Imported Upstream version 5.18.0.205

Former-commit-id: 7f59f7e792705db773f1caecdaa823092f4e2927

external/llvm/test/Transforms/GlobalOpt/2008-07-17-addrspace.ll

@@ -0,0 +1,28 @@
+; This test lets globalopt split the global struct and array into different
+; values. This used to crash, because globalopt forgot to put the new var in the
+; same address space as the old one.
+
+; RUN: opt < %s -globalopt -S | FileCheck %s
+
+; Check that the new global values still have their address space
+; CHECK: addrspace(1) global
+; CHECK: addrspace(1) global
+
+@struct = internal addrspace(1) global { i32, i32 } zeroinitializer
+@array = internal addrspace(1) global [ 2 x i32 ] zeroinitializer 
+
+define i32 @foo() {
+  %A = load i32, i32 addrspace(1) * getelementptr ({ i32, i32 }, { i32, i32 } addrspace(1) * @struct, i32 0, i32 0)
+  %B = load i32, i32 addrspace(1) * getelementptr ([ 2 x i32 ], [ 2 x i32 ] addrspace(1) * @array, i32 0, i32 0)
+  ; Use the loaded values, so they won't get removed completely
+  %R = add i32 %A, %B
+  ret i32 %R
+}
+
+; We put stores in a different function, so that the global variables won't get
+; optimized away completely.
+define void @bar(i32 %R) {
+  store i32 %R, i32 addrspace(1) * getelementptr ([ 2 x i32 ], [ 2 x i32 ] addrspace(1) * @array, i32 0, i32 0)
+  store i32 %R, i32 addrspace(1) * getelementptr ({ i32, i32 }, { i32, i32 } addrspace(1) * @struct, i32 0, i32 0)
+  ret void
+}