Dan Gohman 760f86f339 Don't create ISD::FNEG nodes after legalize if they aren't legal. ...

Simplify x+0 to x in unsafe-fp-math mode. This avoids a bunch of
redundant work in many cases, because in unsafe-fp-math mode,
ISD::FADD with a constant is considered free to negate, so the
DAGCombiner often negates x+0 to -0-x thinking it's free, when
in reality the end result is -x, which is more expensive than x.

Also, combine x*0 to 0.

This fixes PR3374.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62789 91177308-0d34-0410-b5e6-96231b3b80d8

2009-01-22 21:58:43 +00:00

..

Analysis

Wind SCEV back in time, to Nov 18th. This 'fixes' PR3275, PR3294, PR3295,

2009-01-13 09:18:58 +00:00

Archive

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Assembler

Add the private linkage.

2009-01-15 20:18:42 +00:00

Bindings/Ocaml

[PR2886] Ignore stderr from ocamlc since it prints unresolvable warnings on some platforms.

2008-10-22 12:41:54 +00:00

Bitcode

…

BugPoint

this is unneeded now.

2008-06-16 04:25:39 +00:00

CodeGen

Don't create ISD::FNEG nodes after legalize if they aren't legal.

2009-01-22 21:58:43 +00:00

DebugInfo

Do not use buggy llvm-gcc to generate testcases.

2009-01-22 18:28:11 +00:00

ExecutionEngine

Port this test from dejagnu to unit testing.

2009-01-19 18:08:33 +00:00

Feature

Reimplement the old and horrible bison parser for .ll files with a nice

2009-01-02 07:01:27 +00:00

FrontendAda

Teach constant folding that an inttoptr of a

2008-08-13 20:20:35 +00:00

FrontendC

This was causing invalid memory accesses when

2009-01-21 11:51:17 +00:00

FrontendC++

Remove no-longer relevant comment. Pointed out

2009-01-22 15:37:29 +00:00

FrontendFortran

Testcase for recent llvm-gcc fix

2008-11-03 14:43:31 +00:00

FrontendObjC

Add test for rdar://6394879.

2008-11-26 02:21:12 +00:00

FrontendObjC++

This is an objective-c test, not an objective-c++ one.

2008-10-06 18:42:48 +00:00

Integer

alignment of 0 is not valid.

2009-01-05 08:14:35 +00:00

lib

Fix make check on Solaris 10/x86: the default grep is not GNU grep, same for as.

2008-10-21 17:21:32 +00:00

Linker

Reimplement the old and horrible bison parser for .ll files with a nice

2009-01-02 07:01:27 +00:00

LLVMC

Allow hooks with arguments.

2009-01-21 13:04:00 +00:00

Other

Testcase for PR2894.

2008-10-15 22:34:34 +00:00

Scripts

simplify shell syntax to work better on solaris, patch by

2008-06-25 16:03:42 +00:00

TableGen

Fun x86 encoding tricks: when adding an immediate value of 128,

2008-10-17 01:33:43 +00:00

Transforms

fix a testcase.

2009-01-22 07:08:58 +00:00

Verifier

Reimplement the old and horrible bison parser for .ll files with a nice

2009-01-02 07:01:27 +00:00

Makefile

* Quoted the executable 'runtest' to emphasize the binary needed;

2009-01-01 20:26:05 +00:00

Makefile.tests

…

TestRunner.sh

Fix a bashism in TestRunner.sh.

2008-07-28 18:41:03 +00:00