[Bug tree-optimization/90106] builtin sqrt() ignoring libm's sqrt call result

[junma at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90106

--- Comment #10 from junma at gcc dot gnu.org ---
Author: junma
Date: Thu May 16 08:21:17 2019
New Revision: 271281

URL: https://gcc.gnu.org/viewcvs?rev=271281&root=gcc&view=rev
Log:
        PR tree-optimization/90106
        * tree-call-cdce.c (shrink_wrap_one_built_in_call_with_conds): Add
        new parameter as new internal function call, also move it to new
        basic block.
        (use_internal_fn): Pass internal function call to
        shrink_wrap_one_built_in_call_with_conds.

        gcc/testsuite
        * gcc.dg/cdce1.c: Check tailcall code generation after cdce pass.
        * gcc.dg/cdce2.c: Likewise.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/cdce1.c
    trunk/gcc/testsuite/gcc.dg/cdce2.c
    trunk/gcc/tree-call-cdce.c