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01666bf74b
not merge current bb and succ even if bb's terminator is unconditional branch to succ. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45305 91177308-0d34-0410-b5e6-96231b3b80d8
61 lines
1.7 KiB
LLVM
61 lines
1.7 KiB
LLVM
; RUN: llvm-as < %s | opt -std-compile-opts -disable-output
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target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
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define i32 @bork() {
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entry:
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%retval = alloca i32 ; <i32*> [#uses=2]
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%opt = alloca i32 ; <i32*> [#uses=3]
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%undo = alloca i32 ; <i32*> [#uses=3]
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%tmp = alloca i32 ; <i32*> [#uses=3]
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%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
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store i32 0, i32* %undo, align 4
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br label %bb5
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bb: ; preds = %bb5
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%tmp1 = load i32* %opt, align 4 ; <i32> [#uses=1]
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switch i32 %tmp1, label %bb4 [
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i32 102, label %bb3
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i32 110, label %bb2
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]
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bb2: ; preds = %bb
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store i32 1, i32* %undo, align 4
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br label %bb3
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bb3: ; preds = %bb2, %bb
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br label %bb5
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bb4: ; preds = %bb
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store i32 258, i32* %tmp, align 4
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br label %bb13
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bb5: ; preds = %bb3, %entry
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%tmp6 = call i32 (...)* @foo( ) nounwind ; <i32> [#uses=1]
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store i32 %tmp6, i32* %opt, align 4
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%tmp7 = load i32* %opt, align 4 ; <i32> [#uses=1]
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%tmp8 = icmp ne i32 %tmp7, -1 ; <i1> [#uses=1]
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%tmp89 = zext i1 %tmp8 to i8 ; <i8> [#uses=1]
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%toBool = icmp ne i8 %tmp89, 0 ; <i1> [#uses=1]
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br i1 %toBool, label %bb, label %bb10
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bb10: ; preds = %bb5
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%tmp11 = load i32* %undo, align 4 ; <i32> [#uses=1]
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%tmp12 = call i32 (...)* @bar( i32 %tmp11 ) nounwind ; <i32> [#uses=0]
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store i32 1, i32* %tmp, align 4
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br label %bb13
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bb13: ; preds = %bb10, %bb4
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%tmp14 = load i32* %tmp, align 4 ; <i32> [#uses=1]
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store i32 %tmp14, i32* %retval, align 4
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br label %return
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return: ; preds = %bb13
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%retval15 = load i32* %retval ; <i32> [#uses=1]
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ret i32 %retval15
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}
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declare i32 @foo(...)
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declare i32 @bar(...)
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