diff options
Diffstat (limited to 'src/kernel_preprocessor.cpp')
| -rw-r--r-- | src/kernel_preprocessor.cpp | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/kernel_preprocessor.cpp b/src/kernel_preprocessor.cpp index abe0cd76..7271237a 100644 --- a/src/kernel_preprocessor.cpp +++ b/src/kernel_preprocessor.cpp @@ -371,6 +371,25 @@ std::vector<std::string> PreprocessDefinesAndComments(const std::string& source, defines_string.emplace(name, value); } + // Detect #undef macros + // When USE_SUBGROUP_SHUFFLING is set, but kernel parameters do not satisfy the conditions + // for subgroup shuffle, USE_SUBGROUP_SHUFFLING needs to be unset in preprocessing + // to avoid GEMM kernel errors. See src/kernels/level3/xgemm_part1.opencl line 142. + // In this preprocessor, macros are not redefined because of behavior defined by std::map::emplace + const auto undef_pos = line.find("#undef "); + if (undef_pos != std::string::npos) { + const auto undef = line.substr(undef_pos + 7); // length of "#undef " + // checks if definition is found in defines_int and/or defines_string, then removes the definition + auto int_undef = defines_int.find(undef); + if (int_undef != defines_int.end()){ + defines_int.erase(int_undef); + } + auto string_undef = defines_string.find(undef); + if (string_undef != defines_string.end()){ + defines_string.erase(string_undef); + } + } + // Detect #ifndef blocks const auto ifndef_pos = line.find("#ifndef "); if (ifndef_pos != std::string::npos) { |