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| author | nickysn <nickysn@3ad0048d-3df7-0310-abae-a5850022a9f2> | 2020-04-26 21:12:15 +0000 |
|---|---|---|
| committer | nickysn <nickysn@3ad0048d-3df7-0310-abae-a5850022a9f2> | 2020-04-26 21:12:15 +0000 |
| commit | 3d9290262080e217f4e1d7886f57a8b512a9fda9 (patch) | |
| tree | 967501fcfe0491e100e22d31ce23d2e9b769d422 | |
| parent | 1014192338d347054d25304577152abf422af7ca (diff) | |
| download | fpc-3d9290262080e217f4e1d7886f57a8b512a9fda9.tar.gz | |
* optimization in tcgz80.a_load_const_cgpara for pushing longints, where the low 16 bits are equal
to the high 16 bits (works for e.g. 0)
git-svn-id: https://svn.freepascal.org/svn/fpc/branches/z80@45126 3ad0048d-3df7-0310-abae-a5850022a9f2
| -rw-r--r-- | compiler/z80/cgcpu.pas | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/compiler/z80/cgcpu.pas b/compiler/z80/cgcpu.pas index 70b4781a3e..d80382e7ba 100644 --- a/compiler/z80/cgcpu.pas +++ b/compiler/z80/cgcpu.pas @@ -394,7 +394,8 @@ unit cgcpu; getcpuregister(list,NR_IY); list.Concat(taicpu.op_reg_const(A_LD,NR_IY,Word(a shr 16))); list.Concat(taicpu.op_reg(A_PUSH,NR_IY)); - list.Concat(taicpu.op_reg_const(A_LD,NR_IY,Word(a))); + if Word(a)<>Word(a shr 16) then + list.Concat(taicpu.op_reg_const(A_LD,NR_IY,Word(a))); list.Concat(taicpu.op_reg(A_PUSH,NR_IY)); ungetcpuregister(list,NR_IY); end; |