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TheRock/compiler/amd-llvm/llvm/test/Transforms/SimplifyCFG/two-entry-phi-fold-crash.ll
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derek.holloway 7502bf64a4
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

44 lines
1.7 KiB
LLVM

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -S -passes=simplifycfg -simplifycfg-require-and-preserve-domtree=1 2>&1 | FileCheck %s
declare i32 @blam(ptr, i32)
define i32 @wibble(ptr %arg, ptr %arg1) {
; CHECK-LABEL: @wibble(
; CHECK-NEXT: bb:
; CHECK-NEXT: br label [[BB2:%.*]]
; CHECK: bb2:
; CHECK-NEXT: [[BORG:%.*]] = phi i32 [ 0, [[BB:%.*]] ], [ [[BORG]], [[BB2]] ]
; CHECK-NEXT: [[BORG3:%.*]] = phi i32 [ 8, [[BB]] ], [ [[SPEC_SELECT:%.*]], [[BB2]] ]
; CHECK-NEXT: [[BORG4:%.*]] = tail call i32 @blam(ptr [[ARG:%.*]], i32 [[BORG]])
; CHECK-NEXT: [[BORG5:%.*]] = icmp eq i32 [[BORG4]], 0
; CHECK-NEXT: [[SPEC_SELECT]] = select i1 [[BORG5]], i32 [[BORG3]], i32 [[BORG4]]
; CHECK-NEXT: [[BORG11:%.*]] = icmp ult i32 [[BORG]], 2
; CHECK-NEXT: br i1 [[BORG11]], label [[BB2]], label [[BB12:%.*]]
; CHECK: bb12:
; CHECK-NEXT: ret i32 1
;
bb:
br label %bb2
bb2: ; preds = %bb8, %bb
%borg = phi i32 [ 0, %bb ], [ %borg9, %bb8 ]
%borg3 = phi i32 [ 8, %bb ], [ %borg10, %bb8 ]
%borg4 = tail call i32 @blam(ptr %arg, i32 %borg)
%borg5 = icmp eq i32 %borg4, 0
br i1 %borg5, label %bb8, label %bb6
bb6: ; preds = %bb2
%borg7 = load ptr, ptr %arg1, align 4
br label %bb8
bb8: ; preds = %bb6, %bb2
%borg9 = phi i32 [ %borg, %bb6 ], [ %borg, %bb2 ]
%borg10 = phi i32 [ %borg4, %bb6 ], [ %borg3, %bb2 ]
%borg11 = icmp ult i32 %borg9, 2
br i1 %borg11, label %bb2, label %bb12
bb12: ; preds = %bb8
ret i32 1
}