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Author SHA1 Message Date
Chris Lattner
994155dc91 Fix rdar://7879828 - crash in CallGraph, a self host issue. 
Arg promotion was deleting call graph nodes that still had references
from the 'indirect' CGN.  Like the inliner, it should only delete the
function if all references are gone.

llvm-svn: 101845
 2010-04-20 00:46:50 +00:00
Dan Gohman
c64745ba43 Remove MachineFunction's DefaultDebugLoc member, and make DwarfDebug.cpp 
responsible for figuring out what that's supposed to be on its own.

llvm-svn: 101844
 2010-04-20 00:37:27 +00:00
Dan Gohman
1d05054dc1 Reapply the removal of SelectionDAGISel's BB, with a fix for the case 
where multiple blocks are emitted; functions which do this need to return
the new BB so that their callers can stay current.

llvm-svn: 101843
 2010-04-20 00:29:35 +00:00
Johnny Chen
1b36569ba8 More IT instruction error-handling improvements from fuzzing. 
llvm-svn: 101839
 2010-04-20 00:15:41 +00:00
Dan Gohman
744e2b34b0 Revert 101825, which is causing trouble. 
llvm-svn: 101832
 2010-04-19 23:34:15 +00:00
Dan Gohman
60e18d1d07 Make BreakAntiDependencies' SUnits argument const, and make the Begin 
and End arguments by-value rather than by-reference.

llvm-svn: 101830
 2010-04-19 23:11:58 +00:00
Johnny Chen
2d0dca9099 Better error handling of invalid IT mask '0000', instead of just asserting. 
llvm-svn: 101827
 2010-04-19 23:02:58 +00:00
Dan Gohman
94383f9d34 Eliminate SelectionDAGISel's "current block" member. Just pass it as 
an argument to things that need it.

llvm-svn: 101825
 2010-04-19 22:51:14 +00:00
Dan Gohman
45789ce594 Delete an unnecessary reference to SelectionDAGISel::BB. 
llvm-svn: 101824
 2010-04-19 22:48:45 +00:00
Dan Gohman
b02e2f6c92 Eliminate the CurMBB member from SelectionDAGBuilder. For places that 
need it, just pass around the parent block of the current instruction
explicitly.

llvm-svn: 101822
 2010-04-19 22:41:47 +00:00
Dan Gohman
e52396cb52 Remove the Expr member from IVUsers. Instead of remembering the expression, 
just ask ScalarEvolution for it on demand. This helps IVUsers be more robust
in the case of expressions changing underneath it. This fixes PR6862.

llvm-svn: 101819
 2010-04-19 21:48:58 +00:00
Johnny Chen
fe24cdbba8 According to A8.6.16 B (Encoding T3) and A8.3 Conditional execution -- A8.3.1 
Pseudocode details of conditional, Condition bits '111x' indicate the
instruction is always executed.  That is, '1111' is a leagl condition field
value, which is now mapped to ARMCC::AL.

Also add a test case for condition field '1111'.

llvm-svn: 101817
 2010-04-19 21:19:52 +00:00
Devang Patel
2a21d92744 Fix typo. add a test case. 
llvm-svn: 101812
 2010-04-19 20:31:39 +00:00
Evan Cheng
8efe9e0351 More progress on promoting i16 operations to i32 for x86. Work in progress. 
llvm-svn: 101808
 2010-04-19 19:29:22 +00:00
Dan Gohman
6bcd9dabb7 Give SelectionDAG a TargetMachine too, rather than having it 
fetch one from the MachineFunction.

llvm-svn: 101807
 2010-04-19 19:22:07 +00:00
Evan Cheng
d65a23c1e6 More 80 col violation. 
llvm-svn: 101806
 2010-04-19 19:17:44 +00:00
Devang Patel
06123c1012 Add DW_AT_APPLE_omit_frame_ptr to encode -fomit-frame-pointer flag. 
llvm-svn: 101805
 2010-04-19 19:14:02 +00:00
Dan Gohman
f1f21fb3c6 Code that needs a TargetMachine should have access to one directly, rather 
than just getting one through a TargetLowering.

llvm-svn: 101802
 2010-04-19 19:05:59 +00:00
Dan Gohman
3c58144bfd Move isInTailCallPosition out of SelectionDAGBuilder, as it isn't 
SelectionDAG-specific.

llvm-svn: 101801
 2010-04-19 18:41:46 +00:00
Dan Gohman
caa827af2c This doesn't need SmallVector.h anymore. 
llvm-svn: 101790
 2010-04-19 17:51:31 +00:00
Johnny Chen
b386de1758 Better error-handling for DisassembleThumb2DPSoReg() where the 3-reg operand 
instructions should have Rd (Inst{11-8}) != 0b1111.

Ref: A6.3 32-bit Thumb instruction encoding
     A6.3.11 Data-processing (shifted register)
llvm-svn: 101788
 2010-04-19 17:16:40 +00:00
Dan Gohman
ede59ecfbb Fix this for std::vectors which don't have .data(). 
llvm-svn: 101785
 2010-04-19 16:33:28 +00:00
Johnny Chen
091c01cb2f ARM disassembler did not react to recent changes to the NEON instruction table. 
VLD1q*_UPD and VST1q*_UPD have the ${dst:dregpair} operand now.

llvm-svn: 101784
 2010-04-19 16:20:34 +00:00
Benjamin Kramer
96b4f6c003 Don't write into MemoryBuffers. 
llvm-svn: 101783
 2010-04-19 16:15:31 +00:00
Dan Gohman
e2e1b9063a Fix -Wcast-qual warnings. 
llvm-svn: 101782
 2010-04-19 15:55:10 +00:00
Dan Gohman
735c177251 Revert 91528 and use a std::vector instead, fixing an abuse of std::string. 
llvm-svn: 101781
 2010-04-19 15:54:44 +00:00
Dan Gohman
f2998652a8 Fix -Wcast-qual warnings. 
llvm-svn: 101779
 2010-04-19 15:42:05 +00:00
Anton Korobeynikov
dc153b7539 Add missed part of prev. commit 
llvm-svn: 101755
 2010-04-18 20:41:42 +00:00
Anton Korobeynikov
e325c693a5 Make processor FUs unique for given itinerary. This extends the limit of 32 
FU per CPU arch to 32 per intinerary allowing precise modelling of quite
complex pipelines in the future.

llvm-svn: 101754
 2010-04-18 20:31:01 +00:00
Chris Lattner
746abd86e7 avoid temporary std::string in non posix_spawn path. 
llvm-svn: 101723
 2010-04-18 17:34:10 +00:00
Benjamin Kramer
2cade0b3ff Eliminate temporary string. 
llvm-svn: 101711
 2010-04-18 09:19:41 +00:00
Benjamin Kramer
6f6354213f Properly inherit the environment on darwin where environ is not available for shared libraries. 
llvm-svn: 101710
 2010-04-18 09:16:04 +00:00
Nick Lewycky
152b2bc046 This is horrible. Split the difference, and declare 'environ' on all non-Darwin 
platforms to unbreak the darwin and linux builds. The BSD folks should feel
free to change the #if, if this breaks them.

llvm-svn: 101703
 2010-04-18 07:07:48 +00:00
Nick Lewycky
459afe3cce Revert r101701, Darwin doesn't have 'environ'. Go figure. 
llvm-svn: 101702
 2010-04-18 06:44:21 +00:00
Nick Lewycky
2b694c49bb Fix linux build. posix_spawn doesn't inherit the environment by default. 
llvm-svn: 101701
 2010-04-18 06:22:26 +00:00
Chris Lattner
22b58ac393 make Program::Execute use posix_spawn on systems that support it, 
as it is more efficient than fork/exec.

Thanks to Eric for adding the autoconf check.  It would be nice if
a cmake guru could add a cmake check for posix_spawn as well.

llvm-svn: 101693
 2010-04-18 04:14:37 +00:00
Chris Lattner
f543d5e029 reduce indentation 
llvm-svn: 101692
 2010-04-18 03:35:23 +00:00
Chris Lattner
49c39866b3 unnest from namespace. 
llvm-svn: 101691
 2010-04-18 03:33:55 +00:00
Bill Wendling
3592f4fac4 Don't rely upon the MCSymbol "isDefined" method to indicate if a label has been 
emitted or not. The JIT doesn't set that. Look it up in the label location table
instead.

llvm-svn: 101686
 2010-04-18 00:56:05 +00:00
Bill Wendling
19aefaac85 Formatting changes. No functionality change. 
llvm-svn: 101685
 2010-04-18 00:52:08 +00:00
Daniel Dunbar
0cfafd5b8f Revert "reject forward references to functions whose type don't match", because DJG told me to! 
llvm-svn: 101675
 2010-04-17 21:24:55 +00:00
Chris Lattner
8028c98fe2 reject forward references to functions whose type don't match 
up with the definition (and fix a broken testcase).  PR6491.

llvm-svn: 101670
 2010-04-17 20:45:56 +00:00
Chris Lattner
99d17acb35 fix PR6332, allowing an index of zero into a zero sized array 
even if the element of the array has no size.

llvm-svn: 101662
 2010-04-17 19:02:33 +00:00
Chris Lattner
65d1e40895 teach the x86 asm parser how to handle segment prefixes 
in memory operands.  rdar://7874844

llvm-svn: 101661
 2010-04-17 18:56:34 +00:00
Chris Lattner
a5798151a3 refactor .if handling code a bit. 
llvm-svn: 101659
 2010-04-17 18:14:27 +00:00
Chris Lattner
a5eb6419eb fix PR6858: a dangling pointer use bug which was caused 
by switching CachedFunctionInfo from a std::map to a 
ValueMap (which is implemented in terms of a DenseMap).

DenseMap has different iterator invalidation semantics
than std::map.

This should hopefully fix the dragonegg builder.

llvm-svn: 101658
 2010-04-17 17:57:56 +00:00
Chris Lattner
d506ae2617 a bunch of cleanups and tweaks, no functionality changes. 
llvm-svn: 101657
 2010-04-17 17:55:00 +00:00
Dan Gohman
fba34ef042 Fix -Wcast-qual warnings. 
llvm-svn: 101655
 2010-04-17 17:42:52 +00:00
Chris Lattner
99878c7ca4 remove a dead variable, PR6856 
llvm-svn: 101648
 2010-04-17 17:28:00 +00:00
Dan Gohman
3dde4fe35f Add const qualifiers to TargetLoweringObjectFile usage. 
llvm-svn: 101640
 2010-04-17 16:44:48 +00:00
Dan Gohman
b5109cda0e Use const_cast instead of a C-style cast to cast away const. 
llvm-svn: 101639
 2010-04-17 16:43:55 +00:00
Dan Gohman
5736cd1e47 Start function numbering at 0. 
llvm-svn: 101638
 2010-04-17 16:29:15 +00:00
Dan Gohman
6065ff317b Delete now-unnecessary const_casts. 
llvm-svn: 101637
 2010-04-17 15:32:28 +00:00
Dan Gohman
87af9f6bf4 Use cast instead of dyn_cast when assuming success. 
llvm-svn: 101636
 2010-04-17 15:31:16 +00:00
Dan Gohman
a0f855157e Use const qualifiers with TargetLowering. This eliminates several 
const_casts, and it reinforces the design of the Target classes being
immutable.

SelectionDAGISel::IsLegalToFold is now a static member function, because
PIC16 uses it in an unconventional way. There is more room for API
cleanup here.

And PIC16's AsmPrinter no longer uses TargetLowering.

llvm-svn: 101635
 2010-04-17 15:26:15 +00:00
Dan Gohman
5c8db5ab3f Move per-function state out of TargetLowering subclasses and into 
MachineFunctionInfo subclasses.

llvm-svn: 101634
 2010-04-17 14:41:14 +00:00
Chandler Carruth
c03e85229d Name these stub files consistently with the SPU and PPC targets' conventions. 
Also rename the classes appropriately. The CMake build already used these
names.

llvm-svn: 101631
 2010-04-17 08:50:29 +00:00
Chris Lattner
42337931b2 a bunch of ssse3 instructions are misencoded to think they have an 
i8 field when they really do not.  This fixes rdar://7840289

llvm-svn: 101629
 2010-04-17 07:38:24 +00:00
Chris Lattner
bef627e798 reenable r101565, removing a problematic assertion. 
CGSCC can delete nodes in regions of the callgraph that
have already been visited.  If new CG nodes are allocated
to the same pointer, we shouldn't abort, just handle it
correctly by assigning a new number.  This should restore
stability by removing invalidated pointers that *will* be
reused from the densemap in the iterator.

llvm-svn: 101628
 2010-04-17 07:17:19 +00:00
Evan Cheng
0004496a98 Postra machine licm must add registers defined by loop invariants to *all* of 
the live-in sets of BBs in the loop. Otherwise later pass may end up using the
registers and override the invariant. rdar://7852937
No reasonablly sized test case possible.

llvm-svn: 101626
 2010-04-17 07:07:11 +00:00
Evan Cheng
81f543c005 Fix codegen passes. -disable-ssc shouldn't disable postra machine licm. 
llvm-svn: 101622
 2010-04-17 06:47:47 +00:00
Evan Cheng
6442d111dd More work to allow dag combiner to promote 16-bit ops to 32-bit. 
llvm-svn: 101621
 2010-04-17 06:13:15 +00:00
Evan Cheng
aa2f3449c4 Another 80 col violation. 
llvm-svn: 101620
 2010-04-17 06:12:32 +00:00
Bob Wilson
7e53f886d2 Revise my previous change to ExpandBIT_CONVERT. I hadn't realized that this 
may be called when either the source or destination type is i64, and my
change also hadn't fixed the most obvious problem -- assuming that i64 will
only be bitconverted to f64, ignoring the various vector types.
Radar 7873160.

llvm-svn: 101615
 2010-04-17 05:30:19 +00:00
Bob Wilson
ad00f21093 Re-commit my previous SSAUpdater changes. The previous version naively tried 
to determine where to place PHIs by iteratively comparing reaching definitions
at each block.  That was just plain wrong.  This version now computes the
dominator tree within the subset of the CFG where PHIs may need to be placed,
and then places the PHIs in the iterated dominance frontier of each definition.
The rest of the patch is mostly the same, with a few more performance
improvements added in.

llvm-svn: 101612
 2010-04-17 03:08:24 +00:00
Bob Wilson
01b8b8ef7d As a temporary workaround for post-RA not handling DebugValue instructions, 
just remove them all.  Radar 7873207 (working around the root problem of
Radar 7759363).

llvm-svn: 101604
 2010-04-17 00:49:11 +00:00
Jakob Stoklund Olesen
2f0fbb4587 Revert "Use a simpler data structure to calculate the least recently used register in RegAllocLocal." 
This reverts commit 101392. It broke a buildbot.

llvm-svn: 101595
 2010-04-17 00:38:36 +00:00
Chris Lattner
36a76e4185 disable r101565: an assert is getting triggered. More lurking badness no doubt. 
llvm-svn: 101583
 2010-04-17 00:05:36 +00:00
Chris Lattner
136547652d add a note 
llvm-svn: 101581
 2010-04-16 23:52:30 +00:00
Eric Christopher
e78496e5f1 Revert 101465, it broke internal OpenGL testing. 
Probably the best way to know that all getOperand() calls have been handled
is to replace that API instead of updating.

llvm-svn: 101579
 2010-04-16 23:37:20 +00:00
Devang Patel
1929d78e71 Add support to emit dwarf ranges. 
llvm-svn: 101575
 2010-04-16 23:33:45 +00:00
Jakob Stoklund Olesen
51248b6cb4 Use a simpler data structure to calculate the least recently used register in RegAllocLocal. 
This makes the local register allocator about 20% faster.

llvm-svn: 101574
 2010-04-16 23:32:37 +00:00
Johnny Chen
8de98d4036 Cast to (uint64_t) instead of relying on the "ul" suffix. 
llvm-svn: 101573
 2010-04-16 23:30:28 +00:00
Chris Lattner
d28dcb3ffe building on the new CallGraphSCC abstraction, teach CallGraphSCCPassManager 
to keep the node entries in scc_iterator up to date instead of dangling as
the SCC mutates.

This is a really terrible problem which was causing -g to affect codegen 
because it would permute the memory image of the compiler process.

Thanks to Dale for expertly hunting it down.

llvm-svn: 101565
 2010-04-16 23:04:30 +00:00
Dan Gohman
982923742d Add skeleton target-specific SelectionDAGInfo files. 
llvm-svn: 101564
 2010-04-16 23:04:22 +00:00
Johnny Chen
2b1390e9bc Fixed logic error. Should check Builder for validity before calling SetSession 
on it.

llvm-svn: 101563
 2010-04-16 23:02:25 +00:00
Chris Lattner
a9a7c28cd2 move ReplaceNode out of line, rename scc_iterator::fini -> isAtEnd(). 
No functionality change.

llvm-svn: 101562
 2010-04-16 22:59:24 +00:00
Chris Lattner
6a038be777 introduce a new CallGraphSCC class, and pass it around 
to CallGraphSCCPass's instead of passing around a
std::vector<CallGraphNode*>.  No functionality change,
but now we have a much tidier interface.

llvm-svn: 101558
 2010-04-16 22:42:17 +00:00
Johnny Chen
44087236da Fixed a bug in DisassembleN1RegModImmFrm() where a break stmt was missing for a 
case.  Also, the 0xFF hex literal involved in the shift for ESize64 should be
suffixed "ul" to preserve the shift result.

Implemented printHex*ImmOperand() by copying from ARMAsmPrinter.cpp and added a
test case for DisassembleN1RegModImmFrm()/printHex64ImmOperand().

llvm-svn: 101557
 2010-04-16 22:40:20 +00:00
Evan Cheng
b55929892f (i32 sext_in_reg (i32 aext (i16 x)), i16) -> (i32 sext x). No known test case until -promote-16bit is enabled. 
llvm-svn: 101551
 2010-04-16 22:26:19 +00:00
Chris Lattner
5d6a95d587 move PrintCallGraphPass out of the middle of CGPassManager. 
llvm-svn: 101543
 2010-04-16 21:43:55 +00:00
Chris Lattner
4671fb68c5 add a missing break back, patch by Nico Schmidt! 
llvm-svn: 101538
 2010-04-16 21:15:15 +00:00
Dan Gohman
b3afc2a215 Create a new TargetSelectionDAGInfo class. This will eventually acquire 
SelectionDAG-specific parts of TargetLowering.

llvm-svn: 101537
 2010-04-16 21:12:11 +00:00
Dan Gohman
2912cb780f Commit this, which should have accompanied 101531. 
llvm-svn: 101532
 2010-04-16 20:22:43 +00:00
Dan Gohman
1119e6060b Eliminate an unnecessary SelectionDAG dependency in getOptimalMemOpType. 
llvm-svn: 101531
 2010-04-16 20:11:05 +00:00
Johnny Chen
7ac96eac03 In the same spirit of r101524, which removed the assert() from printAddrMode2OffsetOperand(), 
this patch removes the assert() from printAddrMode3OffsetOperand() and adds a test case.

llvm-svn: 101529
 2010-04-16 19:57:21 +00:00
Johnny Chen
3cc0200f74 Multiclass LdStCop was using pre-UAL syntax LDC<c>L for the L fragment. Changed 
to the UAL syntax of LDCL<c>, instead.

Add a test case for this change which also tests the removal of assert() from
printAddrMode2OffsetOperand().

llvm-svn: 101527
 2010-04-16 19:33:23 +00:00
Johnny Chen
3a03b36cd0 Remove the assert() from printAddrMode2OffsetOperand(). "#0 and #-0" are 
considered legal instructions.

Refs: A8.6.51 LDC, LDC2 (immediate) -- page A8-107, A8.6.58 LDR (immediate, ARM)
-- page A8-121, and A8.6.194 STR (immediate, ARM) -- page A8-395.

llvm-svn: 101524
 2010-04-16 19:10:52 +00:00
Evan Cheng
80afc6964c 80 col. 
llvm-svn: 101501
 2010-04-16 17:58:41 +00:00
Evan Cheng
e541446e11 80 col. 
llvm-svn: 101500
 2010-04-16 17:57:59 +00:00
Dan Gohman
e9683c52da Avoid creating virtual registers for unused values. 
llvm-svn: 101480
 2010-04-16 17:15:02 +00:00
Dan Gohman
30de6c2b1c Fix an assertion string. 
llvm-svn: 101478
 2010-04-16 16:55:18 +00:00
Dan Gohman
cb1d4ed9d0 Fix a comment. 
llvm-svn: 101477
 2010-04-16 16:52:37 +00:00
Dan Gohman
58add81e7d Disable inlining of recursive calls. It can complicate tailcallelim and 
dependent analyses, and increase code size, so doing it profitably would
require more complex heuristics.

llvm-svn: 101471
 2010-04-16 16:01:18 +00:00
Dan Gohman
f0457a82fa Refine the detection of seemingly infinitely recursive calls where the 
callee is expected to be expanded to something else by codegen, so that
normal infinitely recursive calls are still transformed.

llvm-svn: 101468
 2010-04-16 15:57:50 +00:00
Gabor Greif
e7d6812008 reapply r101434 
with a fix for self-hosting

rotate CallInst operands, i.e. move callee to the back
of the operand array

the motivation for this patch are laid out in my mail to llvm-commits:
more efficient access to operands and callee, faster callgraph-construction,
smaller compiler binary

llvm-svn: 101465
 2010-04-16 15:33:14 +00:00
Dan Gohman
f754ff8ee9 Make callIsSmall accessible as a utility function. 
llvm-svn: 101463
 2010-04-16 15:14:50 +00:00
Dan Gohman
2d575a91e0 Fix SCEVCommutativeExpr::print to be robust in the case of improper 
expression canonicalization. Its job is to print what's there, not to
make judgements about it.

llvm-svn: 101461
 2010-04-16 15:03:25 +00:00
Bill Wendling
7ede9396f4 The JIT calls TidyLandingPads to tidy up the landing pads. However, because the 
JIT doesn't use the MC back-end asm printer to emit labels that it uses, the
section for the MCSymbol is never set. And thus the MCSymbol for the EH label
isn't marked as "defined". Because of that, TidyLandingPads removes the needed
landing pads from the JIT output. This breaks EH for every JIT program.

This is a work-around for this limitation. We pass in the label locations
map. If the label has a non-zero value, then it was "emitted" by the JIT and
TidyLandingPads shouldn't remove that label.

A nicer solution would be to mark the MCSymbol as "used" by the JIT and not rely
upon the section being set to determine if it's defined or not.

llvm-svn: 101453
 2010-04-16 08:46:10 +00:00
Evan Cheng
d143bfe0a4 Adding support for dag combiner to promote operations for profit. This requires target specific queries. For example, x86 should promote i16 to i32 when it does not impact load folding. 
x86 support is off by default. It can be enabled with -promote-16bit.

Work in progress.

llvm-svn: 101448
 2010-04-16 06:14:10 +00:00