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