MatCat.OpenSource/8sa1-gcc
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

(paradoxical_extendhidi2, paradoxical_extendqidi2): New patterns.

Browse Source 
From-SVN: r13995
This commit is contained in:
Jim Wilson 1997-04-30 16:45:13 -07:00
parent ad4ff31086
commit 3cce8bc65c
1 changed files with 30 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
gcc/config/mips/mips.md
View File

@ -2497,6 +2497,36 @@ move\\t%0,%z4\\n\\
(set_attr "mode" "DI")
(set_attr "length" "1,1,2")])
;; These can be created when a paradoxical subreg operand with an implicit
;; sign_extend operator is reloaded. Because of the subreg, this is really
;; a zero extend.
;; ??? It might be possible to eliminate the need for these patterns by adding
;; more support to reload for implicit sign_extend operators.
(define_insn "*paradoxical_extendhidi2"
[(set (match_operand:DI 0 "register_operand" "=d,d")
(sign_extend:DI
(subreg:SI (match_operand:HI 1 "memory_operand" "R,m") 0)))]
"TARGET_64BIT"
"*
{
return mips_move_1word (operands, insn, TRUE);
}"
[(set_attr "type" "load,load")
(set_attr "mode" "DI")
(set_attr "length" "1,2")])
(define_insn "*paradoxical_extendqidi2"
[(set (match_operand:DI 0 "register_operand" "=d,d")
(sign_extend:DI
(subreg:SI (match_operand:QI 1 "memory_operand" "R,m") 0)))]
"TARGET_64BIT"
"*
{
return mips_move_1word (operands, insn, TRUE);
}"
[(set_attr "type" "load,load")
(set_attr "mode" "DI")
(set_attr "length" "1,2")])
;;
;; ....................