[CodeGen] Fix string literal address space casting.

Summary:
- If a string literal is reused directly, need to add necessary address
  space casting if the target requires that.

Reviewers: yaxunl

Subscribers: jvesely, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D58509

llvm-svn: 354610

1 files changed, 7 insertions, 1 deletions

diff --git a/clang/test/CodeGenCXX/amdgcn-string-literal.cpp b/clang/test/CodeGenCXX/amdgcn-string-literal.cpp
index 70be249433f..31480771653 100644
--- a/clang/test/CodeGenCXX/amdgcn-string-literal.cpp
+++ b/clang/test/CodeGenCXX/amdgcn-string-literal.cpp
@@ -14,7 +14,7 @@ void g(const char* p);
 // CHECK-LABEL: define void @_Z1fv()
 void f() {
   const char* l_str = "l_str";
-  
+
   // CHECK: call void @llvm.memcpy.p0i8.p4i8.i64
   char l_array[] = "l_array";
 
@@ -26,3 +26,9 @@ void f() {
   const char* p = g_str;
   g(p);
 }
+
+// CHECK-LABEL: define void @_Z1ev
+void e() {
+  g("string literal");
+  g("string literal");
+}