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[DRIVER] Added options for developers to cache PTX file so that ti can

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be manually modified
This commit is contained in:
Philippe Tillet
2021-02-09 00:09:10 -05:00
parent 5e3c7f5a60
commit 3ca40b05cf
3 changed files with 32 additions and 5 deletions
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29
lib/driver/module.cc
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@@ -26,6 +26,9 @@
#include "triton/driver/module.h"
#include "triton/driver/context.h"
#include "triton/driver/error.h"
#include "triton/tools/sha1.hpp"
#include "triton/tools/sys/getenv.hpp"
#include "triton/tools/sys/mkdir.hpp"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/Verifier.h"
#include "llvm/IR/IRPrintingPasses.h"
@@ -346,7 +349,31 @@ cu_module::cu_module(driver::device* device, std::unique_ptr<llvm::Module> ll_mo
llvm::raw_string_ostream oss(llir_);
oss << *ll_module;
oss.flush();
ptx_ = compile_llvm_module(std::move(ll_module), device);
std::string cache_path = tools::getenv("TRITON_DEBUG_CACHE_PATH");
if(cache_path.empty())
ptx_ = compile_llvm_module(std::move(ll_module), device);
else{
tools::mkdir(cache_path);
// update cache path to PTX file
unsigned char hash[20];
sha1::calc((void*)llir_.data(), llir_.size(), hash);
char _hex[40];
sha1::toHexString(hash, _hex);
std::string hex(_hex, _hex + 40);
cache_path += "/" + hex;
// read
std::ifstream ifs(cache_path);
std::ostringstream _ptx;
if(ifs)
_ptx << ifs.rdbuf();
ptx_ = _ptx.str();
// compile and write-back if read empty
if(ptx_.empty()){
ptx_ = compile_llvm_module(std::move(ll_module), device);
std::ofstream ofs(cache_path);
ofs << ptx_;
}
}
init_from_ptx(ptx_);
}