r175821 - in /trunk/gcc: ChangeLog simplify-rtx...

Mon Jul 4 18:53:00 GMT 2011

Author: jakub
Date: Mon Jul  4 18:53:56 2011
New Revision: 175821

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=175821
Log:
	PR rtl-optimization/49472
	* simplify-rtx.c (simplify_unary_operation_1) <case NEG>: When
	negating MULT, negate the second operand instead of first.
	(simplify_binary_operation_1) <case MULT>: If one operand is
	a NEG and the other is MULT, don't attempt to optimize by
	negation of the MULT operand if it only moves the NEG operation
	around.

	* gfortran.dg/pr49472.f90: New test.

Added:
    trunk/gcc/testsuite/gfortran.dg/pr49472.f90
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/simplify-rtx.c
    trunk/gcc/testsuite/ChangeLog