[PATCH] Enhance initial global ranges.
Andrew MacLeod
amacleod@redhat.com
Fri May 7 19:02:33 GMT 2021
Add some tweaks to gimple_range_global () that
1) incorporates code from vr-values to pick up initial parameter values
from IPA,
2) used before defined locals start with UNDEFINED instead of varying.
This makes a big difference when folding PHI nodes.
Bootstraps on x86_64-pc-linux-gnu with no testsuite regressions.
Pushed.
Andrew
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