2015-04-24 Thomas Preud'homme <thomas.preudhomme@arm.com>
Steven Bosscher <steven@gcc.gnu.org>
gcc/
PR rtl-optimization/34503
* cprop.c (cprop_reg_p): New.
(hash_scan_set): Use above function to check if register can be
propagated.
(find_avail_set): Return up to two sets, one whose source is a
register and one whose source is a constant. Sets are returned in an
array passed as parameter rather than as a return value.
(cprop_insn): Use a do while loop rather than a goto. Try each of the
sets returned by find_avail_set, starting with the one whose source is
a constant. Use cprop_reg_p to check if register can be propagated.
(do_local_cprop): Use cprop_reg_p to check if register can be
propagated.
(implicit_set_cond_p): Likewise.
gcc/testsuite/
PR rtl-optimization/34503
* gcc.target/arm/pr64616.c: New file.
Co-Authored-By: Steven Bosscher <steven@gcc.gnu.org>
From-SVN: r222398
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