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| author | gjl <gjl@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-11-07 18:07:56 +0000 |
|---|---|---|
| committer | gjl <gjl@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-11-07 18:07:56 +0000 |
| commit | 69a5e82f931b655a422391e2651c8e5fb6983517 (patch) | |
| tree | 4b1ba7d907dc39e9b8d861d513b4c7fb656834e8 /gcc/config | |
| parent | 920f5a70f4497afa3a0d5a14069404276d31d588 (diff) | |
| download | gcc-69a5e82f931b655a422391e2651c8e5fb6983517.tar.gz | |
* config/avr/constraints.md (Cm2): New constraint for int -2.
* config/avr/avr.md (addqi3): Use it. New alternatives for +/-2.
(*negqihi2): New insn.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@181103 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/config')
| -rw-r--r-- | gcc/config/avr/avr.md | 22 | ||||
| -rw-r--r-- | gcc/config/avr/constraints.md | 5 |
2 files changed, 21 insertions, 6 deletions
diff --git a/gcc/config/avr/avr.md b/gcc/config/avr/avr.md index 12e94850c95..59330104fa0 100644 --- a/gcc/config/avr/avr.md +++ b/gcc/config/avr/avr.md @@ -752,17 +752,19 @@ ; add bytes (define_insn "addqi3" - [(set (match_operand:QI 0 "register_operand" "=r,d,r,r") - (plus:QI (match_operand:QI 1 "register_operand" "%0,0,0,0") - (match_operand:QI 2 "nonmemory_operand" "r,i,P,N")))] + [(set (match_operand:QI 0 "register_operand" "=r,d,r,r,r,r") + (plus:QI (match_operand:QI 1 "register_operand" "%0,0,0,0,0,0") + (match_operand:QI 2 "nonmemory_operand" "r,i,P,N,K,Cm2")))] "" "@ add %0,%2 subi %0,lo8(-(%2)) inc %0 - dec %0" - [(set_attr "length" "1,1,1,1") - (set_attr "cc" "set_czn,set_czn,set_zn,set_zn")]) + dec %0 + inc %0\;inc %0 + dec %0\;dec %0" + [(set_attr "length" "1,1,1,1,2,2") + (set_attr "cc" "set_czn,set_czn,set_zn,set_zn,set_zn,set_zn")]) (define_expand "addhi3" @@ -3386,6 +3388,14 @@ [(set_attr "length" "1") (set_attr "cc" "set_zn")]) +(define_insn "*negqihi2" + [(set (match_operand:HI 0 "register_operand" "=r") + (neg:HI (sign_extend:HI (match_operand:QI 1 "register_operand" "0"))))] + "" + "clr %B0\;neg %A0\;brge .+2\;com %B0" + [(set_attr "length" "4") + (set_attr "cc" "set_n")]) + (define_insn "neghi2" [(set (match_operand:HI 0 "register_operand" "=!d,r,&r") (neg:HI (match_operand:HI 1 "register_operand" "0,0,r")))] diff --git a/gcc/config/avr/constraints.md b/gcc/config/avr/constraints.md index 0f6a03adbf1..50aae32b01a 100644 --- a/gcc/config/avr/constraints.md +++ b/gcc/config/avr/constraints.md @@ -103,6 +103,11 @@ (and (match_code "mem") (match_test "extra_constraint_Q (op)"))) +(define_constraint "Cm2" + "Constant integer @minus{}2." + (and (match_code "const_int") + (match_test "ival == -2"))) + (define_constraint "C03" "Constant integer 3." (and (match_code "const_int") |