Manman Ren 2cdc8afccf X86: optimize generated code for integer ABS ...

This patch will generate the following for integer ABS:
      movl    %edi, %eax
      negl    %eax
      cmovll  %edi, %eax
INSTEAD OF
      movl    %edi, %ecx
      sarl    $31, %ecx
      leal    (%rdi,%rcx), %eax
      xorl    %ecx, %eax

There exists a target-independent DAG combine for integer ABS, which converts
integer ABS to sar+add+xor. For X86, we match this pattern back to neg+cmov. 
This is implemented in PerformXorCombine.

rdar://10695237

llvm-svn: 158175

2012-06-07 22:39:10 +00:00

clang

Minor comments and changes to clang-completion-mode.el, from David Wood!

2012-06-07 22:33:29 +00:00

compiler-rt

[Sanitizer] move internal_strdup and internal_memcpy to common runtime. Make internal allocations from TSan runtime call InternalAlloc from common runtime

2012-06-07 11:54:08 +00:00

debuginfo-tests

Fix this for buggy gdb behavior alongside the change

2012-06-05 18:16:03 +00:00

libclc

configure.py: Add an install rule.

2012-06-01 17:29:59 +00:00

libcxx

Fix warning flags for CMake builds, from Andrew C. Morrow!

2012-06-07 22:26:00 +00:00

libcxxabi

Fix bug in cxa_demangle involving template substitution.

2012-05-02 15:38:11 +00:00

lld

put the public function createReaderPECOFF() in the lld namespace and everything else in is own namespace

2012-06-07 02:23:48 +00:00

lldb

Added a setting (target.process.disable-memory-cache)

2012-06-07 22:26:42 +00:00

llvm

X86: optimize generated code for integer ABS

2012-06-07 22:39:10 +00:00

polly

Fix some coding convention problems.

2012-06-06 16:33:15 +00:00

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