[Bug rtl-optimization/87485] [9 Regression] Compile time hog w/ -O2 -fschedule-insns -fno-guess-branch-probability -fno-isolate-erroneous-paths-dereference -fno-omit-frame-pointer -fno-split-wide-types -fno-tree-ccp -fno-tree-sra

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87485

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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           Priority|P3                          |P1

--- Comment #24 from Richard Biener <rguenth at gcc dot gnu.org> ---
IIRC we used to say sth like "unable to find a register to spill" for
-fschedule-insns introduced issues.  Even the ICE with max. number of
LRA passes is nicer than compiling indefinitely.

So I wonder if we can at least avoid endless work in IRA/LRA and
maybe even give a sensible hint to the user (try disabling -fschedule-insns).