Revert "Change memcpy/memset/memmove to have dest and source alignments."

This reverts commit r253512.

This likely broke the bots in:
http://lab.llvm.org:8011/builders/clang-ppc64-elf-linux2/builds/20202
http://bb.pgr.jp/builders/clang-3stage-i686-linux/builds/3787

llvm-svn: 253542
diff --git a/clang/test/OpenMP/sections_lastprivate_codegen.cpp b/clang/test/OpenMP/sections_lastprivate_codegen.cpp
index dbb49b0..b1d242a 100644
--- a/clang/test/OpenMP/sections_lastprivate_codegen.cpp
+++ b/clang/test/OpenMP/sections_lastprivate_codegen.cpp
@@ -338,7 +338,7 @@
 // original vec[]=private_vec[];
 // CHECK: [[VEC_DEST:%.+]] = bitcast [2 x i{{[0-9]+}}]* [[VEC_REF]] to i8*
 // CHECK: [[VEC_SRC:%.+]] = bitcast [2 x i{{[0-9]+}}]* [[VEC_PRIV]] to i8*
-// CHECK: call void @llvm.memcpy.{{.+}}(i8* align 4 [[VEC_DEST]], i8* align 4 [[VEC_SRC]],
+// CHECK: call void @llvm.memcpy.{{.+}}(i8* [[VEC_DEST]], i8* [[VEC_SRC]],
 
 // original s_arr[]=private_s_arr[];
 // CHECK: [[S_ARR_BEGIN:%.+]] = getelementptr inbounds [2 x [[S_INT_TY]]], [2 x [[S_INT_TY]]]* [[S_ARR_REF]], i{{[0-9]+}} 0, i{{[0-9]+}} 0