diff options
Diffstat (limited to 'recipes/gcc/gcc-4.2.4/ep93xx/arm-crunch-disable-cmpdi.patch')
| -rw-r--r-- | recipes/gcc/gcc-4.2.4/ep93xx/arm-crunch-disable-cmpdi.patch | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/recipes/gcc/gcc-4.2.4/ep93xx/arm-crunch-disable-cmpdi.patch b/recipes/gcc/gcc-4.2.4/ep93xx/arm-crunch-disable-cmpdi.patch new file mode 100644 index 0000000000..b48a8cbba9 --- /dev/null +++ b/recipes/gcc/gcc-4.2.4/ep93xx/arm-crunch-disable-cmpdi.patch @@ -0,0 +1,30 @@ +Disable the Maverick's cmpdi instruction which cannot perform the simultaneous +signed/unsigned comparison expected by GCC. + +Index: gcc-4.2.4/gcc/config/arm/arm.md +=================================================================== +--- gcc-4.2.4.orig/gcc/config/arm/arm.md 2007-09-01 16:28:30.000000000 +0100 ++++ gcc-4.2.4/gcc/config/arm/arm.md 2009-08-09 15:45:18.000000000 +0100 +@@ -6981,10 +6981,12 @@ + ) + + ;; 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]; +@@ -6995,7 +6997,7 @@ + [(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")] |