[Bug rtl-optimization/93088] [10 Regression] Compile time hog on gcc/testsuite/gcc.target/i386/pr56348.c w/ -O3 -funroll-loops -fno-tree-dominator-opts -fno-tree-vrp

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93088

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Jan  3 09:10:13 2020
New Revision: 279854

URL: https://gcc.gnu.org/viewcvs?rev=279854&root=gcc&view=rev
Log:
        PR rtl-optimization/93088
        * loop-iv.c (find_single_def_src): Punt after looking through
        128 reg copies for regs with single definitions.  Move definitions
        to first uses.

        * gcc.target/i386/pr93088.c: New test.

Added:
    trunk/gcc/testsuite/gcc.target/i386/pr93088.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/loop-iv.c
    trunk/gcc/testsuite/ChangeLog