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TheRock/compiler/amd-llvm/llvm/test/CodeGen/AArch64/GlobalISel/select-unreachable-blocks.mir
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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=aarch64-unknown-unknown -o - -verify-machineinstrs -run-pass=instruction-select %s | FileCheck %s
---
name: test_unreachable_delete
alignment: 4
exposesReturnsTwice: false
legalized: true
regBankSelected: true
selected: false
tracksRegLiveness: true
liveins:
body: |
; CHECK-LABEL: name: test_unreachable_delete
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.2(0x80000000)
; CHECK-NEXT: liveins: $w0
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY:%[0-9]+]]:gpr32sp = COPY $w0
; CHECK-NEXT: [[COPY1:%[0-9]+]]:gpr32 = COPY $wzr
; CHECK-NEXT: [[MOVi32imm:%[0-9]+]]:gpr32 = MOVi32imm 1
; CHECK-NEXT: B %bb.2
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: successors: %bb.2(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2:
; CHECK-NEXT: successors: %bb.3(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[ADDWri:%[0-9]+]]:gpr32sp = ADDWri [[COPY]], 2, 0
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.3:
; CHECK-NEXT: [[PHI:%[0-9]+]]:gpr32 = PHI [[ADDWri]], %bb.2
; CHECK-NEXT: $w0 = COPY [[PHI]]
; CHECK-NEXT: RET_ReallyLR implicit $w0
bb.1:
successors: %bb.3
liveins: $w0
%0:gpr(i32) = COPY $w0
%1:gpr(i32) = G_CONSTANT i32 0
%3:gpr(i32) = G_CONSTANT i32 1
%5:gpr(i32) = G_CONSTANT i32 2
G_BR %bb.3
bb.5:
; This block is unreachable.
%unreachable_inst:gpr(i32) = G_XOR %1, %3
$w0 = COPY %unreachable_inst(i32)
bb.3:
successors: %bb.4(0x80000000)
%6:gpr(i32) = G_ADD %0, %5
bb.4:
%7:gpr(i32) = G_PHI %6(i32), %bb.3
$w0 = COPY %7(i32)
RET_ReallyLR implicit $w0
...