diff options
Diffstat (limited to 'llvm/test')
| -rw-r--r-- | llvm/test/CodeGen/AMDGPU/regcoalesce-prune.mir | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/AMDGPU/regcoalesce-prune.mir b/llvm/test/CodeGen/AMDGPU/regcoalesce-prune.mir new file mode 100644 index 00000000000..7d8c7bb105a --- /dev/null +++ b/llvm/test/CodeGen/AMDGPU/regcoalesce-prune.mir @@ -0,0 +1,31 @@ +# RUN: llc -o - %s -mtriple=amdgcn-amd-amdhsa-opencl -run-pass=simple-register-coalescing | FileCheck %s +--- +# Checks for a bug where subregister liveranges were not properly pruned for +# an IMPLCITI_DEF that gets removed completely. +# +# CHECK-LABEL: name: func +# IMPLICIT_DEF should be gone without llc hitting assertion failures. +# CHECK-NOT: IMPLCITI_DEF +name: func +tracksRegLiveness: true +body: | + bb.0: + undef %5.sub1 = V_MOV_B32_e32 0, implicit %exec + %6 = COPY %5 + S_CBRANCH_VCCZ %bb.2, implicit undef %vcc + + bb.1: + %1 : sreg_32_xm0 = S_MOV_B32 0 + undef %0.sub0 : sreg_64 = COPY %1 + %0.sub1 = COPY %1 + %4 : vreg_64 = COPY killed %0 + %5 : vreg_64 = IMPLICIT_DEF + %6 : vreg_64 = COPY killed %4 + + bb.2: + %2 : vgpr_32 = V_CVT_F32_I32_e32 killed %5.sub1, implicit %exec + + bb.3: + %3 : vgpr_32 = V_CVT_F32_I32_e32 killed %6.sub1, implicit %exec + S_ENDPGM +... |
