Disable the Maverick's cmpdi instruction which cannot perform the simultaneous signed/unsigned comparison expected by GCC. diff -ruN /home/hwilliams/openembedded/build/tmp/work/ep9312-angstrom-linux-gnueabi/gcc-cross-4.1.2-r0/gcc-4.1.2/gcc/config/arm/arm.md gcc-4.1.2/gcc/config/arm/arm.md --- /home/hwilliams/openembedded/build/tmp/work/ep9312-angstrom-linux-gnueabi/gcc-cross-4.1.2-r0/gcc-4.1.2/gcc/config/arm/arm.md 2006-09-28 03:10:22.000000000 +1000 +++ gcc-4.1.2/gcc/config/arm/arm.md 2007-05-15 09:53:21.000000000 +1000 @@ -7354,10 +7366,12 @@ ) ;; Cirrus DI compare instruction +;; This is disabled and left go through ARM core registers, because currently +;; Crunch coprocessor does only signed comparison. (define_expand "cmpdi" [(match_operand:DI 0 "cirrus_fp_register" "") (match_operand:DI 1 "cirrus_fp_register" "")] - "TARGET_ARM && TARGET_HARD_FLOAT && TARGET_MAVERICK" + "TARGET_ARM && TARGET_HARD_FLOAT && TARGET_MAVERICK & 0" "{ arm_compare_op0 = operands[0]; arm_compare_op1 = operands[1]; @@ -7368,7 +7382,7 @@ [(set (reg:CC CC_REGNUM) (compare:CC (match_operand:DI 0 "cirrus_fp_register" "v") (match_operand:DI 1 "cirrus_fp_register" "v")))] - "TARGET_ARM && TARGET_HARD_FLOAT && TARGET_MAVERICK" + "TARGET_ARM && TARGET_HARD_FLOAT && TARGET_MAVERICK & 0" "cfcmp64%?\\tr15, %V0, %V1" [(set_attr "type" "mav_farith") (set_attr "cirrus" "compare")]