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| author | Yang Rong <rong.r.yang@intel.com> | 2017-10-18 14:57:14 +0800 |
|---|---|---|
| committer | Yang Rong <rong.r.yang@intel.com> | 2017-10-26 13:21:58 +0800 |
| commit | 8714b107cd8794f0818a281dfc56c0e49af05ba1 (patch) | |
| tree | 6ec02b707dffaaf30da98e6b1e41a7816b02eb75 | |
| parent | 7f7dca082e9f7c7c610cf934cba0e7d625f98ea0 (diff) | |
GBE: Fix a TBAA issue against llvm5.0.
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.song@intel.com>
Reviewed-by: Yang Rong <rong.r.yang@intel.com>
| -rw-r--r-- | backend/src/libocl/src/ocl_memcpy.cl | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/backend/src/libocl/src/ocl_memcpy.cl b/backend/src/libocl/src/ocl_memcpy.cl index 131574d9..8c0409a3 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) { \ |