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Optimize moving negative immediate word.

This commit is contained in:
Piotr Fusik 2019-12-04 23:16:21 +01:00
parent 301b904f60
commit 819701b9be
1 changed files with 4 additions and 3 deletions
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7
source/app.d
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@ -1707,7 +1707,7 @@ void assemblyMoveWord(MoveFunction load, MoveFunction store, ubyte inc, ubyte de
}
switch (addrMode1) {
case AddrMode.IMMEDIATE:
int high = value1 >> 8;
int high = value1 >> 8 & 0xff;
value1 &= 0xff;
load(1);
store(2);
@ -1716,9 +1716,9 @@ void assemblyMoveWord(MoveFunction load, MoveFunction store, ubyte inc, ubyte de
value1 = high;
load(1);
} else {
if (inc != 0 && cast(ubyte) (value1 + 1) == high)
if (inc != 0 && (value1 + 1 & 0xff) == high)
putByte(inc);
else if (dec != 0 && cast(ubyte) (value1 - 1) == high)
else if (dec != 0 && (value1 - 1 & 0xff) == high)
putByte(dec);
else if (value1 != high) {
value1 = high;
@ -2645,6 +2645,7 @@ unittest {
assert(testInstruction("nop") == cast(ubyte[]) hexString!"ea");
assert(testInstruction("add (5,0)") == cast(ubyte[]) hexString!"18a2006105");
assert(testInstruction("mwa #$abcd $1234") == cast(ubyte[]) hexString!"a9cd8d3412a9ab8d3512");
assert(testInstruction("mwx #-256 $80") == cast(ubyte[]) hexString!"a2008680ca8681");
assert(testInstruction("dta 5,d'Foo'*,a($4589)") == cast(ubyte[]) hexString!"05a6efef8945");
assert(testInstruction("dta r(1,12,123,1234567890,12345678900000,.5,.03,000.1664534589,1e97)")
== cast(ubyte[]) hexString!"400100000000 401200000000 410123000000 441234567890 461234567890 3f5000000000 3f0300000000 3f1664534589 701000000000");