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| author | Marek Olsak <marek.olsak@amd.com> | 2016-12-09 19:49:48 +0000 |
|---|---|---|
| committer | Marek Olsak <marek.olsak@amd.com> | 2016-12-09 19:49:48 +0000 |
| commit | 693e9be9181eb8b3cc91e254a2acb49accafbd9c (patch) | |
| tree | ab20f69676574812c4cb167ea1e0a44a85374fbc /llvm/lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp | |
| parent | 91f22fbf4f5285586dfe8ca5e09a1880e82a2eb3 (diff) | |
| download | bcm5719-llvm-693e9be9181eb8b3cc91e254a2acb49accafbd9c.tar.gz bcm5719-llvm-693e9be9181eb8b3cc91e254a2acb49accafbd9c.zip | |
AMDGPU/SI: Don't reserve FLAT_SCR on non-HSA targets & without stack objects
Summary: This frees 2 scalar registers.
Reviewers: tstellarAMD
Subscribers: qcolombet, arsenm, kzhuravl, wdng, nhaehnle, yaxunl, tony-tye
Differential Revision: https://reviews.llvm.org/D27150
llvm-svn: 289261
Diffstat (limited to 'llvm/lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp')
| -rw-r--r-- | llvm/lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/llvm/lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp b/llvm/lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp index e711a09ccea..7b5ebc57436 100644 --- a/llvm/lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp +++ b/llvm/lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp @@ -391,7 +391,10 @@ void AMDGPUAsmPrinter::getSIProgramInfo(SIProgramInfo &ProgInfo, case AMDGPU::FLAT_SCR: case AMDGPU::FLAT_SCR_LO: case AMDGPU::FLAT_SCR_HI: - FlatUsed = true; + // Even if FLAT_SCRATCH is implicitly used, it has no effect if flat + // instructions aren't used to access the scratch buffer. + if (MFI->hasFlatScratchInit()) + FlatUsed = true; continue; case AMDGPU::TBA: |
