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Hans Wennborg 523f800e90 X86 memcpy lowering: use "rep movs" even when esi is used as base pointer 
For functions where esi is used as base pointer, we would previously fall back
from lowering memcpy with "rep movs" because that clobbers esi.

With this patch, we just store esi in another physical register, and restore
it afterwards. This adds a little bit of register preassure, but the more
efficient memcpy should be worth it.

Differential Revision: http://llvm-reviews.chandlerc.com/D2968

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204174 91177308-0d34-0410-b5e6-96231b3b80d8
2014-03-18 20:04:34 +00:00
autoconf Remove projects/sample. 2014-03-12 22:40:22 +00:00
bindings [python-bindings] Remove some cruft that snuck in. 2014-02-23 04:43:26 +00:00
cmake [CMake][cygming] Disable --out-implib from executables. 2014-03-16 13:51:24 +00:00
docs Add IAS/EHABI changes to release notes 2014-03-18 10:16:15 +00:00
examples Fix warnings about an variable only used in asserts. 2014-03-06 06:35:46 +00:00
include [msan] Origin tracking with history. 2014-03-18 13:30:56 +00:00
lib X86 memcpy lowering: use "rep movs" even when esi is used as base pointer 2014-03-18 20:04:34 +00:00
projects Remove projects/sample. 2014-03-12 22:40:22 +00:00
test X86 memcpy lowering: use "rep movs" even when esi is used as base pointer 2014-03-18 20:04:34 +00:00
tools Use early returns to reduce nesting. 2014-03-18 18:58:51 +00:00
unittests DebugIRTests: Fixup for r204130. 2014-03-18 09:58:28 +00:00
utils Replace ValueTypes.h with MachineValueType.h if possible. 2014-03-15 09:11:41 +00:00
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CMakeLists.txt static link polly into tools 2014-03-14 04:04:14 +00:00
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configure Remove projects/sample. 2014-03-12 22:40:22 +00:00
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llvm.spec.in
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README.txt 

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