| # RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx90a -verify-machineinstrs -run-pass=si-opt-vgpr-liverange -o - %s | FileCheck %s |
| # |
| # This is a very rare case which comes from llvm-reduce. The SI_IF/SI_ELSE usage is quite different from normal. |
| # |
| # CHECK-LABEL: name: unusual_if_else |
| --- |
| name: unusual_if_else |
| tracksRegLiveness: true |
| machineFunctionInfo: |
| scratchRSrcReg: '$sgpr0_sgpr1_sgpr2_sgpr3' |
| stackPtrOffsetReg: '$sgpr32' |
| body: | |
| bb.0: |
| successors: %bb.1(0x80000000) |
| |
| %0:sreg_32 = S_ADD_U32 undef %1.sub0:sgpr_64, 32, implicit-def $scc |
| %2:sreg_32 = S_ADDC_U32 undef %1.sub1:sgpr_64, 0, implicit-def dead $scc, implicit killed $scc |
| %3:sreg_64 = REG_SEQUENCE killed %0, %subreg.sub0, killed %2, %subreg.sub1 |
| %4:vgpr_32 = V_MOV_B32_e32 0, implicit $exec |
| |
| bb.1: |
| successors: %bb.2(0x40000000), %bb.4(0x40000000) |
| |
| %5:sreg_64 = V_CMP_LT_I32_e64 0, %4, implicit $exec |
| %6:sreg_64 = SI_IF killed %5, %bb.2, implicit-def dead $exec, implicit-def dead $scc, implicit $exec |
| S_BRANCH %bb.4 |
| |
| bb.2: |
| successors: %bb.4(0x40000000), %bb.3(0x40000000) |
| |
| dead %7:sreg_64 = SI_ELSE killed %6, %bb.4, implicit-def dead $exec, implicit-def dead $scc, implicit $exec |
| S_BRANCH %bb.3 |
| |
| bb.3: |
| successors: %bb.4(0x80000000) |
| |
| %8:sreg_64 = V_CMP_EQ_U32_e64 0, killed %4, implicit $exec |
| dead %9:sreg_64 = SI_IF killed %8, %bb.4, implicit-def dead $exec, implicit-def dead $scc, implicit $exec |
| S_BRANCH %bb.4 |
| |
| bb.4: |
| |
| ... |