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| author | Stephane Carrez <Stephane.Carrez@worldnet.fr> | 2001-11-25 17:45:22 +0100 |
|---|---|---|
| committer | Stephane Carrez <ciceron@gcc.gnu.org> | 2001-11-25 17:45:22 +0100 |
| commit | 4f81fba13e2c6e8a69618d9a27ceae482ebd954f (patch) | |
| tree | 95c913ce93135e0e58a8f9b14c3fc3d92b02cdea /gcc | |
| parent | 259ed6e2708ccb8f43c0089b11628a7d93048743 (diff) | |
| download | gcc-4f81fba13e2c6e8a69618d9a27ceae482ebd954f.zip gcc-4f81fba13e2c6e8a69618d9a27ceae482ebd954f.tar.gz gcc-4f81fba13e2c6e8a69618d9a27ceae482ebd954f.tar.bz2 | |
m68hc11.md (peephole2): New peephole2 to optimize address computations.
* config/m68hc11/m68hc11.md (peephole2): New peephole2 to optimize
address computations.
From-SVN: r47323
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/config/m68hc11/m68hc11.md | 26 |
2 files changed, 31 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 1b320b2..e6ec65b 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,10 @@ 2001-11-25 Stephane Carrez <Stephane.Carrez@worldnet.fr> + * config/m68hc11/m68hc11.md (peephole2): New peephole2 to optimize + address computations. + +2001-11-25 Stephane Carrez <Stephane.Carrez@worldnet.fr> + * config/m68hc11/m68hc11.c (d_register_operand): Must accept register b (low part of d). diff --git a/gcc/config/m68hc11/m68hc11.md b/gcc/config/m68hc11/m68hc11.md index 10886d2..f201e74 100644 --- a/gcc/config/m68hc11/m68hc11.md +++ b/gcc/config/m68hc11/m68hc11.md @@ -6103,6 +6103,32 @@ ;;-------------------------------------------------------------------- ;; +;; Reorganize to optimize address computations. +;; +(define_peephole2 + [(set (match_operand:HI 0 "hard_reg_operand" "") + (match_operand:HI 1 "const_int_operand" "")) + (set (match_dup 0) + (plus:HI (match_dup 0) + (match_operand:HI 2 "general_operand" "")))] + "(INTVAL (operands[1]) >= -2 && INTVAL (operands[1]) <= 2)" + [(set (match_dup 0) (match_dup 2)) + (set (match_dup 0) (plus:HI (match_dup 0) (match_dup 1)))] + "") + +;; +;; Reorganize address computation based on stack pointer. +;; +(define_peephole2 + [(set (match_operand:HI 0 "hard_reg_operand" "") + (match_operand:HI 1 "const_int_operand" "")) + (set (match_dup 0) (plus:HI (match_dup 0) (reg:HI SP_REGNUM)))] + "" + [(set (match_dup 0) (reg:HI SP_REGNUM)) + (set (match_dup 0) (plus:HI (match_dup 0) (match_dup 1)))] + "") + +;; ;; This peephole catches the address computations generated by the reload ;; pass. (define_peephole |