| # RUN: llc -o - %s -mtriple=amdgpu8.03 -run-pass=si-late-branch-lowering -verify-machineinstrs | FileCheck -check-prefix=GCN %s | |
| # RUN: llc -o - %s -mtriple=amdgpu8.03 -passes=si-late-branch-lowering | FileCheck -check-prefix=GCN %s | |
| # GCN-LABEL: readlane_exec0 | |
| # GCN: bb.0 | |
| # GCN: S_CBRANCH_EXECZ %bb.2 | |
| --- | |
| name: readlane_exec0 | |
| body: | | |
| bb.0: | |
| successors: %bb.1, %bb.2 | |
| liveins: $vgpr1_vgpr2:0x00000001, $vgpr2_vgpr3:0x00000003 | |
| $vgpr4 = V_AND_B32_e32 1, $vgpr1, implicit $exec | |
| V_CMP_EQ_U32_e32 1, killed $vgpr4, implicit-def $vcc, implicit $exec | |
| $sgpr0_sgpr1 = S_AND_SAVEEXEC_B64 killed $vcc, implicit-def $exec, implicit-def $scc, implicit $exec | |
| S_CBRANCH_EXECZ %bb.2, implicit $exec | |
| S_BRANCH %bb.1 | |
| bb.1: | |
| $sgpr10 = V_READFIRSTLANE_B32 $vgpr2, implicit $exec | |
| $sgpr11 = V_READFIRSTLANE_B32 $vgpr3, implicit $exec | |
| $sgpr10 = S_LOAD_DWORD_IMM killed $sgpr10_sgpr11, 0, 0 | |
| S_WAITCNT 127 | |
| $vgpr0 = V_XOR_B32_e32 killed $sgpr10, killed $vgpr0, implicit $exec | |
| bb.2: | |
| $exec = S_OR_B64 $exec, killed $sgpr0_sgpr1, implicit-def $scc | |
| ... |