| # RUN: llc -run-pass si-optimize-exec-masking-pre-ra -mtriple=amdgcn -verify-machineinstrs -o - %s | FileCheck --check-prefixes=GCN %s |
| --- |
| # GCN-LABEL: name: opt_exec_copy_fold |
| # GCN: %2:vreg_64 = COPY $exec |
| name: opt_exec_copy_fold |
| tracksRegLiveness: true |
| liveins: |
| - { reg: '$sgpr0_sgpr1' } |
| body: | |
| bb.0: |
| liveins: $sgpr0_sgpr1 |
| |
| %0:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, $sgpr0_sgpr1, implicit $exec |
| %1:sreg_64 = V_CMP_NE_U32_e64 0, %0, implicit $exec |
| %2:vreg_64 = COPY $exec |
| %3:sreg_64 = V_CMP_EQ_U64_e64 %1, %2, implicit $exec |
| $scc = COPY %3 |
| S_CBRANCH_SCC0 %bb.1, implicit $scc |
| |
| bb.1: |
| ... |
| |
| |
