diff options
Diffstat (limited to 'gcc/config/vax/builtins.md')
| -rw-r--r-- | gcc/config/vax/builtins.md | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/gcc/config/vax/builtins.md b/gcc/config/vax/builtins.md index b7ed976..e96ac3f 100644 --- a/gcc/config/vax/builtins.md +++ b/gcc/config/vax/builtins.md @@ -29,6 +29,8 @@ (define_int_iterator bit [0 1]) (define_int_attr ccss [(0 "cc") (1 "ss")]) +(define_code_iterator any_extend [sign_extend zero_extend]) + (define_expand "ffs<mode>2" [(set (match_operand:SI 0 "nonimmediate_operand" "") (ffs:SI (match_operand:VAXint 1 "general_operand" "")))] @@ -57,6 +59,26 @@ "" "ffs $0,$<width>,%1,%0") +;; Our FFS hardware instruction supports any field width, +;; so handle narrower inputs directly as well. +(define_peephole2 + [(set (match_operand:SI 0 "register_operand") + (any_extend:SI (match_operand:VAXintQH 1 "general_operand"))) + (parallel + [(set (match_operand:SI 2 "nonimmediate_operand") + (ctz:SI (match_dup 0))) + (set (cc0) + (compare (match_dup 2) + (const_int 0)))])] + "rtx_equal_p (operands[0], operands[2]) || peep2_reg_dead_p (2, operands[0])" + [(parallel + [(set (match_dup 2) + (ctz:SI (match_dup 1))) + (set (cc0) + (compare (match_dup 1) + (const_int 0)))])] + "") + (define_expand "sync_lock_test_and_set<mode>" [(match_operand:VAXint 0 "nonimmediate_operand" "=&g") (match_operand:VAXint 1 "memory_operand" "+m") |