http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58158
--- Comment #7 from Aaro Koskinen <aaro.koskinen at iki dot fi> ---
Loongson 2F is MIPS III + movz/movn only. I am currently running my compiler
with the below workaround, and it seems to help:
--- gcc-4.8.1.orig/gcc/config/mips/mips.md 2013-02-25 15:53:16.000000000
+0200
+++ gcc-4.8.1/gcc/config/mips/mips.md 2013-08-23 23:09:13.000000000 +0300
@@ -6708,20 +6708,23 @@
;; These are the main define_expand's used to make conditional moves.
(define_expand "mov<mode>cc"
[(set (match_dup 4) (match_operand 1 "comparison_operator"))
(set (match_operand:GPR 0 "register_operand")
(if_then_else:GPR (match_dup 5)
(match_operand:GPR 2 "reg_or_0_operand")
(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;
})
(define_expand "mov<mode>cc"
[(set (match_dup 4) (match_operand 1 "comparison_operator"))
(set (match_operand:SCALARF 0 "register_operand")
(if_then_else:SCALARF (match_dup 5)
(match_operand:SCALARF 2 "register_operand")
(match_operand:SCALARF 3 "register_operand")))]
