| # 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: {{ $}} |
| ; 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(s32) = COPY $w0 |
| %1:gpr(s32) = G_CONSTANT i32 0 |
| %3:gpr(s32) = G_CONSTANT i32 1 |
| %5:gpr(s32) = G_CONSTANT i32 2 |
| G_BR %bb.3 |
| |
| bb.5: |
| ; This block is unreachable. |
| %unreachable_inst:gpr(s32) = G_XOR %1, %3 |
| $w0 = COPY %unreachable_inst(s32) |
| |
| bb.3: |
| successors: %bb.4(0x80000000) |
| |
| %6:gpr(s32) = G_ADD %0, %5 |
| |
| bb.4: |
| %7:gpr(s32) = G_PHI %6(s32), %bb.3 |
| $w0 = COPY %7(s32) |
| RET_ReallyLR implicit $w0 |
| |
| ... |