[LLVMdev] LLVM compile speed significantly slower than GCC (w/ test case)

Chandler Carruth chandlerc at google.com
Thu Jul 19 16:03:37 PDT 2012


I'm looking into why.

For me -O0 is about 4x faster w/ Clang, but -O2 is 2x slower. I'll update
after a pleliminary analysis. Note that this is comparing against gcc 4.6.2.
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