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Author SHA1 Message Date
Rafael Espindola
db7319d272 Implement cfi_restore. Patch by Brian Anderson! 
llvm-svn: 147356
 2011-12-29 21:43:03 +00:00
Rafael Espindola
bc8c3d0ca0 Rename Remember and Restore to RememberState and RestoreState for consistency. 
llvm-svn: 147354
 2011-12-29 21:09:08 +00:00
Craig Topper
97e84c23a1 Fix execution domains for PS/PD FMA3 instructions. Add SS/SD forms o FMA3 instructions. 
llvm-svn: 147353
 2011-12-29 20:43:40 +00:00
Rafael Espindola
27298c6f33 Implement .cfi_escape. Patch by Brian Anderson! 
llvm-svn: 147352
 2011-12-29 20:24:47 +00:00
Craig Topper
bcfd070378 Expose FMA3 instructions to the disassembler. 
llvm-svn: 147351
 2011-12-29 20:03:14 +00:00
Craig Topper
9d664349d6 Make FMA3 imply AVX needs to be enabled. Particularly because 256-bit types aren't valid unless AVX is enabled. 
llvm-svn: 147349
 2011-12-29 19:46:19 +00:00
Craig Topper
21029d1f81 Change XOP detection to use the correct CPUID bit instead of using the FMA4 bit. 
llvm-svn: 147348
 2011-12-29 19:25:56 +00:00
Craig Topper
93d614dd3a Add FeaturePOPCNT to all CPU types that lost it was removed from SSE42/SSE4A in r147339. 
llvm-svn: 147347
 2011-12-29 18:47:31 +00:00
Craig Topper
ba73cefabb Mark non-VEX forms of PCLMUL instructions as requiring SSE2 to be enabled along with CLMUL. That's required for the XMM registers to be valid for integer data. Doesn't change any behavior since the CLMUL instructions don't have patterns yet. 
llvm-svn: 147345
 2011-12-29 18:08:36 +00:00
Craig Topper
63bb77ebe7 Mark non-VEX forms of AES instructions as requiring SSE2 to be enabled along with AES. Since that's required for the XMM registers to be valid for integer data. Doesn't change any behavior though since you can't use an intrinsic with an illegal type anyway. Just makes it consistent with the VEX forms. 
llvm-svn: 147344
 2011-12-29 18:00:08 +00:00
Craig Topper
04b3b369de Remove the separate explicit AES instruction patterns. They are equivalent to the patterns specified by the instructions. Also remove unnecessary bitconverts from the AES patterns. 
llvm-svn: 147342
 2011-12-29 17:41:56 +00:00
Craig Topper
3ff20898e9 Make SSE42 and SSE4A not imply POPCNT. POPCNT should be able to be disabled on its own without disabling SSE4.2 or SSE4A. 
llvm-svn: 147339
 2011-12-29 15:51:45 +00:00
Craig Topper
0ff84d82cc Make LowerBUILD_VECTOR keep node vector types consistent when creating MOVL for v16i16 and v32i8. 
llvm-svn: 147337
 2011-12-29 03:34:54 +00:00
Craig Topper
cb884f28d9 Remove some elses after returns. 
llvm-svn: 147336
 2011-12-29 03:20:51 +00:00
Craig Topper
4cbe88ceba Remove trailing spaces. Fix an assert to use && instead of || before string. Add same assert on similar code path. 
llvm-svn: 147335
 2011-12-29 03:09:33 +00:00
Rafael Espindola
1935193ab7 Fix grammar error noticed by Duncan. 
llvm-svn: 147333
 2011-12-29 02:15:06 +00:00
Nick Lewycky
7425820374 Change CaptureTracking to pass a Use* instead of a Value* when a value is 
captured. This allows the tracker to look at the specific use, which may be
especially interesting for function calls.

Use this to fix 'nocapture' deduction in FunctionAttrs. The existing one does
not iterate until a fixpoint and does not guarantee that it produces the same
result regardless of iteration order. The new implementation builds up a graph
of how arguments are passed from function to function, and uses a bottom-up walk
on the argument-SCCs to assign nocapture. This gets us nocapture more often, and
does so rather efficiently and independent of iteration order.

llvm-svn: 147327
 2011-12-28 23:24:21 +00:00
Eli Friedman
db54b4b68f Fix type-checking for load transformation which is not legal on floating-point types. PR11674. 
llvm-svn: 147323
 2011-12-28 21:24:44 +00:00
Bob Wilson
152a507523 Update OCaml bindings for the new half float type. 
Patch by Jonathan Ragan-Kelley!

llvm-svn: 147314
 2011-12-28 18:51:08 +00:00
Rafael Espindola
510f9d49fb Add support for mipsel in configure. Fixes PR11669. Patch by Sylvestre Ledru. 
llvm-svn: 147312
 2011-12-28 17:08:00 +00:00
Nadav Rotem
d8c4880903 PR11662. 
Promotion of the mask operand needs to be done using PromoteTargetBoolean, and not padded with garbage.

llvm-svn: 147309
 2011-12-28 13:08:20 +00:00
Elena Demikhovsky
9b4613ff14 Fixed a bug in LowerVECTOR_SHUFFLE and LowerBUILD_VECTOR. 
Matching MOVLP mask for AVX (265-bit vectors) was wrong.
The failure was detected by conformance tests.

llvm-svn: 147308
 2011-12-28 08:14:01 +00:00
Nick Lewycky
17d4e8dae6 Demystify this comment. 
llvm-svn: 147307
 2011-12-28 06:57:32 +00:00
Rafael Espindola
2ecba45e58 PR11642 has been fixed, enable -fvisibility-inlines-hidden everywhere. 
llvm-svn: 147296
 2011-12-27 21:37:11 +00:00
Benjamin Kramer
77f9c9f719 Switch StringMap from an array of structures to a structure of arrays. 
- -25% memory usage of the main table on x86_64 (was wasted in struct padding).
- no significant performance change.

llvm-svn: 147294
 2011-12-27 20:35:07 +00:00
Nick Lewycky
4c5662bae0 Use false not zero, as a bool. 
llvm-svn: 147292
 2011-12-27 18:27:22 +00:00
Nick Lewycky
f4c21901a3 Turn cos(-x) into cos(x). Patch by Alexander Malyshev! 
llvm-svn: 147291
 2011-12-27 18:25:50 +00:00
Benjamin Kramer
c64fcf4a95 Clean up some Release build warnings. 
llvm-svn: 147289
 2011-12-27 11:41:05 +00:00
Craig Topper
9c07745da9 Add handling of x86_avx2_pmovmskb to computeMaskedBitsForTargetNode for consistency. Add comments and an assert for BMI instructions to PerformXorCombine since the enabling of the combine is conditional on it, but the function itself isn't. 
llvm-svn: 147287
 2011-12-27 06:27:23 +00:00
Nick Lewycky
295e397220 Teach simplifycfg to recompute branch weights when merging some branches, and 
to discard weights when appropriate. Still more to do (and a new TODO), but
it's a start!

llvm-svn: 147286
 2011-12-27 04:31:52 +00:00
Nick Lewycky
b3f57c8028 Using Inst->setMetadata(..., NULL) should be safe to remove metadata even when 
there is non of that type to remove. This fixes a crasher in the particular
case where the instruction has metadata but no metadata storage in the context
(this is only possible if the instruction has !dbg but no other metadata info).

llvm-svn: 147285
 2011-12-27 01:17:40 +00:00
Rafael Espindola
d448dfaa25 Fix warning. 
llvm-svn: 147284
 2011-12-26 23:12:42 +00:00
Eli Friedman
064187912e Make sure DAGCombiner doesn't introduce multiple loads from the same memory location. PR10747, part 2. 
llvm-svn: 147283
 2011-12-26 22:49:32 +00:00
Nick Lewycky
56e04db381 Update the branch weight metadata when reversing the order of a branch. 
llvm-svn: 147280
 2011-12-26 20:54:14 +00:00
Nick Lewycky
80b1ea7ea3 Sort includes, canonicalize whitespace, fix typos. No functionality change. 
llvm-svn: 147279
 2011-12-26 20:37:40 +00:00
Nadav Rotem
7898dcf3bb Update the LangRef documentation: the codegen does support this instruction. 
llvm-svn: 147274
 2011-12-25 21:32:35 +00:00
Nadav Rotem
d0f22ebb10 Fix a typo in the widening of vectors in PromoteIntRes. Patch by Shemer Anat. 
llvm-svn: 147272
 2011-12-25 20:01:38 +00:00
Venkatraman Govindaraju
d9c90c9fa5 Sparc: Implement emitFrameIndexDebugValue and getDebugValue Location hooks. 
llvm-svn: 147269
 2011-12-25 18:50:24 +00:00
Bill Wendling
82ca4569b9 Add braces to remove silly warning. 
llvm-svn: 147264
 2011-12-25 06:56:22 +00:00
Rafael Espindola
b598485fb9 Remove unused variables. 
llvm-svn: 147261
 2011-12-25 01:20:19 +00:00
Chandler Carruth
a012c64ced Add an explicit test that we now fold cttz.i32(..., true) >> 5 -> 0. 
This is a result of Benjamin's work on ValueTracking.

llvm-svn: 147259
 2011-12-24 22:34:15 +00:00
Benjamin Kramer
94f07f8c2c InstCombine: Add a combine that turns (2^n)-1 ^ x back into (2^n)-1 - x iff x is smaller than 2^n and it fuses with a following add. 
This was intended to undo the sub canonicalization in cases where it's not profitable, but it also
finds some cases on it's own.

llvm-svn: 147256
 2011-12-24 17:31:53 +00:00
Benjamin Kramer
b5e584392b ComputeMaskedBits: Make knownzero computation more aggressive for ctlz with undef zero. 
unsigned foo(unsigned x) { return 31 - __builtin_clz(x); }
now compiles into a single "bsrl" instruction on x86.

llvm-svn: 147255
 2011-12-24 17:31:46 +00:00
Benjamin Kramer
0b4d2e3d2a InstCombine: Canonicalize (2^n)-1 - x into (2^n)-1 ^ x iff x is known to be smaller than 2^n. 
This has the obvious advantage of being commutable and is always a win on x86 because
const - x wastes a register there. On less weird architectures this may lead to
a regression because other arithmetic doesn't fuse with it anymore. I'll address that
problem in a followup.

llvm-svn: 147254
 2011-12-24 17:31:38 +00:00
Rafael Espindola
504588a7a3 Section relative fixups are a coff concept, not a x86 one. Replace the 
x86 specific reloc_coff_secrel32 with a generic FK_SecRel_4.

llvm-svn: 147252
 2011-12-24 14:47:52 +00:00
Chandler Carruth
7a5c52fadf Use standard promotion for i8 CTTZ nodes and i8 CTLZ nodes when the 
LZCNT instructions are available. Force promotion to i32 to get
a smaller encoding since the fix-ups necessary are just as complex for
either promoted type

We can't do standard promotion for CTLZ when lowering through BSR
because it results in poor code surrounding the 'xor' at the end of this
instruction. Essentially, if we promote the entire CTLZ node to i32, we
end up doing the xor on a 32-bit CTLZ implementation, and then
subtracting appropriately to get back to an i8 value. Instead, our
custom logic just uses the knowledge of the incoming size to compute
a perfect xor. I'd love to know of a way to fix this, but so far I'm
drawing a blank. I suspect the legalizer could be more clever and/or it
could collude with the DAG combiner, but how... ;]

llvm-svn: 147251
 2011-12-24 12:12:34 +00:00
Chandler Carruth
82b7a7478b Add systematic testing for cttz as well, and fix the bug I spotted by 
inspection earlier.

llvm-svn: 147250
 2011-12-24 11:46:10 +00:00
Chandler Carruth
b52ba33d0a Add i8 and i64 testing for ctlz on x86. Also simplify the i16 test. 
llvm-svn: 147249
 2011-12-24 11:26:59 +00:00
Chandler Carruth
800a803717 Tidy up this rather crufty test. Put the declarations at the top to make 
my C-brain happy. Remove the unnecessary bits of pedantic IR fluff like
nounwind. Remove stray uses comments. Name things semantically rather
than tN so that adding a new test in the middle doesn't cause pain, and
so that new tests can be grouped semantically.

This exposes how little systematic testing is going on here. I noticed
this by finding several bugs via inspection and wondering why this test
wasn't catching any of them. =[

llvm-svn: 147248
 2011-12-24 11:26:57 +00:00
Benjamin Kramer
facca1025b Chandler fixed this. 
llvm-svn: 147247
 2011-12-24 11:23:32 +00:00