r261067 - in /branches/gcc-6-branch/gcc: Change...

[wschmidt@gcc.gnu.org]

Author: wschmidt
Date: Fri Jun  1 13:00:57 2018
New Revision: 261067

URL: https://gcc.gnu.org/viewcvs?rev=261067&root=gcc&view=rev
Log:
2018-06-01  Bill Schmidt  <wschmidt@linux.ibm.com>

	PR tree-optimization/85712
	Backport from mainline:
	2018-05-23  Bill Schmidt  <wschmidt@linux.ibm.com>

	PR tree-optimization/85712
	* gimple-ssa-strength-reduction.c (struct slsr_cand_d): Add
	first_interp field.
	(alloc_cand_and_find_basis): Initialize first_interp field.
	(slsr_process_mul): Modify first_interp field.
	(slsr_process_add): Likewise.
	(slsr_process_cast): Modify first_interp field for each new
	interpretation.
	(slsr_process_copy): Likewise.
	(dump_candidate): Dump first_interp field.
	(replace_mult_candidate): Process all interpretations, not just
	subsequent ones.
	(replace_rhs_if_not_dup): Likewise.
	(replace_one_candidate): Likewise.

	Backport from mainline:
	2018-05-25  Bill Schmidt  <wschmidt@linux.ibm.com>

	PR tree-optimization/85712
	* gimple-ssa-strength-reduction.c (replace_one_candidate): Skip if
	this candidate has already been replaced in-situ by a copy.


Modified:
    branches/gcc-6-branch/gcc/ChangeLog
    branches/gcc-6-branch/gcc/gimple-ssa-strength-reduction.c