51 lines
1.3 KiB
LLVM
51 lines
1.3 KiB
LLVM
; RUN: opt < %s -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S | FileCheck %s
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; RUN: opt < %s -passes=simplifycfg -S | FileCheck %s
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define i32 @foo(i32 %x) optforfuzzing {
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entry:
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%x.addr = alloca i32, align 4
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store i32 %x, i32* %x.addr, align 4
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%0 = load i32, i32* %x.addr, align 4
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%cmp = icmp sgt i32 %0, 16
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br i1 %cmp, label %land.rhs, label %land.end
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land.rhs:
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%1 = load i32, i32* %x.addr, align 4
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%cmp1 = icmp slt i32 %1, 32
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br label %land.end
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land.end:
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%2 = phi i1 [ false, %entry ], [ %cmp1, %land.rhs ]
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%conv = zext i1 %2 to i32
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ret i32 %conv
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; CHECK-LABEL: define i32 @foo(i32 %x)
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; CHECK: br i1 %cmp, label %land.rhs, label %land.end
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; CHECK-LABEL: land.rhs:
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; CHECK: br label %land.end
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; CHECK-LABEL: land.end:
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; CHECK: phi {{.*}} %entry {{.*}} %land.rhs
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}
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define i32 @bar(i32 %x) {
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entry:
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%x.addr = alloca i32, align 4
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store i32 %x, i32* %x.addr, align 4
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%0 = load i32, i32* %x.addr, align 4
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%cmp = icmp sgt i32 %0, 16
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br i1 %cmp, label %land.rhs, label %land.end
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land.rhs:
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%1 = load i32, i32* %x.addr, align 4
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%cmp1 = icmp slt i32 %1, 32
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br label %land.end
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land.end:
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%2 = phi i1 [ false, %entry ], [ %cmp1, %land.rhs ]
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%conv = zext i1 %2 to i32
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ret i32 %conv
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; CHECK-LABEL: define i32 @bar(i32 %x)
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; CHECK-NOT: br
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}
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