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Diffstat (limited to 'gcc/config/i386/constraints.md')
| -rw-r--r-- | gcc/config/i386/constraints.md | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/gcc/config/i386/constraints.md b/gcc/config/i386/constraints.md index 6b291a0..ded2e19 100644 --- a/gcc/config/i386/constraints.md +++ b/gcc/config/i386/constraints.md @@ -168,6 +168,7 @@ ;; z Constant call address operand. ;; C Integer SSE constant with all bits set operand. ;; F Floating-point SSE constant with all bits set operand. +;; M x86-64 memory operand. (define_constraint "Bf" "@internal Flags register operand." @@ -232,6 +233,15 @@ (and (match_test "TARGET_SSE") (match_operand 0 "float_vector_all_ones_operand"))) +;; NB: Similar to 'm', but don't use define_memory_constraint on x86-64 +;; to prevent LRA from converting the operand to the form '(mem (reg X))' +;; where X is a base register. +(define_constraint "BM" + "@internal x86-64 memory operand." + (and (match_code "mem") + (match_test "memory_address_addr_space_p (GET_MODE (op), XEXP (op, 0), + MEM_ADDR_SPACE (op))"))) + ;; Integer constant constraints. (define_constraint "Wb" "Integer constant in the range 0 @dots{} 7, for 8-bit shifts." |