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[codegen] Add multiple operands and function support when using fp16 compilation #4056

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merged 7 commits into from
Oct 11, 2019
Merged

[codegen] Add multiple operands and function support when using fp16 compilation #4056

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e6ece4c
overload half operators for cuda codegen
Oct 3, 2019
49044db
add float16 te test_op_level1
Oct 3, 2019
d85f452
fix test_op_level1.py
Oct 3, 2019
47902c4
fix lint
Oct 4, 2019
66014b4
disable fp16 test if gpu does not support
Oct 7, 2019
c20a7cc
disable fp16 test if gpu does not support
Oct 7, 2019
dc378fe
bypass float16 test if gpu does not support float16
Oct 8, 2019
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14 changes: 14 additions & 0 deletions src/codegen/codegen_cuda.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -50,6 +50,20 @@ void CodeGenCUDA::AddFunction(LoweredFunc f) {
std::string CodeGenCUDA::Finish() {
if (enable_fp16_) {
decl_stream << "#include <cuda_fp16.h>\n";
decl_stream << "__device__ half max" \
"(const half a, const half b)\n"
"{\n return __hgt(__half(a), __half(b)) ? a : b;\n}\n";
decl_stream << "__device__ half min(const half a, const half b)\n"
"{\n return __hlt(__half(a), __half(b)) ? a : b;\n}\n";
decl_stream << "__device__ half operator+" \
"(const volatile __half &a, const volatile __half &b)\n"
"{\n return __hadd(a, b);\n}\n";
decl_stream << "__device__ half operator<=" \
"(const volatile __half &a, const volatile __half &b)\n"
"{\n return __hlt(a, b);\n}\n";
decl_stream << "__device__ half operator*" \
"(const volatile __half &a, const volatile __half &b)\n"
"{\n return __hmul(a, b);\n}\n";
}

if (enable_int8_) {
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