r217945 - in /trunk/gcc: ChangeLog testsuite/Ch...

[jakub@gcc.gnu.org]

Author: jakub
Date: Fri Nov 21 20:41:37 2014
New Revision: 217945

URL: https://gcc.gnu.org/viewcvs?rev=217945&root=gcc&view=rev
Log:
	PR tree-optimization/64006
	* tree-vrp.c (stmt_interesting_for_vrp): Return true
	for {ADD,SUB,MUL}_OVERFLOW internal calls.
	(vrp_visit_assignment_or_call): For {ADD,SUB,MUL}_OVERFLOW
	internal calls, check if any REALPART_EXPR/IMAGPART_EXPR
	immediate uses would change their value ranges and return
	SSA_PROP_INTERESTING if so, or SSA_PROP_NOT_INTERESTING
	if there are some REALPART_EXPR/IMAGPART_EXPR immediate uses
	interesting for vrp.

	* gcc.c-torture/execute/pr64006.c: New test.

Added:
    trunk/gcc/testsuite/gcc.c-torture/execute/pr64006.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vrp.c