Commit Graph

17938 Commits

Author SHA1 Message Date
Jakob Stoklund Olesen 725d57682b Fix PR14732 by handling all kinds of IMPLICIT_DEF live ranges.
Most IMPLICIT_DEF instructions are removed by the ProcessImplicitDefs
pass, and a few are reinserted by PHIElimination when a PHI argument is
<undef>.

RegisterCoalescer was assuming that all IMPLICIT_DEF live ranges look
like those created by PHIElimination, and that their live range never
leaves the basic block.

The PR14732 test case does tricks with PHI nodes that causes a longer
IMPLICIT_DEF live range to appear. This happens very rarely, but
RegisterCoalescer should be able to handle it.

llvm-svn: 171435
2013-01-03 00:47:51 +00:00
Nadav Rotem 4897392360 Avoid vectorization when the function has the "noimplicitflot" attribute.
llvm-svn: 171429
2013-01-02 23:54:43 +00:00
Eric Christopher da4b2195fc Extend the dumping infrastructure to deal with additional
sections for debug info. These are some of the dwo sections from the
DWARF5 split debug info proposal. Update the fission-cu.ll testcase
to show what we should be able to dump more of now.

Work in progress: Ultimately the relocations will be gone for the
dwo section and the strings will be a different form (as well as
the rest of the sections will be included).

llvm-svn: 171428
2013-01-02 23:52:13 +00:00
Tom Stellard 567f886eb0 DAGCombiner: Avoid generating illegal vector INT_TO_FP nodes
DAGCombiner::reduceBuildVecConvertToConvertBuildVec() was making two
mistakes:

1. It was checking the legality of scalar INT_TO_FP nodes and then generating
vector nodes.

2. It was passing the result value type to
TargetLoweringInfo::getOperationAction() when it should have been
passing the value type of the first operand.

llvm-svn: 171420
2013-01-02 22:13:01 +00:00
Kevin Enderby 726e0ea6eb Adds missing aliases for fcom and fcomp instructions without arguments.
Patch by Michael M Kuperstein!

llvm-svn: 171414
2013-01-02 21:20:15 +00:00
Nadav Rotem c8d7047fa9 AVX: Fix a bug in WidenMaskArithmetic.
llvm-svn: 171397
2013-01-02 17:40:39 +00:00
Dmitri Gribenko 86fb558d9a Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID
This is done to avoid odd test failures, like the one fixed in r171243.

While there, FileCheck'ize tests.

llvm-svn: 171344
2013-01-01 14:04:36 +00:00
Dmitri Gribenko d7beca87f5 Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID
This is done to avoid odd test failures, like the one fixed in r171243.

My previous regex was not good enough to find these.

llvm-svn: 171343
2013-01-01 13:57:25 +00:00
Nadav Rotem b1615b1ac4 Make opt grab the triple from the module and use it to initialize the target machine.
llvm-svn: 171341
2013-01-01 08:00:32 +00:00
Nuno Lopes d896a400f1 recommit r171298 (add support for PHI nodes to ObjectSizeOffsetVisitor). Hopefully with bugs corrected now.
llvm-svn: 171325
2012-12-31 20:45:10 +00:00
Benjamin Kramer af463573cb Revert "add support for PHI nodes to ObjectSizeOffsetVisitor"
This reverts r171298. Breaks clang selfhost.

llvm-svn: 171318
2012-12-31 19:51:10 +00:00
Jakub Staszak c48bbe7170 Add extra CHECK to make sure that 'or' instruction was replaced.
Also add an assert to avoid confusion in the code where is known that C1 <= C2.

llvm-svn: 171310
2012-12-31 18:26:42 +00:00
Rafael Espindola c8288c103d Fix bits check in ELFObjectFile::isSectionZeroInit().
Fixes PR14723.

Patch by Sami Liedes!

llvm-svn: 171309
2012-12-31 18:20:51 +00:00
Rafael Espindola 21bd841d27 Dump sections. Extracted from a patch by Sami Liedes.
llvm-svn: 171304
2012-12-31 16:29:44 +00:00
Rafael Espindola 144af2cb4d Print a header above the symbols. Extracted from a patch by Sami Liedes.
llvm-svn: 171302
2012-12-31 16:05:21 +00:00
Nuno Lopes 7ab7c02d23 add support for PHI nodes to ObjectSizeOffsetVisitor
llvm-svn: 171298
2012-12-31 13:52:36 +00:00
Chris Lattner f5cca68c2c Fix LICM's memory promotion optimization to preserve TBAA tags when
promoting a store in a loop.  This was noticed when working on PR14753,
but isn't directly related.

llvm-svn: 171281
2012-12-31 08:37:17 +00:00
Chris Lattner eeefe1bc07 teach instcombine to preserve TBAA tag when merging two stores, part of
PR14753

llvm-svn: 171279
2012-12-31 08:10:58 +00:00
Jakub Staszak ea2b9b9d67 Transform (A == C1 || A == C2) into (A & ~(C1 ^ C2)) == C1
if C1 and C2 differ only with one bit.
Fixes PR14708.

llvm-svn: 171270
2012-12-31 00:34:55 +00:00
Hal Finkel 6dbdd4307b Support ppcf128 in SelectionDAG::getConstantFP
Fixes pr14751.

Patch by Kai; Thanks!

llvm-svn: 171261
2012-12-30 19:03:32 +00:00
Nadav Rotem 0b37f14371 LoopVectorizer: Fix a bug in the code that updates the loop exiting block.
LCSSA PHIs may have undef values. The vectorizer updates values that are used by outside users such as PHIs.
The bug happened because undefs are not loop values. This patch handles these PHIs.

PR14725

llvm-svn: 171251
2012-12-30 07:47:00 +00:00
Dmitri Gribenko 56bf2e1830 Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID
This is done to avoid odd test failures, like the one fixed in r171243.

llvm-svn: 171250
2012-12-30 02:33:22 +00:00
Dmitri Gribenko 10c4b4d249 Add a check to the test Analysis/ScalarEvolution/2010-09-03-RequiredTransitive.ll
This test did not test anything at all (except for opt crashing, but that was
not the reason why it was added).

llvm-svn: 171248
2012-12-30 01:42:34 +00:00
Dmitri Gribenko b137c9e551 Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID
This is done to avoid odd test failures, like the one fixed in r171243.

llvm-svn: 171246
2012-12-30 01:28:40 +00:00
NAKAMURA Takumi 5a495a5c96 llvm/test/Transforms/GVN/null-aliases-nothing.ll: Fix a RUN line not to emit ModuleID.
Larry Evans reported it fails if source tree contains "load", like "download".

llvm-svn: 171243
2012-12-30 00:33:26 +00:00
Chandler Carruth 86ed53089f Fix a stunning oversight in the inline cost analysis. It was never
propagating one of the values it simplified to a constant across
a myriad of instructions. Notably, ptrtoint instructions when we had
a constant pointer (say, 0) didn't propagate that, blocking a massive
number of down-stream optimizations.

This was uncovered when investigating why we fail to inline and delete
the boilerplate in:

  void f() {
    std::vector<int> v;
    v.push_back(1);
  }

It turns out most of the efforts I've made thus far to improve the
analysis weren't making it far purely because of this. After this is
fixed, the store-to-load forwarding patch enables LLVM to optimize the
above to an empty function. We still can't nuke a second push_back, but
for different reasons.

There is a very real chance this will cause somewhat noticable changes
in inlining behavior, so please let me know if you see regressions (or
improvements!) because of this patch.

llvm-svn: 171196
2012-12-28 14:43:42 +00:00
Chandler Carruth 753e21d057 Teach the inline cost analysis about calls that can be simplified and
how to propagate constants through insert and extract value
instructions.

With the recent improvements to instsimplify, this allows inline cost
analysis to constant fold through intrinsic functions, including notably
the with.overflow intrinsic math routines which often show up inside of
STL abstractions. This is yet another piece in the puzzle of breaking
down the code for:

  void f() {
    std::vector<int> v;
    v.push_back(1);
  }

But it still isn't enough. There are a pile of bugs in inline cost still
blocking this.

llvm-svn: 171195
2012-12-28 14:23:32 +00:00
Chandler Carruth f6182155f6 Teach instsimplify to use the constant folder where appropriate for
constant folding calls. Add the initial tests for this which show that
now instsimplify can simplify blindingly obvious code patterns expressed
with both intrinsics and library calls.

llvm-svn: 171194
2012-12-28 14:23:29 +00:00
Nadav Rotem 3da9ac72fa AVX: Move the ZEXT/ANYEXT DAGCo optimizations to the lowering of these optimizations. The old test cases still cover all of these lowering/optimizations. The single change that we have is that now anyext does not need to zero a register, because it does not use the exact code path as the zero_extend.
llvm-svn: 171178
2012-12-28 05:45:24 +00:00
Alexey Samsonov 29dd7f2090 [ASan] Fix lifetime intrinsics handling. Now for each intrinsic we check if it describes one of 'interesting' allocas. Assume that allocas can go through casts and phi-nodes before apperaring as llvm.lifetime arguments
llvm-svn: 171153
2012-12-27 08:50:58 +00:00
Nadav Rotem 2a054b4475 On AVX/AVX2 the type v8i1 is legalized to v8i16, which is an XMM sized
register. In most cases we actually compare or select YMM-sized registers
and mixing the two types creates horrible code. This commit optimizes
some of the transition sequences.

PR14657.

llvm-svn: 171148
2012-12-27 08:15:45 +00:00
Eric Christopher 3bf29fda91 For the dwarf5 split debug info code split out the string section
per compile unit/skeleton compile unit. Update tests accordingly.

llvm-svn: 171133
2012-12-27 02:14:01 +00:00
Eric Christopher c8a88ee691 FileCheck-ize.
llvm-svn: 171132
2012-12-27 02:13:58 +00:00
Eric Christopher d6152aabbb FileCheck-ize.
llvm-svn: 171131
2012-12-27 02:13:55 +00:00
Eric Christopher 5a6acfa4c8 Right now all of the relocations are 32-bit dwarf, and the relocation
information doesn't return an addend for Rel relocations. Go ahead
and use this information to fix relocation handling inside dwarfdump
for 32-bit ELF REL.

llvm-svn: 171126
2012-12-27 01:07:07 +00:00
Nadav Rotem 5350cd314b If all of the write objects are identified then we can vectorize the loop even if the read objects are unidentified.
PR14719.

llvm-svn: 171124
2012-12-26 23:30:53 +00:00
Nadav Rotem 3f7c4f36ba LoopVectorizer: Optimize the vectorization of consecutive memory access when the iteration step is -1
llvm-svn: 171114
2012-12-26 19:08:17 +00:00
Evgeniy Stepanov 5eb5bf8b46 [msan] Raise alignment of origin stores/loads when possible.
Origin alignment is as high as the alignment of the corresponding application
location, but never less than 4.

llvm-svn: 171110
2012-12-26 11:55:09 +00:00
NAKAMURA Takumi 40aa3285f4 llvm/test/CodeGen/X86: FileCheck-ize two tests in r171083.
llvm-svn: 171084
2012-12-26 03:19:30 +00:00
NAKAMURA Takumi 334f685328 llvm/test/CodeGen/X86: Disable avx in two tests corresponding to r171082.
llvm-svn: 171083
2012-12-26 03:08:55 +00:00
Hal Finkel 30e95a8ebb BBVectorize: Use VTTI to compute costs for intrinsics vectorization
For the time being this includes only some dummy test cases. Once the
generic implementation of the intrinsics cost function does something other
than assuming scalarization in all cases, or some target specializes the
interface, some real test cases can be added.

Also, for consistency, I changed the type of IID from unsigned to Intrinsic::ID
in a few other places.

llvm-svn: 171079
2012-12-26 01:36:57 +00:00
Hal Finkel b44f890133 LoopVectorize: Enable vectorization of the fmuladd intrinsic
llvm-svn: 171076
2012-12-25 23:21:29 +00:00
Hal Finkel 2a456112ec BBVectorize: Enable vectorization of the fmuladd intrinsic
llvm-svn: 171075
2012-12-25 22:36:08 +00:00
Hal Finkel 2ebe6d08cd Loosen scheduling restrictions on the PPC dcbt intrinsic
As with the prefetch intrinsic to which it maps, simply have dcbt
marked as reading from and writing to its arguments instead of having
unmodeled side effects. While this might cause unwanted code motion
(because aliasing checks don't really capture cache-line sharing),
it is more important that prefetches in unrolled loops don't block
the scheduler from rearranging the unrolled loop body.

llvm-svn: 171073
2012-12-25 18:51:18 +00:00
Hal Finkel 1b5ff08d43 Expand PPC64 atomic load and store
Use of store or load with the atomic specifier on 64-bit types would
cause instruction-selection failures. As with the 32-bit case, these
can use the default expansion in terms of cmp-and-swap.

llvm-svn: 171072
2012-12-25 17:22:53 +00:00
Evgeniy Stepanov f19c086d1e [msan] Fix handling of vectors of pointers.
VectorType::getInteger() can not be used with them, because pointer size
depends on the target.

llvm-svn: 171070
2012-12-25 16:04:38 +00:00
Evgeniy Stepanov ec8371283b [msan] Fix handling of select with vector condition.
llvm-svn: 171069
2012-12-25 14:56:21 +00:00
Benjamin Kramer a9f265ee98 Harden test so it's not affected by changes to compare lowering.
This only failed on hosts that don't have SSE41.

llvm-svn: 171066
2012-12-25 13:23:23 +00:00
Benjamin Kramer 81b5a8fd2e X86: Shave off one shuffle from the pcmpeqq sequence for SSE2 by making use of and commutativity.
llvm-svn: 171064
2012-12-25 13:09:08 +00:00
Benjamin Kramer df4af41b9b X86: Custom lower <2 x i64> eq and ne when SSE41 is not available.
pcmpeqd, pshufd, pshufd, pand is cheaper than unpack + cmpq, sbbq, cmpq, sbbq + pack.
Small speedup on loop-vectorized viterbi (-march=core2).

llvm-svn: 171063
2012-12-25 12:54:19 +00:00