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Enable option to disable optimization of 6502 assembly

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- narrow down bug for optimized -O0 for 2d array writes
This commit is contained in:
Jason Turner
2021-05-19 22:15:14 -06:00
parent 49cf9cc32d
commit 61e3609f47
2 changed files with 54 additions and 21 deletions
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23
src/6502-c++.cpp
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@@ -861,7 +861,7 @@ bool fix_long_branches(std::vector<mos6502> &instructions, int &branch_patch_cou
}
std::vector<mos6502> run(const Personality &personality, std::istream &input)
std::vector<mos6502> run(const Personality &personality, std::istream &input, const bool do_optimize)
{
std::regex Comment(R"(\s*(\#|;)(.*))");
std::regex Label(R"(^\s*(\S+):.*)");
@@ -1038,8 +1038,19 @@ std::vector<mos6502> run(const Personality &personality, std::istream &input)
}
}
while (optimize(new_instructions, personality)) {
// do it however many times it takes
if (do_optimize) {
spdlog::info("Running optimization passes");
int count = 0;
while (optimize(new_instructions, personality)) {
// do it however many times it takes
++count;
}
spdlog::info("Optimization passes run: {}", count);
} else {
spdlog::info("Optimization passes disabled");
}
int branch_patch_count = 0;
@@ -1060,6 +1071,7 @@ int main(const int argc, const char **argv)
std::filesystem::path filename{};
Target target{ Target::C64 };
bool optimize{true};
app.add_option("-f,--file", filename, "C++ file to compile")->required(true);
app.add_option("-t,--target", target, "6502 - based system to target")
@@ -1070,6 +1082,9 @@ int main(const int argc, const char **argv)
app.add_option("-O", optimization_level, "Optimization level to pass to GCC instance")
->required(true)
->check(CLI::IsMember({ "s", "0", "1", "2", "3" }));
app.add_flag("--optimize", optimize, "Enable optimization of 6502 generated assembly")
->default_val(true);
CLI11_PARSE(app, argc, argv)
@@ -1113,7 +1128,7 @@ int main(const int argc, const char **argv)
C64 personality;
const auto new_instructions = run(personality, input);
const auto new_instructions = run(personality, input, optimize);
{
// make sure file is closed before we try to re-open it with xa