From: Yang Rong <rong.r.y...@intel.com>
Casting from pointer of char to pointer of int breaks llvm
TypeBasedAliasAnalysis. So we use may_alias attribute to explicitly
tell the TBAA that it may alias other data type memory access.
Signed-off-by: Ruiling Song <ruiling.s...@intel.com>
---
backend/src/libocl/src/ocl_memcpy.cl | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/backend/src/libocl/src/ocl_memcpy.cl
b/backend/src/libocl/src/ocl_memcpy.cl
index 131574d..8c0409a 100644
--- a/backend/src/libocl/src/ocl_memcpy.cl
+++ b/backend/src/libocl/src/ocl_memcpy.cl
@@ -16,12 +16,13 @@
*
*/
#include "ocl_memcpy.h"
+typedef int __attribute__((may_alias)) AI;
#define DECL_TWO_SPACE_MEMCOPY_FN(NAME, DST_SPACE, SRC_SPACE) \
void __gen_memcpy_ ##NAME## _align (DST_SPACE uchar* dst, SRC_SPACE uchar*
src, size_t size) { \
size_t index = 0; \
while((index + 4) <= size) { \
- *((DST_SPACE uint *)(dst + index)) = *((SRC_SPACE uint *)(src + index)); \
+ *((DST_SPACE AI *)(dst + index)) = *((SRC_SPACE AI *)(src + index)); \
index += 4; \
} \
while(index < size) { \
--
2.7.4
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