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TheRock/compiler/amd-llvm/llvm/test/Transforms/SimplifyCFG/pr46638.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

46 lines
1.3 KiB
LLVM

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -passes=simplifycfg -simplifycfg-require-and-preserve-domtree=1 < %s | FileCheck %s
define void @pr46638(i1 %c, i32 %x) {
; CHECK-LABEL: @pr46638(
; CHECK-NEXT: [[CMP1:%.*]] = icmp slt i32 [[X:%.*]], 0
; CHECK-NEXT: call void @llvm.assume(i1 [[CMP1]])
; CHECK-NEXT: br i1 [[C:%.*]], label [[TRUE2_CRITEDGE:%.*]], label [[FALSE1:%.*]]
; CHECK: false1:
; CHECK-NEXT: call void @dummy(i32 1)
; CHECK-NEXT: [[CMP2:%.*]] = icmp sgt i32 [[X]], 0
; CHECK-NEXT: [[EXT:%.*]] = zext i1 [[CMP2]] to i32
; CHECK-NEXT: call void @dummy(i32 [[EXT]])
; CHECK-NEXT: br label [[COMMON_RET:%.*]]
; CHECK: common.ret:
; CHECK-NEXT: ret void
; CHECK: true2.critedge:
; CHECK-NEXT: call void @dummy(i32 0)
; CHECK-NEXT: call void @dummy(i32 2)
; CHECK-NEXT: br label [[COMMON_RET]]
;
%cmp1 = icmp slt i32 %x, 0
call void @llvm.assume(i1 %cmp1)
br i1 %c, label %true1, label %false1
true1:
%cmp2 = icmp sgt i32 %x, 0
%ext = zext i1 %cmp2 to i32
call void @dummy(i32 %ext)
br i1 %c, label %true2, label %false2
false1:
call void @dummy(i32 1)
br label %true1
true2:
call void @dummy(i32 2)
ret void
false2:
ret void
}
declare void @dummy(i32)
declare void @llvm.assume(i1)