diff options
| author | jamesbowman <jamesbowman@138bc75d-0d04-0410-961f-82ee72b054a4> | 2015-09-29 23:34:34 +0000 |
|---|---|---|
| committer | jamesbowman <jamesbowman@138bc75d-0d04-0410-961f-82ee72b054a4> | 2015-09-29 23:34:34 +0000 |
| commit | 9cf8d38f3f411254ba773d580d182b3cff31cf12 (patch) | |
| tree | 7fd16acf1d71e9bc3c2a15d9ac584e882621b3b4 /gcc/config | |
| parent | f77aa642e2989a07a604c1752ed3e627748f3161 (diff) | |
| download | gcc-9cf8d38f3f411254ba773d580d182b3cff31cf12.tar.gz | |
Limit the MEMSET (setmemsi pattern) and MEMCPY (movmemsi pattern)
instructions to 0-511 bytes. There is a hardware limitation on large
MEMSET, MEMCPY operations that the library versions of memset() and
memcpy() deal with.
2015-09-29 James Bowman <james.bowman@ftdichip.com>
* config/ft32/predicates.md (ft32_imm_operand): New predicate.
* config/ft32/ft32.md (movmemsi, setmemsi): Use ft32_imm_operand
predicate, disallow register for operand 2.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@228271 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/config')
| -rw-r--r-- | gcc/config/ft32/ft32.md | 14 | ||||
| -rw-r--r-- | gcc/config/ft32/predicates.md | 4 |
2 files changed, 11 insertions, 7 deletions
diff --git a/gcc/config/ft32/ft32.md b/gcc/config/ft32/ft32.md index 68dc683023d..1eac74ddb79 100644 --- a/gcc/config/ft32/ft32.md +++ b/gcc/config/ft32/ft32.md @@ -841,19 +841,19 @@ ) (define_insn "movmemsi" - [(set (match_operand:BLK 0 "memory_operand" "=W,W,BW") - (match_operand:BLK 1 "memory_operand" "W,W,BW")) - (use (match_operand:SI 2 "ft32_rimm_operand" "r,KA,rKA")) + [(set (match_operand:BLK 0 "memory_operand" "=W,BW") + (match_operand:BLK 1 "memory_operand" "W,BW")) + (use (match_operand:SI 2 "ft32_imm_operand" "KA,KA")) (use (match_operand:SI 3)) ] "" - "memcpy.%d3 %b0,%b1,%2 # %3!" + "memcpy.%d3 %b0,%b1,%2 " ) (define_insn "setmemsi" - [(set (match_operand:BLK 0 "memory_operand" "=BW,BW") (unspec:BLK [ - (use (match_operand:QI 2 "register_operand" "r,r")) - (use (match_operand:SI 1 "ft32_rimm_operand" "r,KA")) + [(set (match_operand:BLK 0 "memory_operand" "=BW") (unspec:BLK [ + (use (match_operand:QI 2 "register_operand" "r")) + (use (match_operand:SI 1 "ft32_imm_operand" "KA")) ] UNSPEC_SETMEM)) (use (match_operand:SI 3)) ] diff --git a/gcc/config/ft32/predicates.md b/gcc/config/ft32/predicates.md index ac800ae03f0..32ca8c6b2ad 100644 --- a/gcc/config/ft32/predicates.md +++ b/gcc/config/ft32/predicates.md @@ -80,6 +80,10 @@ (and (match_code "const_int") (match_test "IN_RANGE (INTVAL (op), -512, 511)")))) +(define_predicate "ft32_imm_operand" + (and (match_code "const_int") + (match_test "IN_RANGE (INTVAL (op), -512, 511)"))) + (define_predicate "ft32_bwidth_operand" (and (match_code "const_int") (match_test "IN_RANGE (INTVAL (op), 1, 16)"))) |