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| author | Stanislav Mekhanoshin <Stanislav.Mekhanoshin@amd.com> | 2017-03-24 18:55:20 +0000 |
|---|---|---|
| committer | Stanislav Mekhanoshin <Stanislav.Mekhanoshin@amd.com> | 2017-03-24 18:55:20 +0000 |
| commit | 70603dcef22e6cd27d5dd7e544a0c479ba4f0dc5 (patch) | |
| tree | f8096c2ad00ccf709fa57487897d3e73a578ecdc /llvm/test/CodeGen | |
| parent | 4986d9fb45e40866f5df1b04bafaa94ac41b03d4 (diff) | |
| download | bcm5719-llvm-70603dcef22e6cd27d5dd7e544a0c479ba4f0dc5.tar.gz bcm5719-llvm-70603dcef22e6cd27d5dd7e544a0c479ba4f0dc5.zip | |
[AMDGPU] Fold V_CNDMASK with identical source operands
Such instructions sometimes appear after lowering and folding.
Differential Revision: https://reviews.llvm.org/D31318
llvm-svn: 298723
Diffstat (limited to 'llvm/test/CodeGen')
| -rw-r--r-- | llvm/test/CodeGen/AMDGPU/fold-cndmask.mir | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/AMDGPU/fold-cndmask.mir b/llvm/test/CodeGen/AMDGPU/fold-cndmask.mir new file mode 100644 index 00000000000..8dfec916630 --- /dev/null +++ b/llvm/test/CodeGen/AMDGPU/fold-cndmask.mir @@ -0,0 +1,34 @@ +# RUN: llc -march=amdgcn -run-pass si-fold-operands -verify-machineinstrs -o - %s | FileCheck %s + +# CHECK: %1 = V_MOV_B32_e32 0, implicit %exec +# CHECK: %2 = V_MOV_B32_e32 0, implicit %exec +# CHECK: %4 = COPY %3 +# CHECK: %5 = V_MOV_B32_e32 0, implicit %exec +# CHECK: %6 = V_MOV_B32_e32 0, implicit %exec +# CHECK: %7 = COPY %3 + +--- +name: fold_cndmask +tracksRegLiveness: true +registers: + - { id: 0, class: sgpr_64 } + - { id: 1, class: vgpr_32 } + - { id: 2, class: vgpr_32 } + - { id: 3, class: vgpr_32 } + - { id: 4, class: vgpr_32 } + - { id: 5, class: vgpr_32 } + - { id: 6, class: vgpr_32 } + - { id: 7, class: vgpr_32 } +body: | + bb.0.entry: + %0 = IMPLICIT_DEF + %1 = V_CNDMASK_B32_e64 0, 0, %0, implicit %exec + %2 = V_CNDMASK_B32_e64 %1, %1, %0, implicit %exec + %3 = IMPLICIT_DEF + %4 = V_CNDMASK_B32_e64 %3, %3, %0, implicit %exec + %5 = COPY %1 + %6 = V_CNDMASK_B32_e64 %5, 0, %0, implicit %exec + %vcc = IMPLICIT_DEF + %7 = V_CNDMASK_B32_e32 %3, %3, implicit %exec, implicit %vcc + +... |
