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| author | nickysn <nickysn@3ad0048d-3df7-0310-abae-a5850022a9f2> | 2020-04-26 17:24:53 +0000 |
|---|---|---|
| committer | nickysn <nickysn@3ad0048d-3df7-0310-abae-a5850022a9f2> | 2020-04-26 17:24:53 +0000 |
| commit | b671482efe2d43621cf7b29f611257e22098eee9 (patch) | |
| tree | 83e637e435276a96acb207e943e669a8261851b8 | |
| parent | 91e068b8033101842ba0f55de809512363c92b2d (diff) | |
| download | fpc-b671482efe2d43621cf7b29f611257e22098eee9.tar.gz | |
+ generate better code in op_const_reg for OP_ADD and OP_SUB by using in certain cases A_DEC for OP_SUB
and A_INC for OP_ADD
git-svn-id: https://svn.freepascal.org/svn/fpc/branches/z80@45120 3ad0048d-3df7-0310-abae-a5850022a9f2
| -rw-r--r-- | compiler/z80/cgcpu.pas | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/compiler/z80/cgcpu.pas b/compiler/z80/cgcpu.pas index 856e7ee706..12d1f34f36 100644 --- a/compiler/z80/cgcpu.pas +++ b/compiler/z80/cgcpu.pas @@ -1105,6 +1105,8 @@ unit cgcpu; begin if (tmpop=A_NONE) and (curvalue=1) and (i=tcgsize2size[size]) then tmpop:=A_INC + else if (tmpop=A_NONE) and (curvalue=255) and (i=tcgsize2size[size]) then + tmpop:=A_DEC else if (tmpop=A_NONE) and (curvalue<>0) then tmpop:=A_ADD else if tmpop=A_ADD then @@ -1112,7 +1114,7 @@ unit cgcpu; case tmpop of A_NONE: {nothing}; - A_INC: + A_INC,A_DEC: list.concat(taicpu.op_reg(tmpop,reg)); A_ADD,A_ADC: begin @@ -1142,6 +1144,8 @@ unit cgcpu; begin if (tmpop=A_NONE) and (curvalue=1) and (i=tcgsize2size[size]) then tmpop:=A_DEC + else if (tmpop=A_NONE) and (curvalue=255) and (i=tcgsize2size[size]) then + tmpop:=A_INC else if (tmpop=A_NONE) and (curvalue<>0) then tmpop:=A_SUB else if tmpop=A_SUB then @@ -1149,7 +1153,7 @@ unit cgcpu; case tmpop of A_NONE: {nothing}; - A_DEC: + A_DEC,A_INC: list.concat(taicpu.op_reg(tmpop,reg)); A_SUB,A_SBC: begin |