[Bug target/57018] [4.8/4.9 Regression] Miscompilation of bison 2.7.1 under "-Os -fomit-frame-pointer"

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57018

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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           Priority|P3                          |P1

--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> 2013-04-22 08:47:09 UTC ---
BTW, with reload on current trunk, bar has identical code, except for the right
leal 32(%esp), %esi instead of the wrong leal 16(%esp), %esi.

It seems that with reload, elimination_effects is called both during IRA costs
analysis and later on during actual elimination, while with LRA only IRA costs
analysis calls it.  And I don't see code in lra-eliminations.c that would
adjust ep->offset based on say sp adjustments in the code.