1 files changed, 24 insertions, 0 deletions
diff --git a/test/CodeGen/ARM/2011-11-30-MergeAlignment.ll b/test/CodeGen/ARM/2011-11-30-MergeAlignment.ll
new file mode 100644
index 0000000..0c90f4c
--- /dev/null
+++ b/test/CodeGen/ARM/2011-11-30-MergeAlignment.ll
@@ -0,0 +1,24 @@
+; RUN: llc < %s | FileCheck %s
+; <rdar://problem/10497732>
+
+target datalayout = "e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:32:64-v128:32:128-a0:0:32-n32"
+target triple = "thumbv7-apple-darwin10"
+
+@x1 = internal global i32 1
+@x2 = internal global i64 12
+
+define i64 @f() {
+  %ax = load i32* @x1
+  %a = zext i32 %ax to i64
+  %b = load i64* @x2
+  %c = add i64 %a, %b
+  ret i64 %c
+}
+
+; We can global-merge the i64 in theory, but the current code doesn't handle
+; the alignment correctly; for the moment, just check that we don't do it.
+; See also 
+
+; CHECK-NOT: MergedGlobals
+; CHECK: _x2
+; CHECK-NOT: MergedGlobals