It's not necessary to do rounding for alloca operations when the requested
alignment is equal to the stack alignment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40004 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Transforms/SimplifyLibCalls/MemCpy.ll b/test/Transforms/SimplifyLibCalls/MemCpy.ll
new file mode 100644
index 0000000..0a99488
--- /dev/null
+++ b/test/Transforms/SimplifyLibCalls/MemCpy.ll
@@ -0,0 +1,22 @@
+; Test that the StrCatOptimizer works correctly
+; RUN: llvm-upgrade < %s | llvm-as | opt -constprop -simplify-libcalls | \
+; RUN: llvm-dis | not grep {call.*llvm.memcpy.i32}
+
+declare void %llvm.memcpy.i32(sbyte*,sbyte*,uint,uint)
+%h = constant [2 x sbyte] c"h\00"
+%hel = constant [4 x sbyte] c"hel\00"
+%hello_u = constant [8 x sbyte] c"hello_u\00"
+
+implementation ; Functions:
+
+int %main () {
+ %h_p = getelementptr [2 x sbyte]* %h, int 0, int 0
+ %hel_p = getelementptr [4 x sbyte]* %hel, int 0, int 0
+ %hello_u_p = getelementptr [8 x sbyte]* %hello_u, int 0, int 0
+ %target = alloca [1024 x sbyte]
+ %target_p = getelementptr [1024 x sbyte]* %target, int 0, int 0
+ call void %llvm.memcpy.i32(sbyte* %target_p, sbyte* %h_p, uint 2, uint 2)
+ call void %llvm.memcpy.i32(sbyte* %target_p, sbyte* %hel_p, uint 4, uint 4)
+ call void %llvm.memcpy.i32(sbyte* %target_p, sbyte* %hello_u_p, uint 8, uint 8)
+ ret int 0
+}