[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

[cvs-commit at gcc dot gnu.org]

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

--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-9 branch has been updated by Jakub Jelinek
<jakub@gcc.gnu.org>:

https://gcc.gnu.org/g:75cdf669074fe6a49ea6a3582acf54d00acfa9ce

commit r9-8159-g75cdf669074fe6a49ea6a3582acf54d00acfa9ce
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Wed Jan 22 17:48:48 2020 +0100

    re PR rtl-optimization/93088 (Compile time hog on
gcc/testsuite/gcc.target/i386/pr56348.c w/ -O3 -funroll-loops
-fno-tree-dominator-opts -fno-tree-vrp)

        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.