Benjamin Kramer 202be06318 X86: If we have an instruction that sets a flag and a zero test on the input of that instruction try to eliminate the test. ...

For example
	tzcntl	%edi, %ebx
	testl %edi, %edi
	je	.label

can be rewritten into
	tzcntl	%edi, %ebx
	jb 	.label

A minor complication is that tzcnt sets CF instead of ZF when the input
is zero, we have to rewrite users of the flags from ZF to CF. Currently
we recognize patterns using lzcnt, tzcnt and popcnt.

Differential Revision: http://reviews.llvm.org/D3454

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208788 91177308-0d34-0410-b5e6-96231b3b80d8

2014-05-14 16:14:45 +00:00

..

Analysis

[Test] Trim unnecessary .c and .cpp from config.suffix in lit.local.cfg

2014-05-12 19:57:31 +00:00

Assembler

Don't crash on redefinitions.

2014-05-09 21:49:17 +00:00

Bindings

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Bitcode

IR: Don't allow non-default visibility on local linkage

2014-05-07 22:57:20 +00:00

BugPoint

Revert r206989, "Mark llvm/test/BugPoint/compile-custom.ll as XFAIL:vg_leak." It has been fixed since r207265.

2014-04-27 11:59:33 +00:00

CodeGen

X86: If we have an instruction that sets a flag and a zero test on the input of that instruction try to eliminate the test.

2014-05-14 16:14:45 +00:00

DebugInfo

Recommit r208506: DebugInfo: Include lexical scopes in inlined subroutines.

2014-05-14 01:08:28 +00:00

ExecutionEngine

[ARM64] Disable regression tests for the old JIT.

2014-04-29 15:02:40 +00:00

Feature

[IR] Make {extract,insert}element accept an index of any integer type.

2014-05-01 22:12:39 +00:00

FileCheck

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Instrumentation

[asan] Set debug location in ASan function prologue.

2014-05-14 10:30:15 +00:00

Integer

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JitListener

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Linker

Fix DataLayout::operator==().

2014-04-22 17:47:03 +00:00

LTO

IR: Don't allow non-default visibility on local linkage

2014-05-07 22:57:20 +00:00

MC

[mips] Test that IAS for -mcpu=mips5 does not accept MIPS64 insns and -mcpu=mips(5|64) does not accept MIPS64r2

2014-05-14 15:35:03 +00:00

Object

[obj2yaml] Support ELF input format in the obj2yaml tool.

2014-05-14 05:07:47 +00:00

Other

Do not make -pass-remarks additive.

2014-05-06 19:14:00 +00:00

TableGen

test/TableGen: Remove XFAIL:vg_leak out of 3 tests corresponding to r208293.

2014-05-09 08:18:33 +00:00

tools

[Test] Trim unnecessary .c and .cpp from config.suffix in lit.local.cfg

2014-05-12 19:57:31 +00:00

Transforms

Fix the case when reordering shuffle and binop produces a constant.

2014-05-14 09:05:09 +00:00

Unit

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Verifier

Allow sret on the second parameter as well as the first

2014-05-09 22:32:13 +00:00

YAMLParser

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.clang-format

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CMakeLists.txt

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lit.cfg

[Test] Remove c-index-test from the list of substitutions

2014-05-07 18:16:02 +00:00

lit.site.cfg.in

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Makefile

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Makefile.tests

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TestRunner.sh

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