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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-10-17 17:52:35 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-10-17 17:52:35 +0000 |
| commit | a10c09804d92db4f41fd0df29ea3c0346e297c59 (patch) | |
| tree | e82d4aecfee86e3d760cc42c5b766eb410a833ea /llvm/lib/Target/X86/X86FloatingPoint.cpp | |
| parent | 086da3411969af31c55faeecda722939ec99c4d9 (diff) | |
| download | bcm5719-llvm-a10c09804d92db4f41fd0df29ea3c0346e297c59.tar.gz bcm5719-llvm-a10c09804d92db4f41fd0df29ea3c0346e297c59.zip | |
Check for empty YMM use-def lists in X86VZeroUpper.
The previous MRI.isPhysRegUsed(YMM0) would also return true when the
function contains a call to a function that may clobber YMM0. That's
most of them.
Checking the use-def chains allows us to skip functions that don't
explicitly mention YMM registers.
llvm-svn: 166110
Diffstat (limited to 'llvm/lib/Target/X86/X86FloatingPoint.cpp')
0 files changed, 0 insertions, 0 deletions
