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| author | Michael Liao <michael.hliao@gmail.com> | 2019-07-11 23:53:30 +0000 |
|---|---|---|
| committer | Michael Liao <michael.hliao@gmail.com> | 2019-07-11 23:53:30 +0000 |
| commit | 16d3c1ac03d34f215f253d7990b7bad7ad4cdebf (patch) | |
| tree | e8b5e7e7287624552885c5f92b6da188249a5cde /llvm/lib | |
| parent | 803b994e9a4d1077b3d2965b964682839bc5e5c7 (diff) | |
| download | bcm5719-llvm-16d3c1ac03d34f215f253d7990b7bad7ad4cdebf.tar.gz bcm5719-llvm-16d3c1ac03d34f215f253d7990b7bad7ad4cdebf.zip | |
[AMDGPU] Skip calculating callee saved registers for entry function.
Reviewers: arsenm
Subscribers: kzhuravl, jvesely, wdng, nhaehnle, yaxunl, dstuttard, tpr, t-tye, hiraditya, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D64596
llvm-svn: 365846
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Target/AMDGPU/SIFrameLowering.cpp | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/llvm/lib/Target/AMDGPU/SIFrameLowering.cpp b/llvm/lib/Target/AMDGPU/SIFrameLowering.cpp index d73f2b4abae..44647d8ba87 100644 --- a/llvm/lib/Target/AMDGPU/SIFrameLowering.cpp +++ b/llvm/lib/Target/AMDGPU/SIFrameLowering.cpp @@ -975,8 +975,10 @@ void SIFrameLowering::determineCalleeSaves(MachineFunction &MF, BitVector &SavedVGPRs, RegScavenger *RS) const { TargetFrameLowering::determineCalleeSaves(MF, SavedVGPRs, RS); - SIMachineFunctionInfo *MFI = MF.getInfo<SIMachineFunctionInfo>(); + if (MFI->isEntryFunction()) + return; + const MachineFrameInfo &FrameInfo = MF.getFrameInfo(); const GCNSubtarget &ST = MF.getSubtarget<GCNSubtarget>(); const SIRegisterInfo *TRI = ST.getRegisterInfo(); @@ -1049,6 +1051,8 @@ void SIFrameLowering::determineCalleeSavesSGPR(MachineFunction &MF, RegScavenger *RS) const { TargetFrameLowering::determineCalleeSaves(MF, SavedRegs, RS); const SIMachineFunctionInfo *MFI = MF.getInfo<SIMachineFunctionInfo>(); + if (MFI->isEntryFunction()) + return; const GCNSubtarget &ST = MF.getSubtarget<GCNSubtarget>(); const SIRegisterInfo *TRI = ST.getRegisterInfo(); |
