diff options
Diffstat (limited to 'llvm/lib/Transforms/Instrumentation/AddressSanitizer.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Instrumentation/AddressSanitizer.cpp | 11 |
1 files changed, 2 insertions, 9 deletions
diff --git a/llvm/lib/Transforms/Instrumentation/AddressSanitizer.cpp b/llvm/lib/Transforms/Instrumentation/AddressSanitizer.cpp index 7648352d0b9..f2b5179b436 100644 --- a/llvm/lib/Transforms/Instrumentation/AddressSanitizer.cpp +++ b/llvm/lib/Transforms/Instrumentation/AddressSanitizer.cpp @@ -204,13 +204,10 @@ static cl::opt<bool> ClSkipPromotableAllocas( // These flags allow to change the shadow mapping. // The shadow mapping looks like -// Shadow = (Mem >> scale) + offset +// Shadow = (Mem >> scale) + (1 << offset_log) static cl::opt<int> ClMappingScale("asan-mapping-scale", cl::desc("scale of asan shadow mapping"), cl::Hidden, cl::init(0)); -static cl::opt<uint64_t> ClMappingOffset("asan-mapping-offset", - cl::desc("offset of asan shadow mapping [EXPERIMENTAL]"), - cl::Hidden, cl::init(0)); // Optimization flags. Not user visible, used mostly for testing // and benchmarking the tool. @@ -407,14 +404,10 @@ static ShadowMapping getShadowMapping(Triple &TargetTriple, int LongSize, } Mapping.Scale = kDefaultShadowScale; - if (ClMappingScale.getNumOccurrences() > 0) { + if (ClMappingScale) { Mapping.Scale = ClMappingScale; } - if (ClMappingOffset.getNumOccurrences() > 0) { - Mapping.Offset = ClMappingOffset; - } - // OR-ing shadow offset if more efficient (at least on x86) if the offset // is a power of two, but on ppc64 we have to use add since the shadow // offset is not necessary 1/8-th of the address space. On SystemZ, |
