Imported Upstream version 6.0.0.172

Former-commit-id: f3cc9b82f3e5bd8f0fd3ebc098f789556b44e9cd

external/llvm/test/tools/llvm-split/scc-global-alias.ll

@@ -0,0 +1,47 @@
+; We should never separate alias from aliasee.
+; RUN: llvm-split -j=3 -preserve-locals -o %t %s
+; RUN: llvm-dis -o - %t0 | FileCheck --check-prefix=CHECK0 %s
+; RUN: llvm-dis -o - %t1 | FileCheck --check-prefix=CHECK1 %s
+; RUN: llvm-dis -o - %t2 | FileCheck --check-prefix=CHECK2 %s
+
+; Checks are not critical here - verifier will assert if we fail.
+; CHECK0: @funInternal2Alias = alias
+; CHECK0: @funExternal2Alias = alias
+; CHECK0: define internal i32 @funInternal2
+; CHECK0: define i32 @funExternal2
+
+; CHECK1: @funInternalAlias = alias
+; CHECK1: define internal i32 @funInternal
+
+; CHECK2: @funExternalAlias = alias
+; CHECK2: define i32 @funExternal
+
+@funInternalAlias = alias i32 (), i32 ()* @funInternal
+@funExternalAlias = alias i32 (), i32 ()* @funExternal
+@funInternal2Alias = alias i32 (), i32 ()* @funInternal2
+@funExternal2Alias = alias i32 (), i32 ()* @funExternal2
+
+define internal i32 @funInternal() {
+entry:
+  ret i32 0
+}
+
+define i32 @funExternal() {
+entry:
+  %x = call i32 @funInternalAlias()
+  ret i32 %x
+}
+
+define internal i32 @funInternal2() {
+entry:
+  %x = call i32 @funInternalAlias()
+  ret i32 %x
+}
+
+define i32 @funExternal2() {
+entry:
+  %x = call i32 @funInternal2()
+  %y = call i32 @funExternalAlias()
+  %z = add nsw i32 %x, %y
+  ret i32 %z
+}