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8985140f3e
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11150 Commits

Author SHA1 Message Date
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