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TheRock/compiler/amd-llvm/llvm/test/CodeGen/ARM/branch-folder-single-bb-crash.mir
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 5
# RUN: llc -mtriple=armv7-apple-ios --run-pass=branch-folder %s -o - | FileCheck %s
## We hoist code from successor blocks, and in abnormal circumstances we can
## have control flow that branches to the same block. Test we handle that
## correctly.
##
## bb.5 (empty fall-through) folds into bb.6, making bb.2 branch to bb.6
## unconditionally on a conditional branch (both edges go to bb.6).
## Instructions are hosited from bb.2's successors, which is bb.6 twice,
## along both edges.
...
---
name: f_1418_2054
tracksRegLiveness: true
noPhis: true
isSSA: false
noVRegs: true
body: |
; CHECK-LABEL: name: f_1418_2054
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.1(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: successors: %bb.1(0x40000000), %bb.2(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: $r0 = MOVr undef $r0, 14 /* CC::al */, $noreg, $noreg
; CHECK-NEXT: Bcc %bb.1, 1 /* CC::ne */, undef $cpsr
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2:
; CHECK-NEXT: successors: %bb.3(0x40000000), %bb.4(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: $r0 = MOVr undef $r0, 14 /* CC::al */, $noreg, $noreg
; CHECK-NEXT: Bcc %bb.4, 1 /* CC::ne */, undef $cpsr
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.3:
; CHECK-NEXT: BX_RET 14 /* CC::al */, $noreg
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.4:
; CHECK-NEXT: TRAP
bb.0:
successors: %bb.1
bb.1:
successors: %bb.3, %bb.2
Bcc %bb.3, 1, undef $cpsr
B %bb.2
bb.2:
successors: %bb.5, %bb.6
Bcc %bb.5, 1, undef $cpsr
B %bb.6
bb.3:
successors: %bb.4
$r0 = MOVr undef $r0, 14, $noreg, $noreg
bb.4:
successors: %bb.1
B %bb.1
bb.5:
successors: %bb.6
bb.6:
successors: %bb.8, %bb.7
$r0 = MOVr undef $r0, 14, $noreg, $noreg
$r0 = MOVr undef $r0, 14, $noreg, $noreg
Bcc %bb.7, 1, undef $cpsr
B %bb.8
bb.7:
successors:
TRAP
bb.8:
BX_RET 14, _
...