[PATCH] tree-optimization/101254 - Fix MINUS_EXPR relations.

Andrew MacLeod amacleod@redhat.com
Tue Jun 29 19:10:18 GMT 2021

We were incorrectly calculating the LHS of a MINUS_EXPR for wrapping 
signed values.  This patch cleans that up and fully fleshed out the 
possible LHS of OP1 - OP2 given a known relation between them.

Bootstraps on x86_64-pc-linux-gnu with no regressions.  Pushed.


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