2013/9/24 xunxun: > 400% for the builder, but 10% for the user Yes, you're right. But far as I understood, by 10 percent will be faster only the compiler itself, but not the programs built by it. Is really compilation time reduction by 10 percent so significant? I suggest you to try to build MinGW using PGO+LTO, solve all the problems that you will face, and report the result. After that, I promise to think about adding the corresponding option to the build scripts ;)
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