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