Imported Upstream version 5.18.0.161

Former-commit-id: 4db48158d3a35497b8f118ab21b5f08ac3d86d98

external/llvm/test/Transforms/JumpThreading/compare.ll

@@ -0,0 +1,30 @@
+; There should be no phi nodes left.
+; RUN: opt < %s -jump-threading  -S | not grep "phi i32"
+
+declare i32 @f1()
+declare i32 @f2()
+declare void @f3()
+
+define i32 @test(i1 %cond) {
+	br i1 %cond, label %T1, label %F1
+
+T1:
+	%v1 = call i32 @f1()
+	br label %Merge
+
+F1:
+	%v2 = call i32 @f2()
+	br label %Merge
+
+Merge:
+	%B = phi i32 [%v1, %T1], [12, %F1]
+	%A = icmp ne i32 %B, 42
+	br i1 %A, label %T2, label %F2
+
+T2:
+	call void @f3()
+	ret i32 1
+
+F2:
+	ret i32 0
+}