvm-svn: 95768
2010-02-10 05:54:04 +00:00
Daniel Dunbar
d2035fb242 MC: Switch MCFixup to just hold an MCExpr pointer instead of index into the
MCInst it came from.

llvm-svn: 95767
2010-02-10 04:47:08 +00:00
Daniel Dunbar
50b2609956 Fix a signed comparison warning.
llvm-svn: 95766
2010-02-10 04:46:51 +00:00
Chris Lattner
aed1ea28cf "fixup" a comment.
llvm-svn: 95754
2010-02-10 01:46:47 +00:00
Daniel Dunbar
75df429af0 llvm-mc: Remove --show-fixups and always show as part of --show-encoding.
Also, fix a silly memory leak.

llvm-svn: 95752
2010-02-10 01:41:14 +00:00
Chris Lattner
72156036b9 fix a layering violation: VirtRegRewriter.cpp shouldn't use AsmPrinter.h.
llvm-svn: 95748
2010-02-10 01:23:18 +00:00
Chris Lattner
70fd490fa2 Stop MachineInstr.h from #including AsmPrinter.h
llvm-svn: 95741
2010-02-10 01:04:16 +00:00
Chris Lattner
db4b4d819d Move verbose asm instruction comments to using MCStreamer.
The major win of this is that the code is simpler and they 
print on the same line as the instruction again:

        movl    %eax, 96(%esp)          ## 4-byte Spill
        movl    96(%esp), %eax          ## 4-byte Reload
        cmpl    92(%esp), %eax          ## 4-byte Folded Reload
        jl      LBB7_86

llvm-svn: 95738
2010-02-10 00:47:53 +00:00
Dale Johannesen
da728faa59 more comment updates
llvm-svn: 95736
2010-02-10 00:44:23 +00:00
Dale Johannesen
59679b7966 Add isDebug argument to ChangeToRegister; this prevents
the field from being used uninitialized later in some cases.

llvm-svn: 95735
2010-02-10 00:41:49 +00:00
Chris Lattner
ca01d26903 Add ability for MCInstPrinters to add comments for instructions.
Enhance the x86 backend to show the hex values of immediates in
comments when they are large.  For example:

        movl    $1072693248, 4(%esp)    ## imm = 0x3FF00000

llvm-svn: 95728
2010-02-10 00:10:18 +00:00
Daniel Dunbar
1b050afd4e llvm-mc: Add --show-fixups option, for displaying the instruction fixup information in the asm comments.
llvm-svn: 95710
2010-02-09 23:00:14 +00:00
Daniel Dunbar
ddfda89472 MC: First cut at MCFixup, for getting fixup/relocation information out of an MCCodeEmitter.
llvm-svn: 95708
2010-02-09 22:59:55 +00:00
Chris Lattner
7acf9be6c4 move target-independent opcodes out of TargetInstrInfo
into TargetOpcodes.h.  #include the new TargetOpcodes.h
into MachineInstr.  Add new inline accessors (like isPHI())
to MachineInstr, and start using them throughout the 
codebase.

llvm-svn: 95687
2010-02-09 19:54:29 +00:00
Jeffrey Yasskin
42bf811d65 Add support for TypeBuilder<const/volatile void*, false>.
Thanks to Jochen Wilhelmy for the suggestion!

llvm-svn: 95677
2010-02-09 19:07:19 +00:00
Eric Christopher
871cf7bce2 Pull these back out, they're a little too aggressive and time
consuming for a simple optimization.

llvm-svn: 95671
2010-02-09 17:29:18 +00:00
Dan Gohman
4346bb14f7 Mention IndVarSimplify in the comment by getSmallConstantTripCount, as
is done for getTripCount.

llvm-svn: 95666
2010-02-09 17:00:40 +00:00
Dan Gohman
3e13fc968d Mention vAny and iPTRAny in a comment.
llvm-svn: 95665
2010-02-09 16:59:14 +00:00
Dale Johannesen
3f7ce68506 Debug operands should not be def or kill.
llvm-svn: 95632
2010-02-09 00:42:08 +00:00
Lang Hames
91b4cae53c Changed the definition of an "invalid" slot to include the empty & tombstone values, but not zero.
llvm-svn: 95631
2010-02-09 00:41:23 +00:00
Chris Lattner
c0d3e6c90d stop using reserved identifiers.
llvm-svn: 95630
2010-02-09 00:40:07 +00:00
Eric Christopher
428b385575 Add a new pass to do llvm.objsize lowering using SCEV.
Initial skeleton and SCEVUnknown lowering implemented,
the rest should come relatively quickly.  Move testcase
to new directory.

Move pass to right before SimplifyLibCalls - which is
moved down a bit so we can take advantage of a few opts.

llvm-svn: 95628
2010-02-09 00:35:38 +00:00
Dan Gohman
71551e837f Add explicit keywords.
llvm-svn: 95626
2010-02-09 00:29:29 +00:00
Chris Lattner
4d97e42ba6 enhance bits_storage to work with enums by using a c-style
cast instead of reinterpret_cast, fixing PR6243.  Apparently
reinterpret_cast and I aren't getting along today.

llvm-svn: 95622
2010-02-09 00:05:45 +00:00
Dan Gohman
30845777be Document that MCExpr::Mod is actually remainder.
Document that MCExpr::Div, Mod, and the comparison operators are all
signed operators.

Document that the comparison operators' results are target-dependent.

Document that the behavior of shr is target-dependent.

llvm-svn: 95619
2010-02-08 23:58:47 +00:00
Sean Callanan
dee7f5dcd4 Added header file declarations and .exports entries
for the new APIs offered by the enhanced disassembler
for inspecting operands.

llvm-svn: 95606
2010-02-08 23:34:25 +00:00
Chris Lattner
32fa6adff6 now that @GOTOFF is no longer represented as a suffix on a
MCSymbol, we can remove the 'suffix' argument of 
GetBlockAddressSymbol.  Do so.

llvm-svn: 95601
2010-02-08 23:10:08 +00:00
Chris Lattner
39d41535ad don't make hte dtor private or we can't construct the class.
llvm-svn: 95587
2010-02-08 22:07:36 +00:00
Chris Lattner
da4372a3c2 use a c-style cast instead of reinterpret-cast, as sometimes the
cast needs to adjust for a vtable pointer when going from base to
derived type (when the base doesn't have a vtable but the
derived type does).

llvm-svn: 95585
2010-02-08 22:05:38 +00:00
Dan Gohman
30a32bc593 Add const qualifiers.
llvm-svn: 95582
2010-02-08 22:00:06 +00:00
Dan Gohman
f45b7c6795 Rename the PerformTailCallOpt variable to GuaranteedTailCallOpt to reflect
its current purpose.

llvm-svn: 95564
2010-02-08 20:27:50 +00:00
Chris Lattner
b3fe7597f5 add scaffolding for target-specific MCExprs.
llvm-svn: 95559
2010-02-08 19:41:07 +00:00
Duncan Sands
983b171d40 Flesh out the list of predicates, for those who like this style. I was
looking for isPointer, and added the rest for uniformity.

llvm-svn: 95557
2010-02-08 19:36:51 +00:00
Daniel Dunbar
e56fb57d08 ImmutableIntervalMap: Fix for unqualified lookup into dependent base class, done
by clang's -fixit! :)

llvm-svn: 95551
2010-02-08 18:08:46 +00:00
Dale Johannesen
05cffb66ae Add a Debug bit to MachineOperand, for uses that
are from debug info.  Add an iterator to MachineRegisterInfo
to skip Debug operands when walking the use list.  No
functional change yet.

llvm-svn: 95473
2010-02-06 02:28:32 +00:00
Jakob Stoklund Olesen
83ebc265b3 Reintroduce the InlineHint function attribute.
This time it's for real! I am going to hook this up in the frontends as well.

The inliner has some experimental heuristics for dealing with the inline hint.
When given a -respect-inlinehint option, functions marked with the inline
keyword are given a threshold just above the default for -O3.

We need some experiments to determine if that is the right thing to do.

llvm-svn: 95466
2010-02-06 01:16:28 +00:00
Devang Patel
102b8a3103 Set DW_AT_artificial only if argument is marked as artificial.
llvm-svn: 95461
2010-02-06 01:02:37 +00:00
Jakob Stoklund Olesen
039cd8ab3a Update CodeMetrics to count 'big' function calls explicitly.
llvm-svn: 95453
2010-02-05 23:21:18 +00:00
Jakob Stoklund Olesen
670458b3be Teach SimplifyCFG about magic pointer constants.
Weird code sometimes uses pointer constants other than null. This patch
teaches SimplifyCFG to build switch instructions in those cases.

Code like this:

void f(const char *x) {
  if (!x)
    puts("null");
  else if ((uintptr_t)x == 1)
    puts("one");
  else if (x == (char*)2 || x == (char*)3)
    puts("two");
  else if ((intptr_t)x == 4)
    puts("four");
  else
    puts(x);
}

Now becomes a switch:

define void @f(i8* %x) nounwind ssp {
entry:
  %magicptr23 = ptrtoint i8* %x to i64            ; <i64> [#uses=1]
  switch i64 %magicptr23, label %if.else16 [
    i64 0, label %if.then
    i64 1, label %if.then2
    i64 2, label %if.then9
    i64 3, label %if.then9
    i64 4, label %if.then14
  ]

Note that LLVM's own DenseMap uses magic pointers.

llvm-svn: 95439
2010-02-05 22:03:18 +00:00
Jeffrey Yasskin
1604115c5a Move --march, --mcpu, and --mattr from JIT/TargetSelect.cpp to lli.cpp.
llc.cpp also defined these flags, meaning that when I linked all of LLVM's
libraries into a single shared library, llc crashed on startup with duplicate
flag definitions.  This patch passes them through the EngineBuilder into
JIT::selectTarget().

llvm-svn: 95390
2010-02-05 16:19:36 +00:00
Daniel Dunbar
96bc973155 MC: Change default comment column to 40 characters.
llvm-svn: 95378
2010-02-05 07:32:18 +00:00
Evan Phoenix
a44be8b7f3 Disable external stubs for X86-32 and X86-64
Instruction selection for X86 now can choose an instruction
sequence that will fit any address of any symbol, no matter
the pointer width. X86-64 uses a mov+call-via-reg sequence
for this.

llvm-svn: 95323
2010-02-04 19:56:59 +00:00
Chris Lattner
e43007d443 add support for the sparcv9-*-* target triple to turn on
64-bit sparc codegen.  Patch by Nathan Keynes!

llvm-svn: 95293
2010-02-04 06:34:01 +00:00
Dan Gohman
be6cf8cfb0 Change the argument to getIntegerSCEV to be an int64_t, rather
than int. This will make it more convenient for LSR, which does
a lot of things with int64_t offsets.

llvm-svn: 95281
2010-02-04 02:43:51 +00:00
Sean Callanan
7662f4139b Filled in a few new APIs for the enhanced
disassembly library that provide access to
instruction information, and fixed ambiguous
wording in the comments for the header.

llvm-svn: 95274
2010-02-04 01:43:08 +00:00
Devang Patel
83d905f82b Provide interface to identifiy artificial methods.
llvm-svn: 95240
2010-02-03 19:57:19 +00:00
Jeffrey Yasskin
92abe5abcc r94686 changed all ModuleProvider parameters to Modules, which made the
1-argument ExecutionEngine::create(Module*) ambiguous with the signature that
used to be ExecutionEngine::create(ModuleProvider*, defaulted_params).  Fixed
by removing the 1-argument create().  Fixes PR6221.

llvm-svn: 95236
2010-02-03 19:18:04 +00:00
Daniel Dunbar
d997cd69cd llvm-mc: Add --show-inst option, for showing the MCInst inline with the assembly
output.

llvm-svn: 95227
2010-02-03 18:18:30 +00:00
Zhongxing Xu
bbb98cd401 Remove redundant declaration.
llvm-svn: 95213
2010-02-03 09:05:21 +00:00
Zhongxing Xu
07020ea237 Add constructors.
llvm-svn: 95212
2010-02-03 09:04:11 +00:00
Chris Lattner
837d242070 make MachineModuleInfoMachO hold non-const MCSymbol*'s instead
of const ones.  non-const ones aren't very useful, because you can't
even, say, emit them.

llvm-svn: 95205
2010-02-03 06:18:30 +00:00
Chris Lattner
e8811c3222 change addPassesToEmitFile to return true on failure instead of its input,
add -filetype=null for performance testing and remove -filetype=dynlib,
which isn't planned to be implemented.

llvm-svn: 95202
2010-02-03 05:55:08 +00:00
Jeffrey Yasskin
853eeb0db1 Reconfigure with autoconf-2.60, and fix autoconf.ac to work with that version.
llvm-svn: 95191
2010-02-03 02:11:49 +00:00
Chris Lattner
a64be6d665 privatize a bunch of methods and move \n printing into them.
llvm-svn: 95186
2010-02-03 01:46:05 +00:00
Chris Lattner
78f57ac8dc Hook up -filetype=obj through the MachO streamer. Here's a demo:
$ cat t.ll 
@g = global i32 42
$ llc t.ll -o t.o -filetype=obj
$ nm t.o
00000000 D _g

There is still a ton of work left.  Instructions are not being encoded
yet apparently.

llvm-svn: 95162
2010-02-02 23:57:42 +00:00
Evan Cheng
9057fea7ef Revert 95130.
llvm-svn: 95160
2010-02-02 23:55:14 +00:00
Chris Lattner
643f2f9bc4 refactor code so that LLVMTargetMachine creates the asmstreamer and
mccontext instead of having AsmPrinter do it.  This allows other 
types of MCStreamer's to be passed in.

llvm-svn: 95155
2010-02-02 23:37:42 +00:00
Chris Lattner
7dd4ad3ced Remove a bunch of stuff around the edges of the ELF writer.
Now the only use of the ELF writer is the JIT, which won't be
easy to fix in the short term. :( :(

llvm-svn: 95148
2010-02-02 22:31:11 +00:00
Daniel Dunbar
eb0b81040a MC/Mach-O: Set SOME_INSTRUCTIONS bit for sections.
llvm-svn: 95135
2010-02-02 21:44:01 +00:00
Chris Lattner
21bcba21e7 eliminate all the dead addSimpleCodeEmitter implementations.
eliminate random "code emitter" stuff in Alpha, except for
the JIT path.  Next up, remove the template cruft.

llvm-svn: 95131
2010-02-02 21:31:47 +00:00
Evan Cheng
48375fbf4f Pass callsite return type to TargetLowering::LowerCall and use that to check sibcall eligibility.
llvm-svn: 95130
2010-02-02 21:29:10 +00:00
Dan Gohman
612cbcdc1a Make DenseSet's erase pass on the return value rather than swallowing it.
llvm-svn: 95127
2010-02-02 21:11:22 +00:00
Dan Gohman
c4096b6671 Fix function names in comments. Thanks Duncan!
llvm-svn: 95126
2010-02-02 21:10:27 +00:00
Chris Lattner
7d162688a9 eliminate FileModel::Model, just use CodeGenFileType. The client
of the code generator shouldn't care what object format a target
uses.

llvm-svn: 95124
2010-02-02 21:06:45 +00:00
Chris Lattner
cb4d0d0df4 remove the remnants of TargetMachOWriterInfo.
llvm-svn: 95114
2010-02-02 19:41:23 +00:00
Chris Lattner
3cae149179 Add a new top-level MachO.h file for manifest constants, fixing
a layering violation from MC -> Target.

llvm-svn: 95113
2010-02-02 19:38:14 +00:00
Chris Lattner
ff8ba8fc79 eliminate all forms of addPassesToEmitMachineCode except
the one used by the JIT.  Remove all forms of
addPassesToEmitFileFinish except the one used by the static
code generator.  Inline the remaining version of
addPassesToEmitFileFinish into its only caller.

llvm-svn: 95109
2010-02-02 19:14:27 +00:00
Chris Lattner
fa04a6e968 Inline addAssemblyEmitter into its one real caller and delete
the -print-emitted-asm option.  The JIT shouldn't have to pull
in the asmprinter.

llvm-svn: 95100
2010-02-02 18:44:12 +00:00
Duncan Sands
364e9510fb Adding missing methods for creating Add, Mul, Neg and Sub with NUW.
llvm-svn: 95086
2010-02-02 12:53:04 +00:00
Zhongxing Xu
2f90f25c13 Return value on every path.
llvm-svn: 95075
2010-02-02 07:05:31 +00:00
Zhongxing Xu
c41eb88823 simplify code.
llvm-svn: 95074
2010-02-02 06:33:32 +00:00
Zhongxing Xu
107fc8962f More logic correction: RemoveOverlap should always create new tree. Add a
parameter to record whether changes actually happened.

llvm-svn: 95073
2010-02-02 06:22:08 +00:00
Zhongxing Xu
7c9608096b Add a lookup method to the IntervalMap. The difference from the original
lookup is that if the lookup key is contained in the key, we return the data.

llvm-svn: 95070
2010-02-02 05:23:23 +00:00
Zhongxing Xu
007e05dce7 Fix a bunch of errors in the old logic.
llvm-svn: 95056
2010-02-02 02:40:56 +00:00
Zhongxing Xu
fa062ef731 11.8p1: A nested class is a member and as such has the same access rights as
any other member.

llvm-svn: 95047
2010-02-02 01:57:01 +00:00
Nate Begeman
4d489ea053 Kill the Mach-O writer, and temporarily make filetype=obj an error.
The MCStreamer based assemblers will take over for this functionality.

llvm-svn: 95033
2010-02-01 23:56:58 +00:00
Bill Wendling
8a000012f2 Add "dump" method to IVUsersOneStride.
llvm-svn: 95022
2010-02-01 22:51:23 +00:00
Duncan Sands
4db1f01c24 Do an early exit when the result is known cheaply.
llvm-svn: 95002
2010-02-01 20:57:35 +00:00
Chris Lattner
af2e10ddef eliminate a bunch of pointless LLVMContext arguments.
llvm-svn: 95001
2010-02-01 20:48:08 +00:00
Dan Gohman
0b2c2769ba Generalize target-independent folding rules for sizeof to handle more
cases, and implement target-independent folding rules for alignof and
offsetof. Also, reassociate reassociative operators when it leads to
more folding.

Generalize ScalarEvolution's isOffsetOf to recognize offsetof on
arrays. Rename getAllocSizeExpr to getSizeOfExpr, and getFieldOffsetExpr
to getOffsetOfExpr, for consistency with analagous ConstantExpr routines.

Make the target-dependent folder promote GEP array indices to
pointer-sized integers, to make implicit casting explicit and exposed
to subsequent folding.

And add a bunch of testcases for this new functionality, and a bunch
of related existing functionality.

llvm-svn: 94987
2010-02-01 18:27:38 +00:00
Dan Gohman
d1d30c5ec2 Add a getNUWMul function.
llvm-svn: 94982
2010-02-01 16:38:14 +00:00
Dan Gohman
9026a494ae Add a generalized form of ConstantExpr::getOffsetOf which works for
array types as well as struct types, and which accepts arbitrary
Constant indicies.  

llvm-svn: 94981
2010-02-01 16:37:38 +00:00
Zhongxing Xu
e075bd78c6 Add an immutable interval map, prepared to be used by flat memory model
in the analyzer. WIP.

llvm-svn: 94976
2010-02-01 10:43:31 +00:00
Zhongxing Xu
f9abfaa0c2 Simplify code. We can compare TNew with T in one batch.
llvm-svn: 94973
2010-02-01 07:32:52 +00:00
Sean Callanan
5458663492 Moved InstallLexer() from the X86-specific AsmLexer
to the TargetAsmLexer class so that clients can
actually use the TargetAsmLexer they get from a
Target.

llvm-svn: 94940
2010-01-31 02:28:18 +00:00
Bob Wilson
0f04082970 Check alignment of loads when deciding whether it is safe to execute them
unconditionally.  Besides checking the offset, also check that the underlying
object is aligned as much as the load itself.

llvm-svn: 94875
2010-01-30 04:42:39 +00:00
Junjie Gu
4d7286efef Make sure the size is doubled (not 4x).
llvm-svn: 94845
2010-01-29 21:34:26 +00:00
Jeffrey Yasskin
6838a27b47 Rename two IRReader.h functions to indicate that they return a Module
that loads its contents lazily from bitcode.  I think these are the
only remaining mis-named functions.

llvm-svn: 94840
2010-01-29 21:11:04 +00:00
Bob Wilson
f897b7b37e Improve isSafeToLoadUnconditionally to recognize that GEPs with constant
indices are safe if the result is known to be within the bounds of the
underlying object.

llvm-svn: 94829
2010-01-29 19:19:08 +00:00
Bill Wendling
d408e7be4e Assign the ordering of SDNodes in a much less intrusive fashion. After the
"visit*" method is called, take the newly created nodes, walk them in a DFS
fashion, and if they don't have an ordering set, then give it one.

llvm-svn: 94757
2010-01-28 21:51:40 +00:00
Douglas Gregor
1fcfb8e183 Add llvm::Program::ChangeStderrToBinary().
llvm-svn: 94743
2010-01-28 06:42:08 +00:00
Dan Gohman
4319402eb0 Make getAlignOf return an i64, for consistency with getSizeOf and
getOffsetOf, and remove the comment about assuming i8 is byte-aligned,
which is no longer applicable.

llvm-svn: 94738
2010-01-28 02:43:22 +00:00
Dan Gohman
1eb6920a2f Remove SCEVAllocSizeExpr and SCEVFieldOffsetExpr, and in their place
use plain SCEVUnknowns with ConstantExpr::getSizeOf and
ConstantExpr::getOffsetOf constants. This eliminates a bunch of
special-case code.

Also add code for pattern-matching these expressions, for clients that
want to recognize them.

Move ScalarEvolution's logic for expanding array and vector sizeof
expressions into an element count times the element size, to expose
the multiplication to subsequent folding, into the regular constant
folder.

llvm-svn: 94737
2010-01-28 02:15:55 +00:00
Chris Lattner
641dab84e4 add target hooks for emitting random gunk before and after the function body.
llvm-svn: 94732
2010-01-28 01:58:58 +00:00
Jim Grosbach
7474937004 Update of 94055 to track the IR level call site information via an intrinsic.
This allows code gen and the exception table writer to cooperate to make sure
landing pads are associated with the correct invoke locations.

llvm-svn: 94726
2010-01-28 01:45:32 +00:00
Chris Lattner
95118672e3 Give AsmPrinter the most common expected implementation of
runOnMachineFunction, and switch PPC to use EmitFunctionBody.
The two ppc asmprinters now don't heave to define 
runOnMachineFunction.

llvm-svn: 94722
2010-01-28 01:28:58 +00:00
Chris Lattner
8411a9084e Remove the argument from EmitJumpTableInfo, because it doesn't need it.
Move the X86 implementation of function body emission up to 
AsmPrinter::EmitFunctionBody, which works by calling the virtual
EmitInstruction method.

llvm-svn: 94716
2010-01-28 01:02:27 +00:00
Chris Lattner
6a127932c1 Drop the argument to AsmPrinter::EmitConstantPool and make it virtual.
Overload it in the ARM backend to do nothing, since is does insane
constant pool emission.

llvm-svn: 94708
2010-01-28 00:19:24 +00:00
Chris Lattner
de4b09beb9 rename printVisibility to EmitVisibility and make it private,
constify EmitLinkage.

llvm-svn: 94705
2010-01-28 00:05:10 +00:00
Chris Lattner
fad5ea4f89 add a helper function for bumping up the alignment of a machine function.
llvm-svn: 94700
2010-01-27 23:35:43 +00:00
Sean Callanan
d9a2a982fc Changed constants to an enum so as not to pollute the
global namespace needlessly.

llvm-svn: 94697
2010-01-27 23:20:51 +00:00
Sean Callanan
4325701296 Added a header file defining the externally-visible C API
for the LLVM disassemblers.

llvm-svn: 94696
2010-01-27 23:03:46 +00:00
Jeffrey Yasskin
fb10587e50 Kill ModuleProvider and ghost linkage by inverting the relationship between
Modules and ModuleProviders. Because the "ModuleProvider" simply materializes
GlobalValues now, and doesn't provide modules, it's renamed to
"GVMaterializer". Code that used to need a ModuleProvider to materialize
Functions can now materialize the Functions directly. Functions no longer use a
magic linkage to record that they're materializable; they simply ask the
GVMaterializer.

Because the C ABI must never change, we can't remove LLVMModuleProviderRef or
the functions that refer to it. Instead, because Module now exposes the same
functionality ModuleProvider used to, we store a Module* in any
LLVMModuleProviderRef and translate in the wrapper methods.  The bindings to
other languages still use the ModuleProvider concept.  It would probably be
worth some time to update them to follow the C++ more closely, but I don't
intend to do it.

Fixes http://llvm.org/PR5737 and http://llvm.org/PR5735.

llvm-svn: 94686
2010-01-27 20:34:15 +00:00
Benjamin Kramer
cfe07fadc7 Don't bother with sprintf, just pass the Twine through.
llvm-svn: 94684
2010-01-27 19:58:47 +00:00
Mikhail Glushenkov
5d02574734 Make SMDiagnostic::Print a const method.
llvm-svn: 94672
2010-01-27 10:13:28 +00:00
Mikhail Glushenkov
a5a618a417 Trailing whitespace.
llvm-svn: 94671
2010-01-27 10:13:11 +00:00
Chris Lattner
d20734ccba add a new AsmPrinter::EmitFunctionEntryLabel virtual function,
which allows targets to override function entry label emission.
Use it to convert linux/ppc to use EmitFunctionHeader().

llvm-svn: 94667
2010-01-27 07:21:55 +00:00
Evan Cheng
a5cb4213ac Remove a dead target hook.
llvm-svn: 94646
2010-01-27 01:44:40 +00:00
Evan Cheng
237629e476 Eliminate target hook IsEligibleForTailCallOptimization.
Target independent isel should always pass along the "tail call" property. Change
target hook LowerCall's parameter "isTailCall" into a refernce. If the target
decides it's impossible to honor the tail call request, it should set isTailCall
to false to make target independent isel happy.

llvm-svn: 94626
2010-01-27 00:07:07 +00:00
Chris Lattner
ae28b4785d pull linkage emission code out to a new EmitLinkage function.
llvm-svn: 94621
2010-01-26 23:47:12 +00:00
Chris Lattner
8fe5535cec remove a noop function.
llvm-svn: 94616
2010-01-26 23:26:29 +00:00
Jakob Stoklund Olesen
5d298fdb4c Fix inline cost predictions with SCIENCE.
After running a batch of measurements, it is clear that the inliner metrics
need some adjustments:

Own argument bonus:       20 -> 5
Outgoing argument penalty: 0 -> 5
Alloca bonus:             10 -> 5
Constant instr bonus:      7 -> 5
Dead successor bonus:     40 -> 5*(avg instrs/block)

The new cost metrics are generaly 25 points higher than before, so we may need
to move thresholds.

With this change, InlineConstants::CallPenalty becomes a political correction:

if (!isa<IntrinsicInst>(II) && !callIsSmall(CS.getCalledFunction()))
  NumInsts += InlineConstants::CallPenalty + CS.arg_size();

The code size is accurately modelled by CS.arg_size(). CallPenalty is added
because calls tend to take a long time, so it may not be worth it to inline a
function with lots of calls.

All of the political corrections are in the InlineConstants namespace:
IndirectCallBonus, CallPenalty, LastCallToStaticBonus, ColdccPenalty,
NoreturnPenalty.

llvm-svn: 94615
2010-01-26 23:21:56 +00:00
Chris Lattner
a0df0a28fa now that enough stuff is constified, move function header printing
logic up from X86 into the common code.  The other targets will 
hopefully start using this soon.

llvm-svn: 94614
2010-01-26 23:18:44 +00:00
Chris Lattner
7dbd5458b2 constify a bunch of dwarf stuff now that the registerinfo method
is constified.

llvm-svn: 94613
2010-01-26 23:18:02 +00:00
Chris Lattner
278075333e constify a method argument.
llvm-svn: 94612
2010-01-26 23:15:09 +00:00
Devang Patel
03be031c4c Before existing NamedMDNode entry in the symbol table, remove any existing entry with the same name.
llvm-svn: 94600
2010-01-26 22:03:41 +00:00
Devang Patel
81ca658dae Remve unnecessary include.
llvm-svn: 94594
2010-01-26 21:42:58 +00:00
Devang Patel
9e6549db1d Add extra element to composite type. This new element will be used to record c++ class that holds current class's vtable.
llvm-svn: 94586
2010-01-26 21:14:59 +00:00
Chris Lattner
325a36c358 Eliminate SetDirective, and replace it with HasSetDirective.
Default HasSetDirective to true, since most targets have it.

The targets that claim to not have it probably do, or it is
spelled differently. These include Blackfin, Mips, Alpha, and
PIC16.  All of these except pic16 are normal ELF targets, so
they almost certainly have it.

llvm-svn: 94585
2010-01-26 20:40:54 +00:00
Rafael Espindola
f46baf3304 Emit .comm alignment in bytes but .align in powers of 2 for ARM ELF.
Original patch by Sandeep Patel and updated by me.

llvm-svn: 94582
2010-01-26 20:21:43 +00:00
Chris Lattner
044439c9bc eliminate MCAsmInfo::NeedsSet: we now just use .set on any platform
that has it.

llvm-svn: 94581
2010-01-26 20:20:43 +00:00
Duncan Sands
3622f9d328 Tweak the way appendModuleInlineAsm works, so you aren't obliged
to append a newline when using setModuleInlineAsm in case later
someone calls appendModuleInlineAsm - make newline handling fully
automatic.  In case anyone is wondering there is only one user of
appendModuleInlineAsm: the dragonegg plugin.

llvm-svn: 94539
2010-01-26 11:58:04 +00:00
Torok Edwin
0ce6500bfd Regenerate configure.
With the previous cleanup to configure.ac, configure is now only 393k, instead of 1.1M!

llvm-svn: 94535
2010-01-26 08:50:50 +00:00
Bill Wendling
d4a402c2aa Remove warning about non return on a non-void function.
llvm-svn: 94532
2010-01-26 08:27:24 +00:00
Chris Lattner
967a37fb26 eliminate the TargetLowering::UsesGlobalOffsetTable bool, which is
subsumed by TargetLowering::getJumpTableEncoding().  Change uses of
it to be more specific.

llvm-svn: 94529
2010-01-26 06:53:37 +00:00
Chris Lattner
b711ded671 Now that printPICJumpTableSetLabel is not overloaded,
inline it into its only caller, allowing us to simplify it
and hoist bits out of the loop.

llvm-svn: 94528
2010-01-26 06:42:44 +00:00
Chris Lattner
d87c50833a Move getJTISymbol from MachineJumpTableInfo to MachineFunction,
which is more convenient, and change getPICJumpTableRelocBaseExpr
to take a MachineFunction to match.

Next, move the X86 code that create a PICBase symbol to
X86TargetLowering::getPICBaseSymbol from 
X86MCInstLower::GetPICBaseSymbol, which was an asmprinter specific 
library.  This eliminates a 'gross hack', and allows us to
implement X86ISelLowering::getPICJumpTableRelocBaseExpr which now
calls it.

This in turn allows us to eliminate the 
X86AsmPrinter::printPICJumpTableSetLabel method, which was the
only overload of printPICJumpTableSetLabel.

llvm-svn: 94526
2010-01-26 06:28:43 +00:00
Chris Lattner
a9b1ea03e9 add a new MachineJumpTableInfo::getJTISymbol method,
use it to implement the default TargetLowering::getPICJumpTableRelocBaseExpr

llvm-svn: 94523
2010-01-26 05:58:28 +00:00
Chris Lattner
3b2bf7ab66 stub out a new target hook, need some refactoring before I can
implement it.

llvm-svn: 94521
2010-01-26 05:30:30 +00:00
Chris Lattner
945bbf606f rename printPICJumpTableEntry -> EmitJumpTableEntry,
make it private and non-virtual.  It handles the non-pic
case too, so just use it, simplifying EmitJumpTableInfo.

llvm-svn: 94517
2010-01-26 05:10:10 +00:00
Chris Lattner
b4a5d00176 add a new MachineBasicBlock::getSymbol method, replacing
the AsmPrinter::GetMBBSymbol.

llvm-svn: 94515
2010-01-26 04:55:51 +00:00
Chris Lattner
d25ec1b3bd make MachineFunction keep track of its ID and make
MachineFunctionAnalysis dole them out, instead of having
AsmPrinter do both.  Have the AsmPrinter::SetupMachineFunction
method set the 'AsmPrinter::MF' variable.

llvm-svn: 94509
2010-01-26 04:35:26 +00:00
Chris Lattner
41f661d2c2 this hook should be const.
llvm-svn: 94508
2010-01-26 04:19:00 +00:00
Chris Lattner
5ee5b62838 Add support for target-specific 32-bit custom-lowered
jump table entries.

llvm-svn: 94505
2010-01-26 04:05:28 +00:00
Victor Hernandez
ab3ebb1a4a Add MDNode::getIfExists(), an efficient way to determine if a value is used by metadata (since metadata does not appear in a value's use list)
llvm-svn: 94492
2010-01-26 02:36:35 +00:00
Chris Lattner
efdc572e44 Rearrange handling of jump tables. Highlights:
1. MachineJumpTableInfo is now created lazily for a function the first time
   it actually makes a jump table instead of for every function.
2. The encoding of jump table entries is now described by the
   MachineJumpTableInfo::JTEntryKind enum.  This enum is determined by the
   TLI::getJumpTableEncoding() hook, instead of by lots of code scattered
   throughout the compiler that "knows" that jump table entries are always
   32-bits in pic mode (for example).
3. The size and alignment of jump table entries is now calculated based on
   their kind, instead of at machinefunction creation time.

Future work includes using the EntryKind in more places in the compiler,
eliminating other logic that "knows" the layout of jump tables in various
situations.

llvm-svn: 94470
2010-01-25 23:26:13 +00:00
Chris Lattner
00ba9a5343 add a method to get the alignment of an integer type even
when we don't have one laying around.  Useful if you don't
have an llvmcontext handy.

llvm-svn: 94468
2010-01-25 23:18:11 +00:00
Chris Lattner
1e05dd3446 eliminate redundant argument to EmitJumpTableInfo
llvm-svn: 94464
2010-01-25 22:41:33 +00:00
Chris Lattner
3559d9a38a mcstreamerize gprel32 emission.
llvm-svn: 94452
2010-01-25 21:28:50 +00:00
Chris Lattner
27d1a6fed5 handle the _set_ symbol with an MCSymbol.
llvm-svn: 94449
2010-01-25 21:17:10 +00:00
Chris Lattner
ac1144c110 rename MAI::PICJumpTableDirective to MAI::GPRel32Directive to
make it clear what it is, instead of how it is used.

llvm-svn: 94448
2010-01-25 21:10:10 +00:00
Chris Lattner
fafb52a75a remove JumpTableDirective, it is always null.
llvm-svn: 94445
2010-01-25 20:52:54 +00:00
Chris Lattner
1cd2ba1c3a sink an arm specific method out of asmprinter into the ARMAsmPrinter and
rename it to avoid shadowing.

llvm-svn: 94440
2010-01-25 19:39:52 +00:00
Chris Lattner
20d89c382c mcstreamerize .file and .file. This also fixes an issue where the
normal form of .file would fail if the filename had a weird character
in it.

llvm-svn: 94437
2010-01-25 18:58:59 +00:00
Chris Lattner
7a5c8c15bd add symbol attribute support for the ELF .type directive.
llvm-svn: 94435
2010-01-25 18:30:45 +00:00
Bob Wilson
1882fba746 Change Value::getUnderlyingObject to have the MaxLookup value specified as a
parameter with a default value, instead of just hardcoding it in the
implementation.  The limit of MaxLookup = 6 was introduced in r69151 to fix
a performance problem with O(n^2) behavior in instcombine, but the scalarrepl
pass is relying on getUnderlyingObject to go all the way back to an AllocaInst.
Making the limit part of the method signature makes it clear that by default
the result is limited and should help avoid similar problems in the future.
This fixes pr6126.

llvm-svn: 94433
2010-01-25 18:26:54 +00:00
Chris Lattner
9834b7f300 emit the .size directive for global variables on ELF through
mcstreamer.

llvm-svn: 94416
2010-01-25 07:52:13 +00:00
Chris Lattner
474395e815 all supported target now have aligned common support.
llvm-svn: 94413
2010-01-25 07:29:13 +00:00
Chris Lattner
91fafbd4e8 change the canonical form of "cond ? -1 : 0" to be
"sext cond" instead of a select.  This simplifies some instcombine
code, matches the policy for zext (cond ? 1 : 0 -> zext), and allows
us to generate better code for a testcase on ppc.

llvm-svn: 94339
2010-01-24 00:09:49 +00:00
Bill Wendling
7449bb010b Remove the '-disable-scheduling' flag and replace it with the 'source' option of
the '-pre-RA-sched' flag. It actually makes more sense to do it this way. Also,
keep track of the SDNode ordering by default. Eventually, we would like to make
this ordering a way to break a "tie" in the scheduler. However, doing that now
breaks the "CodeGen/X86/abi-isel.ll" test for 32-bit Linux.

llvm-svn: 94308
2010-01-23 10:26:57 +00:00
Chris Lattner
617e6fb889 mcize lcomm, simplify .comm, extend both to support 64-bit sizes.
llvm-svn: 94299
2010-01-23 07:47:02 +00:00
Chris Lattner
7e1fa376cc resolve a fixme: the "nonexecutable stack directive" is actually
a .section.  Switch to it with SwitchSection.

However, I think that this directive should be safe on any ELF target.
If so, we should hoist it up out of the X86 and SystemZ targets.

llvm-svn: 94298
2010-01-23 07:21:06 +00:00