http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60604
--- Comment #1 from Steve Ellcey <sje at gcc dot gnu.org> --- Created attachment 32428 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=32428&action=edit New reduced test case Here is a new reduced test case that calls no libm functions. I am pretty sure that the bug is in the handling of __builtin_fabs and specifically in expand_absneg_bit where we use the MIPS exp instruction to genreate a floating point absolute value. I am not sure exactly what the problem is, but if I have this routine always return NULL_RTX and use a differentr method of computing a floating point absolute value then my program works. I thought it might be a simulator issue since I do most of my testing with qemu but I ran the executable on hardware and got failures there. The new reduced test case prints with -O0 or -O1 prints: x = 0.634964 1.298458 In __csinh(1), 0.634964 1.29846 In __csinh(2), 0.634964 1.29846 x = 0.000000 0.000000 With -O2 or -O3 it prints: x = 0.634964 1.298458 In __csinh(1), 0.634964 1.29846 In __csinh(2), 1.00959e+116 1.29846 In if statement x = 0.000000 0.000000
