1 files changed, 48 insertions, 0 deletions
diff --git a/test/CodeGen/X86/fast-isel-emutls.ll b/test/CodeGen/X86/fast-isel-emutls.ll
new file mode 100644
index 0000000000000..cb8012c0fa390
--- /dev/null
+++ b/test/CodeGen/X86/fast-isel-emutls.ll
@@ -0,0 +1,48 @@
+; RUN: llc < %s -emulated-tls -march=x86 -relocation-model=pic -mtriple=i686-unknown-linux-gnu -fast-isel | FileCheck %s
+; PR3654
+
+@v = thread_local global i32 0
+define i32 @f() nounwind {
+entry:
+          %t = load i32, i32* @v
+          %s = add i32 %t, 1
+          ret i32 %s
+}
+
+; CHECK-LABEL: f:
+; CHECK:      movl __emutls_v.v@GOT(%ebx), %eax
+; CHECK-NEXT: movl %eax, (%esp)
+; CHECK-NEXT: calll __emutls_get_address@PLT
+; CHECK-NEXT: movl (%eax), %eax
+
+@alias = internal alias i32, i32* @v
+define i32 @f_alias() nounwind {
+entry:
+          %t = load i32, i32* @v
+          %s = add i32 %t, 1
+          ret i32 %s
+}
+
+; CHECK-LABEL: f_alias:
+; CHECK:      movl __emutls_v.v@GOT(%ebx), %eax
+; CHECK-NEXT: movl %eax, (%esp)
+; CHECK-NEXT: calll __emutls_get_address@PLT
+; CHECK-NEXT: movl (%eax), %eax
+
+; Use my_emutls_get_address like __emutls_get_address.
+@my_emutls_v_xyz = external global i8*, align 4
+declare i8* @my_emutls_get_address(i8*)
+
+define i32 @my_get_xyz() {
+entry:
+  %call = call i8* @my_emutls_get_address(i8* bitcast (i8** @my_emutls_v_xyz to i8*))
+  %0 = bitcast i8* %call to i32*
+  %1 = load i32, i32* %0, align 4
+  ret i32 %1
+}
+
+; CHECK-LABEL: my_get_xyz:
+; CHECK:      movl my_emutls_v_xyz@GOT(%ebx), %eax
+; CHECK-NEXT: movl %eax, (%esp)
+; CHECK-NEXT: calll my_emutls_get_address@PLT
+; CHECK-NEXT: movl (%eax), %eax