# RUN: llc -mtriple amdgcn -run-pass livevars -run-pass phi-node-elimination -verify-machineinstrs -o - %s | FileCheck %s
# RUN: llc -mtriple amdgcn --passes='require<live-vars>,phi-node-elimination' -o - %s | FileCheck %s
# CHECK-LABEL: phi-cf-test
# CHECK: bb.0:
# CHECK: [[COND:%[0-9]+]]:sreg_64 = V_CMP_EQ_U32_e64
# CHECK: [[IF_SOURCE0:%[0-9]+]]:sreg_64 = SI_IF [[COND]], %bb.1, implicit-def dead $exec, implicit-def dead $scc, implicit $exec
# CHECK: [[IF_INPUT_REG:%[0-9]+]]:sreg_64 = S_MOV_B64_term killed [[IF_SOURCE0]], implicit $exec
# CHECK: bb.1:
# CHECK: [[END_CF_ARG:%[0-9]+]]:sreg_64 = COPY killed [[IF_INPUT_REG]]
# CHECK: SI_END_CF killed [[END_CF_ARG]], implicit-def dead $exec, implicit-def dead $scc, implicit $exec
# CHECK: bb.2:
# CHECK: [[IF_SOURCE1:%[0-9]+]]:sreg_64 = SI_IF [[COND]], %bb.1, implicit-def dead $exec, implicit-def dead $scc, implicit $exec
# CHECK: [[IF_INPUT_REG]]:sreg_64 = S_MOV_B64_term killed [[IF_SOURCE1]], implicit $exec
...
---
name: phi-cf-test
tracksRegLiveness: true
body: |
bb.0:
successors: %bb.3(0x40000000), %bb.2(0x40000000)
liveins: $vgpr0
%5:vgpr_32(s32) = COPY $vgpr0
%0:sreg_64 = V_CMP_EQ_U32_e64 0, %5(s32), implicit $exec
%18:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
%22:sreg_64 = SI_IF %0, %bb.2, implicit-def dead $exec, implicit-def dead $scc, implicit $exec
S_BRANCH %bb.3
bb.2:
successors: %bb.3(0x80000000)
%24:sreg_64 = PHI %20, %bb.3, %22, %bb.0
%23:vgpr_32 = PHI %19, %bb.3, %18, %bb.0
SI_END_CF %24, implicit-def dead $exec, implicit-def dead $scc, implicit $exec
%3:vgpr_32, dead %10:sreg_64 = nsw V_ADD_CO_U32_e64 1, %23, 0, implicit $exec
bb.3:
successors: %bb.3(0x40000000), %bb.2(0x40000000)
%4:vgpr_32 = PHI %19, %bb.3, %3, %bb.2, %18, %bb.0
%15:sreg_32_xm0 = S_MOV_B32 61440
%16:sreg_32_xm0 = S_MOV_B32 -1
%17:sgpr_128 = REG_SEQUENCE undef %14:sreg_32_xm0, %subreg.sub0, undef %12:sreg_32_xm0, %subreg.sub1, %16, %subreg.sub2, %15, %subreg.sub3
BUFFER_STORE_DWORD_OFFSET %4, %17, 0, 0, 0, 0, implicit $exec :: (volatile store (s32) into `ptr addrspace(1) undef`, addrspace 1)
%19:vgpr_32 = COPY %4
%20:sreg_64 = SI_IF %0, %bb.2, implicit-def dead $exec, implicit-def dead $scc, implicit $exec
S_BRANCH %bb.3
...
Codebase Browser
llvm