[Bug middle-end/87188] Function pointer canonicalization optimized away

2018-09-14 Thread danglin at gcc dot gnu.org
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87188 --- Comment #26 from John David Anglin --- Author: danglin Date: Fri Sep 14 23:30:32 2018 New Revision: 264337 URL: https://gcc.gnu.org/viewcvs?rev=264337&root=gcc&view=rev Log: PR middle-end/87188 * dojump.c (do_compare_and_jump

[Bug target/87317] New: Missed optimisation: merging VMOVQ with operations that only use the low 8 bytes

2018-09-14 Thread thiago at kde dot org
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87317 Bug ID: 87317 Summary: Missed optimisation: merging VMOVQ with operations that only use the low 8 bytes Product: gcc Version: 8.2.1 Status: UNCONFIRMED Severity

[Bug target/87317] Missed optimisation: merging VMOVQ with operations that only use the low 8 bytes

2018-09-14 Thread glisse at gcc dot gnu.org
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87317 Marc Glisse changed: What|Removed |Added Keywords||missed-optimization Target|

[Bug tree-optimization/87315] uninitialized read from memory returned by malloc not eliminated, no warning

2018-09-14 Thread glisse at gcc dot gnu.org
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87315 --- Comment #1 from Marc Glisse --- There could be 2 steps: - replace the read with an undefined value (SSA_NAME with GIMPLE_NOP defining statement). I vaguely remember someone was not enthusiastic about it, but I don't remember why. - fold a c

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