http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58158
--- Comment #12 from Tom Li <biergaizi2009 at gmail dot com> --- And I just applied Aaro Koskinen's patch on gcc 4.8.2, recompile gcc and resolve this issue. Patch for 4.8.2: --- gcc-4.8.2/gcc/config/mips/mips.md 2013-02-25 21:53:16.000000000 +0800 +++ gcc-4.8.2-fixed/gcc/config/mips/mips.md 2013-12-31 20:23:26.021484375 +0800 @@ -6715,6 +6715,9 @@ (match_operand:GPR 3 "reg_or_0_operand")))] "ISA_HAS_CONDMOVE" { + if (!ISA_HAS_FP_CONDMOVE && + GET_MODE_CLASS (GET_MODE (XEXP (operands[1], 0))) != MODE_INT) + FAIL; mips_expand_conditional_move (operands); DONE; })