new testcase globalopt should implement

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20350 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/GlobalOpt/memcpy.ll b/test/Transforms/GlobalOpt/memcpy.ll
new file mode 100644 (file)
index 0000000..1611c8e
--- /dev/null
+++ b/test/Transforms/GlobalOpt/memcpy.ll
@@ -0,0 +1,16 @@
+; RUN: llvm-as < %s | opt -globalopt | llvm-dis | grep 'G1 = internal constant'
+
+%G1 = internal global [58 x sbyte] c"asdlfkajsdlfkajsd;lfkajds;lfkjasd;flkajsd;lkfja;sdlkfjasd\00"
+
+implementation
+
+declare void %llvm.memcpy(sbyte*, sbyte*, uint, uint)
+
+void %foo() {
+        %Blah = alloca [58 x sbyte]             ; <[58 x sbyte]*> [#uses=2]
+        %tmp.0 = getelementptr [58 x sbyte]* %Blah, int 0, int 0                ; <sbyte*> [#uses=1]
+        call void %llvm.memcpy( sbyte* %tmp.0, sbyte* getelementptr ([58 x sbyte]* %G1, int 0, int 0), uint 58, uint 1 )
+       ret void
+}
+
+