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| author | Stanislav Mekhanoshin <Stanislav.Mekhanoshin@amd.com> | 2019-05-02 03:47:23 +0000 |
|---|---|---|
| committer | Stanislav Mekhanoshin <Stanislav.Mekhanoshin@amd.com> | 2019-05-02 03:47:23 +0000 |
| commit | f2baae0abb54cfcc2cc36192d0110dd5c022f033 (patch) | |
| tree | af0c65f44e954ee3e0a5b6528ffb87a751fa2b27 /llvm/lib/Target/AMDGPU/AMDGPUSubtarget.cpp | |
| parent | b929a0062e485f7747c5e849f5569e79afb8ae4d (diff) | |
| download | bcm5719-llvm-f2baae0abb54cfcc2cc36192d0110dd5c022f033.tar.gz bcm5719-llvm-f2baae0abb54cfcc2cc36192d0110dd5c022f033.zip | |
[AMDGPU] gfx1010 constant bus limit
Constant bus limit has increased to 2 with GFX10.
Differential Revision: https://reviews.llvm.org/D61404
llvm-svn: 359754
Diffstat (limited to 'llvm/lib/Target/AMDGPU/AMDGPUSubtarget.cpp')
| -rw-r--r-- | llvm/lib/Target/AMDGPU/AMDGPUSubtarget.cpp | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/llvm/lib/Target/AMDGPU/AMDGPUSubtarget.cpp b/llvm/lib/Target/AMDGPU/AMDGPUSubtarget.cpp index 2643cb05742..6d47631da1e 100644 --- a/llvm/lib/Target/AMDGPU/AMDGPUSubtarget.cpp +++ b/llvm/lib/Target/AMDGPU/AMDGPUSubtarget.cpp @@ -256,6 +256,26 @@ GCNSubtarget::GCNSubtarget(const Triple &TT, StringRef GPU, StringRef FS, *this, *static_cast<AMDGPURegisterBankInfo *>(RegBankInfo.get()), TM)); } +unsigned GCNSubtarget::getConstantBusLimit(unsigned Opcode) const { + if (getGeneration() < GFX10) + return 1; + + switch (Opcode) { + case AMDGPU::V_LSHLREV_B64: + case AMDGPU::V_LSHLREV_B64_gfx10: + case AMDGPU::V_LSHL_B64: + case AMDGPU::V_LSHRREV_B64: + case AMDGPU::V_LSHRREV_B64_gfx10: + case AMDGPU::V_LSHR_B64: + case AMDGPU::V_ASHRREV_I64: + case AMDGPU::V_ASHRREV_I64_gfx10: + case AMDGPU::V_ASHR_I64: + return 1; + } + + return 2; +} + unsigned AMDGPUSubtarget::getMaxLocalMemSizeWithWaveCount(unsigned NWaves, const Function &F) const { if (NWaves == 1) |
