derek.holloway
7502bf64a4
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53 lines
1.8 KiB
YAML
53 lines
1.8 KiB
YAML
# RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 -passes="require<machine-loops>,si-pre-emit-peephole,print<machine-loops>" -debug-pass-manager -filetype=null %s 2>&1 | FileCheck %s
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# CHECK: Running analysis: MachineLoopAnalysis on vcc_and_removal_preserves_mli
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# CHECK-NEXT: Running analysis: MachineDominatorTreeAnalysis on vcc_and_removal_preserves_mli
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# CHECK-NEXT: Running pass: SIPreEmitPeepholePass on vcc_and_removal_preserves_mli
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# CHECK-NEXT: Invalidating analysis: MachineDominatorTreeAnalysis on vcc_and_removal_preserves_mli
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# CHECK-NEXT: Running pass: MachineLoopPrinterPass on vcc_and_removal_preserves_mli
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# CHECK-NEXT: Machine loop info for machine function 'vcc_and_removal_preserves_mli':
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# CHECK-NOT: Running analysis: MachineLoopAnalysis on vcc_and_removal_preserves_mli
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# CHECK-NEXT: Loop at depth 1 containing: %bb.1<header><latch><exiting>
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---
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name: vcc_and_removal_preserves_mli
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body: |
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bb.0:
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S_BRANCH %bb.1
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; S_AND gets removed
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bb.1:
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V_CMP_EQ_U32_e32 0, $vgpr0, implicit-def $vcc, implicit $exec
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$vcc = S_AND_B64 $exec, $vcc, implicit-def dead $scc
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S_CBRANCH_VCCNZ %bb.1, implicit $vcc
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S_BRANCH %bb.2
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bb.2:
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S_ENDPGM 0
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...
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# CHECK-LABEL: Running pass: SIPreEmitPeepholePass on vcc_branch_destroys_loop
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# CHECK-NOT: Running analysis: MachineLoopAnalysis on vcc_branch_destroys_loop
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# CHECK: Machine loop info for machine function 'vcc_branch_destroys_loop':
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# CHECK-NOT: Loop at depth
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---
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name: vcc_branch_destroys_loop
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body: |
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bb.0:
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S_BRANCH %bb.1
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; After opt, S_CBRANCH_VCCZ becomes S_BRANCH %bb.3, S_BRANCH %bb.1 removed.
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bb.1:
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$vcc = S_MOV_B64 0
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$vcc = S_AND_B64 $exec, $vcc, implicit-def dead $scc
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S_CBRANCH_VCCZ %bb.3, implicit $vcc
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S_BRANCH %bb.1
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bb.2:
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S_ENDPGM 0
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bb.3:
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S_ENDPGM 0
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...
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