Implement code to keep the stack pointer aligned to an 8 byte boundary.
This improves the performance of the power benchmark by a few percent.
This will be neccesary for SSE code, which requires 16 byte alignment of
the stack.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5320 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86TargetMachine.cpp b/lib/Target/X86/X86TargetMachine.cpp
index db84665..c578ba8 100644
--- a/lib/Target/X86/X86TargetMachine.cpp
+++ b/lib/Target/X86/X86TargetMachine.cpp
@@ -37,7 +37,7 @@
1, 4,
(Config & TM::PtrSizeMask) == TM::PtrSize64 ? 8 : 4,
(Config & TM::PtrSizeMask) == TM::PtrSize64 ? 8 : 4),
- FrameInfo(TargetFrameInfo::StackGrowsDown, 1/*16*/, 0) {
+ FrameInfo(TargetFrameInfo::StackGrowsDown, 8/*16 for SSE*/, 4) {
}
/// addPassesToJITCompile - Add passes to the specified pass manager to