Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

external/llvm-project/llvm/test/Transforms/SCCP/comdat-ipo.ll

@@ -0,0 +1,28 @@
+; RUN: opt < %s -ipsccp -S | FileCheck %s
+
+; See PR26774
+
+define i32 @baz() {
+  ret i32 10
+}
+
+; We can const-prop @baz's return value *into* @foo, but cannot
+; constprop @foo's return value into bar.
+
+define linkonce_odr i32 @foo() {
+; CHECK-LABEL: @foo(
+; CHECK-NEXT:  %val = call i32 @baz()
+; CHECK-NEXT:  ret i32 10
+
+  %val = call i32 @baz()
+  ret i32 %val
+}
+
+define i32 @bar() {
+; CHECK-LABEL: @bar(
+; CHECK-NEXT:  %val = call i32 @foo()
+; CHECK-NEXT:  ret i32 %val
+
+  %val = call i32 @foo()
+  ret i32 %val
+}