33 lines
887 B
LLVM
33 lines
887 B
LLVM
; RUN: opt < %s -loop-unswitch -indvars -disable-output
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; Require SCEV before LCSSA.
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define void @foo() {
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entry:
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%i = alloca i32, align 4 ; <i32*> [#uses=5]
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%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
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store i32 0, i32* %i, align 4
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br label %bb3
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bb: ; preds = %bb3
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%tmp = load i32, i32* %i, align 4 ; <i32> [#uses=1]
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call void @bar( i32 %tmp )
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%tmp1 = load i32, i32* %i, align 4 ; <i32> [#uses=1]
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%tmp2 = add i32 %tmp1, 1 ; <i32> [#uses=1]
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store i32 %tmp2, i32* %i, align 4
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br label %bb3
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bb3: ; preds = %bb, %entry
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%tmp4 = load i32, i32* %i, align 4 ; <i32> [#uses=1]
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%tmp5 = icmp sle i32 %tmp4, 9 ; <i1> [#uses=1]
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%tmp56 = zext i1 %tmp5 to i8 ; <i8> [#uses=1]
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%toBool = icmp ne i8 %tmp56, 0 ; <i1> [#uses=1]
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br i1 %toBool, label %bb, label %bb7
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bb7: ; preds = %bb3
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br label %return
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return: ; preds = %bb7
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ret void
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}
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declare void @bar(i32)
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