diff options
Diffstat (limited to 'gcc/config/i386/predicates.md')
| -rw-r--r-- | gcc/config/i386/predicates.md | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/gcc/config/i386/predicates.md b/gcc/config/i386/predicates.md index b2bef64..f1c7103 100644 --- a/gcc/config/i386/predicates.md +++ b/gcc/config/i386/predicates.md @@ -887,6 +887,34 @@ return parts.disp != NULL_RTX; }) +;; Returns 1 if OP is memory operand which will need zero or +;; one register at most, not counting stack pointer or frame pointer. +(define_predicate "cmpxchg8b_pic_memory_operand" + (match_operand 0 "memory_operand") +{ + struct ix86_address parts; + int ok; + + ok = ix86_decompose_address (XEXP (op, 0), &parts); + gcc_assert (ok); + if (parts.base == NULL_RTX + || parts.base == arg_pointer_rtx + || parts.base == frame_pointer_rtx + || parts.base == hard_frame_pointer_rtx + || parts.base == stack_pointer_rtx) + return 1; + + if (parts.index == NULL_RTX + || parts.index == arg_pointer_rtx + || parts.index == frame_pointer_rtx + || parts.index == hard_frame_pointer_rtx + || parts.index == stack_pointer_rtx) + return 1; + + return 0; +}) + + ;; Returns 1 if OP is memory operand that cannot be represented ;; by the modRM array. (define_predicate "long_memory_operand" |