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Author SHA1 Message Date
Andrew Kelley
6b14c58f63 compiler-rt: simplify implementations 
This improves readability as well as compatibility with stage2. Most of
compiler-rt is now enabled for stage2 with just a few functions disabled
(until stage2 passes more behavior tests).
 2022-01-02 13:16:17 -07:00
Jan Philipp Hafer
405ff911da compiler_rt: add __absvsi2, __absvdi2, __absvti2 
- abs can only overflow, if a == MIN
- comparing the sign change from wrapping addition is branchless
- tests: MIN, MIN+1,..MIN+4, -42, -7, -1, 0, 1, 7..

See #1290
 2021-12-26 13:21:18 -08:00