[Bug tree-optimization/88797] [7/8/9/10 Regression] Unneeded branch added when function is inlined (function runs faster if not inlined)

[law at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88797

--- Comment #8 from Jeffrey A. Law <law at gcc dot gnu.org> ---
Author: law
Date: Wed May  1 17:33:32 2019
New Revision: 270775

URL: https://gcc.gnu.org/viewcvs?rev=270775&root=gcc&view=rev
Log:
        PR tree-optimization/88797
        * gimple-ssa-split-paths (is_feasible_trace): Reject cases where the
        PHI feeds a conditional on the RHS of an assignment.

        PR tree-optimization/88797
        * g++.dg/tree-ssa/pr88797.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/tree-ssa/pr88797.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/gimple-ssa-split-paths.c
    trunk/gcc/testsuite/ChangeLog