Simon Pilgrim 940061438e [InstCombine] Fold (mul(abs(x),abs(x))) -> (mul(x,x)) (PR39476)
This patch adds support for discarding integer absolutes (abs + nabs variants) from self-multiplications.

ABS Alive2: http://volta.cs.utah.edu:8080/z/rwcc8W
NABS Alive2: http://volta.cs.utah.edu:8080/z/jZXUwQ

This is an InstCombine version of D79304 - I'm not sure yet if we'll need that after this.

Reviewed By: @lebedev.ri and @xbolva00

Differential Revision: https://reviews.llvm.org/D79319
2020-05-04 15:21:52 +01:00
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This directory contains test cases for the instcombine transformation.  The
dated tests are actual bug tests, whereas the named tests are used to test
for features that the this pass should be capable of performing.