On 06/13/13 12:06, Marc Glisse wrote:
Hello,an incredibly suprising patch: I am adapting yet more fold-const transformations to vectors... (it varies, the last patch was in forwprop) I was quite conservative with respect to complex: I didn't want to create a BIT_NOT_EXPR of a complex. As an aside, while writing this patch, I noticed the following: double f(double x){ return -2*x; } double g(double x){ return 2*-x; } generates mulsd for f and xorpd+addsd for g, I should probably file a PR about that, the running time may be similar but it is better to canonicalize. 2013-06-14 Marc Glisse <marc.gli...@inria.fr> gcc/ * fold-const.c (negate_expr_p): Handle VECTOR_CST. (fold_negate_expr): Likewise. (fold_real_zero_addition_p): Handle vectors. (fold_binary_loc) <PLUS_EXPR, MINUS_EXPR>: Likewise. gcc/testsuite/ * gcc.dg/fold-minus-1.c: New testcase.
This is good. Please install. Thanks, Jeff
