[Bug rtl-optimization/69567] PowerPC64: cstore optimisation produces bad code
segher at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Thu Nov 9 10:21:00 GMT 2017
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69567
--- Comment #11 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Author: segher
Date: Thu Nov 9 10:21:06 2017
New Revision: 254564
URL: https://gcc.gnu.org/viewcvs?rev=254564&root=gcc&view=rev
Log:
Backport from mainline
2017-11-01 Segher Boessenkool <segher@kernel.crashing.org>
PR rtl-optimization/64682
PR rtl-optimization/69567
PR rtl-optimization/69737
PR rtl-optimization/82683
* combine.c (distribute_notes) <REG_DEAD>: If the new I2 sets the same
register mentioned in the note, drop the note, unless it came from I3,
in which case it should go to I3 again.
Modified:
branches/gcc-7-branch/gcc/ChangeLog
branches/gcc-7-branch/gcc/combine.c
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