Imported Upstream version 5.18.0.161

Former-commit-id: 4db48158d3a35497b8f118ab21b5f08ac3d86d98

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

@@ -0,0 +1,38 @@
+; 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: @g1 = global i32 99
+; CHECK0: @c1Alias = external global i8
+; CHECK0: @g1Alias = internal alias i8, bitcast (i32* @g1 to i8*)
+
+; CHECK1: @g1 = external global i32
+; CHECK1: @c1Alias = internal alias i8, inttoptr (i64 42 to i8*)
+
+; Third file is actually empty.
+; CHECK2: @g1 = external global i32
+; CHECK2: @g1Alias = external global i8
+; CHECK2: @c1Alias = external global i8
+
+@g1 = global i32 99
+
+@g1Alias = internal alias i8, bitcast (i32* @g1 to i8*)
+@c1Alias = internal alias i8, inttoptr (i64 42 to i8*)
+@funExternalAlias = alias i8 (), i8 ()* @funExternal
+
+define i8 @funExternal() {
+entry:
+  %x = load i8, i8* @g1Alias
+  ret i8 %x
+}
+
+define i8 @funExternal2() {
+entry:
+  %x = load i8, i8* @c1Alias
+  %y = call i8 @funExternalAlias()
+  %z = add i8 %x, %y
+  ret i8 %z
+}