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The builtins library of compiler-rt is a performance HOG^WKILLER
2018 Dec 03
3
The builtins library of compiler-rt is a performance HOG^WKILLER
...16-bit "digits" JFTR: I haven't checked whether clang actually calls these SUPERFLUOUS routines listed above. IT BETTER SHOULD NOT, NEVER! __divdi3 (37 instructions) calls __udivmoddi4 (254 instructions) __moddi3 (51 instructions) calls __udivmoddi4 (254 instructions) __divmoddi4 (36 instructions) calls __divdi3 (37 instructions) which calls __udivmoddi4 (254 instructions) __udivdi3 (8 instructions) calls __udivmoddi4 (254 instructions) __umoddi3 (33 instructions) calls __udivmoddi4 (254 instructions) JFTR: the subdirectory compiler-rt/lib/bui...
The builtins library of compiler-rt is a performance HOG^WKILLER
2018 Dec 03
3
The builtins library of compiler-rt is a performance HOG^WKILLER
...cked whether clang actually calls these >> SUPERFLUOUS routines listed above. >> IT BETTER SHOULD NOT, NEVER! >> >> __divdi3 (37 instructions) calls __udivmoddi4 (254 instructions) >> __moddi3 (51 instructions) calls __udivmoddi4 (254 instructions) >> __divmoddi4 (36 instructions) calls __divdi3 (37 instructions) which >> calls __udivmoddi4 (254 instructions) >> __udivdi3 (8 instructions) calls __udivmoddi4 (254 instructions) >> __umoddi3 (33 instructions) calls __udivmoddi4 (254 instructions) >> >&gt...