add a regression for memmove

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31430 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/InstCombine/2007-11-03-Memmove64.ll b/test/Transforms/InstCombine/2007-11-03-Memmove64.ll
new file mode 100644 (file)
index 0000000..b4c3a53
--- /dev/null
+++ b/test/Transforms/InstCombine/2007-11-03-Memmove64.ll
@@ -0,0 +1,18 @@
+;RUN: llvm-as < %s | opt -instcombine | llvm-dis |not grep memmove.i32
+; Instcombine was trying to turn this into a memmove.i32
+
+target datalayout = "e-p:64:64"
+target endian = little
+target pointersize = 64
+target triple = "alphaev67-unknown-linux-gnu"
+%str10 = internal constant [1 x sbyte] zeroinitializer         ; <[1 x sbyte]*> [#uses=1]
+
+implementation   ; Functions:
+
+void %do_join(sbyte* %b) {
+entry:
+       call void %llvm.memmove.i64( sbyte* %b, sbyte* getelementptr ([1 x sbyte]* %str10, int 0, ulong 0), ulong 1, uint 1 )
+       ret void
+}
+
+declare void %llvm.memmove.i64(sbyte*, sbyte*, ulong, uint)