Manman Ren 87253c2ebd X86: replace SUB with CMP if possible ...

This patch will optimize the following
    movq    %rdi, %rax
    subq    %rsi, %rax
    cmovsq  %rsi, %rdi
    movq    %rdi, %rax
to
    cmpq    %rsi, %rdi
    cmovsq  %rsi, %rdi
    movq    %rdi, %rax

Perform this optimization if the actual result of SUB is not used.

rdar: 11540023


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158126 91177308-0d34-0410-b5e6-96231b3b80d8

2012-06-07 00:42:47 +00:00

..

Analysis

Round 2 of dead private variable removal.

2012-06-06 19:47:08 +00:00

Archive

Include cstdio in a few place that depended on getting it transitively through StringExtras.h

2012-03-23 11:35:30 +00:00

AsmParser

switch AttrListPtr::get to take an ArrayRef, simplifying a lot of clients.

2012-05-28 01:47:44 +00:00

Bitcode

PR1255: case ranges.

2012-06-02 09:42:43 +00:00

CodeGen

Revert r157755.

2012-06-06 23:53:03 +00:00

DebugInfo

Fix a C++11 UDL conflict.

2012-04-04 20:33:56 +00:00

ExecutionEngine

Round 2 of dead private variable removal.

2012-06-06 19:47:08 +00:00

Linker

Supply a C interface to the "LinkModules" method.

2012-05-09 08:55:40 +00:00

MC

Add accessors for all private members of DisasmContext.

2012-06-06 20:45:10 +00:00

Object

Mark some static arrays as const.

2012-05-24 06:35:32 +00:00

Support

Use access(2) instead of stat(2) to check if a file exists.

2012-06-02 16:28:09 +00:00

TableGen

Fix 80 columns.

2012-06-01 00:58:41 +00:00

Target

X86: replace SUB with CMP if possible

2012-06-07 00:42:47 +00:00

Transforms

Remove unused private fields found by clang's new -Wunused-private-field.

2012-06-06 18:25:08 +00:00

VMCore

Simplify the fma4 renaming code.

2012-06-03 16:48:52 +00:00

CMakeLists.txt

…

LLVMBuild.txt

LLVMBuild: Introduce a common section which currently has a list of the

2011-12-12 22:45:54 +00:00

Makefile

…