forked from OSchip/llvm-project
51 lines
1.8 KiB
LLVM
51 lines
1.8 KiB
LLVM
; RUN: opt < %s -ipsccp -S | FileCheck %s
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; RUN: opt < %s -passes=ipsccp -S | FileCheck %s
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; Test for PR39772
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; CHECK-LABEL: cleanup:
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; CHECK-NEXT: %retval.0 = phi i32 [ 0, %if.then ], [ %add, %if.then7 ], [ %add8, %if.else ]
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%struct.Node = type { %struct.Node*, %struct.Node*, i32 }
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define i32 @check(%struct.Node* %node) {
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entry:
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%cmp = icmp eq %struct.Node* %node, null
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br i1 %cmp, label %if.then, label %if.end
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if.then: ; preds = %entry
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br label %cleanup
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if.end: ; preds = %entry
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%left = getelementptr inbounds %struct.Node, %struct.Node* %node, i32 0, i32 0
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%0 = load %struct.Node*, %struct.Node** %left
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%call = call i32 @check(%struct.Node* %0)
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%right = getelementptr inbounds %struct.Node, %struct.Node* %node, i32 0, i32 1
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%1 = load %struct.Node*, %struct.Node** %right
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%call1 = call i32 @check(%struct.Node* %1)
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%2 = load %struct.Node*, %struct.Node** %right
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%height = getelementptr inbounds %struct.Node, %struct.Node* %2, i32 0, i32 2
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%3 = load i32, i32* %height
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%cmp3 = icmp ne i32 %3, %call1
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br i1 %cmp3, label %if.then4, label %if.end5
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if.then4: ; preds = %if.end
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unreachable
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if.end5: ; preds = %if.end
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%cmp6 = icmp sgt i32 %call, %call1
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br i1 %cmp6, label %if.then7, label %if.else
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if.then7: ; preds = %if.end5
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%add = add nsw i32 %call, 1
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br label %cleanup
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if.else: ; preds = %if.end5
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%add8 = add nsw i32 %call1, 1
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br label %cleanup
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cleanup: ; preds = %if.else, %if.then7, %if.then
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%retval.0 = phi i32 [ 0, %if.then ], [ %add, %if.then7 ], [ %add8, %if.else ]
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ret i32 %retval.0
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}
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