Imported Upstream version 5.18.0.179

Former-commit-id: 67aa10e65b237e1c4537630979ee99ebe1374215

external/llvm/test/Transforms/SCCP/apint-basictest.ll

@@ -0,0 +1,16 @@
+; This is a basic sanity check for constant propagation.  The add instruction
+; should be eliminated.
+
+; RUN: opt < %s -sccp -S | not grep add
+
+define i128 @test(i1 %B) {
+	br i1 %B, label %BB1, label %BB2
+BB1:
+	%Val = add i128 0, 1
+	br label %BB3
+BB2:
+	br label %BB3
+BB3:
+	%Ret = phi i128 [%Val, %BB1], [2, %BB2]
+	ret i128 %Ret
+}