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| author | Michael Kuperstein <michael.m.kuperstein@intel.com> | 2015-02-01 11:44:44 +0000 |
|---|---|---|
| committer | Michael Kuperstein <michael.m.kuperstein@intel.com> | 2015-02-01 11:44:44 +0000 |
| commit | bd57186c763f9c47a6da570f56aceabd830e32a0 (patch) | |
| tree | e50de967a38d0d8a6a12df08fd6a6628bd7f7d49 /llvm/lib/CodeGen/TargetFrameLoweringImpl.cpp | |
| parent | af3c256ffa7110965cd05dcf49a9f4f70c7f225c (diff) | |
| download | llvm-bd57186c763f9c47a6da570f56aceabd830e32a0.zip llvm-bd57186c763f9c47a6da570f56aceabd830e32a0.tar.gz llvm-bd57186c763f9c47a6da570f56aceabd830e32a0.tar.bz2 | |
[X86] Convert esp-relative movs of function arguments to pushes, step 2
This moves the transformation introduced in r223757 into a separate MI pass.
This allows it to cover many more cases (not only cases where there must be a
reserved call frame), and perform rudimentary call folding. It still doesn't
have a heuristic, so it is enabled only for optsize/minsize, with stack
alignment <= 8, where it ought to be a fairly clear win.
Differential Revision: http://reviews.llvm.org/D6789
llvm-svn: 227728
Diffstat (limited to 'llvm/lib/CodeGen/TargetFrameLoweringImpl.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/TargetFrameLoweringImpl.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/TargetFrameLoweringImpl.cpp b/llvm/lib/CodeGen/TargetFrameLoweringImpl.cpp index 1557d102..e3f01912 100644 --- a/llvm/lib/CodeGen/TargetFrameLoweringImpl.cpp +++ b/llvm/lib/CodeGen/TargetFrameLoweringImpl.cpp @@ -42,3 +42,8 @@ int TargetFrameLowering::getFrameIndexReference(const MachineFunction &MF, FrameReg = RI->getFrameRegister(MF); return getFrameIndexOffset(MF, FI); } + +bool TargetFrameLowering::needsFrameIndexResolution( + const MachineFunction &MF) const { + return MF.getFrameInfo()->hasStackObjects(); +} |