Question

在与地兰进行汇编时,我可以添加<条码>optnone。

[[clang::optnone]]
void foo() {
    // no optimizations applied in here
    ...
}

void bar() {
    // while other functions are still optimized
}

在与亚洲开发银行脱钩时,这确实是有益的。关于规模太大、无法完全以减速方式编纂的方案(llvm),我可以编篡将CMake编成RelWithDebInfo,增加一些感兴趣的职能,然后在这些地方进行持续的减小,而不必绕过和打上线的价值观。

Is there any equivalent way to compile all functions in a given file in debug mode, without manually adding the attribute to every function?

Cheers

Answer 1

你有几种选择:

Compile your source files individually to object files (this is automatically done with most build setups); then for your particular object file, set custom optimization settings. For example:

cc -O3 file1.c -c -o file1.o
cc -O0 -g file2.c -c -o file2.o

只优化<代码>file1.c,但不能优化file2.c。这一工作面向任何汇编者。

Use a range-based optimization pragma, a Clang extension. Write #pragma clang optimize off to disable optimizations from that point onward, and #pragma clang optimize on to reenable them. For example, simply putting #pragma clang optimize off at the top of the file will disable optimizations for the entire file.