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Added a few simple optimizations that resolve most of #2527.

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Kugel Fuhr
2025-06-18 10:34:13 +02:00
parent 24b7d1fec7
commit 2ceaa3fabb
5 changed files with 173 additions and 8 deletions
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17
src/cc65/codeopt.c
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@@ -119,7 +119,8 @@ static OptFunc DOptBNegAX1 = { OptBNegAX1, "OptBNegAX1", 100, 0,
static OptFunc DOptBNegAX2 = { OptBNegAX2, "OptBNegAX2", 100, 0, 0, 0, 0, 0 };
static OptFunc DOptBNegAX3 = { OptBNegAX3, "OptBNegAX3", 100, 0, 0, 0, 0, 0 };
static OptFunc DOptBNegAX4 = { OptBNegAX4, "OptBNegAX4", 100, 0, 0, 0, 0, 0 };
static OptFunc DOptBinOps = { OptBinOps, "OptBinOps", 0, 0, 0, 0, 0, 0 };
static OptFunc DOptBinOps1 = { OptBinOps1, "OptBinOps1", 0, 0, 0, 0, 0, 0 };
static OptFunc DOptBinOps2 = { OptBinOps2, "OptBinOps2", 0, 0, 0, 0, 0, 0 };
static OptFunc DOptBoolCmp = { OptBoolCmp, "OptBoolCmp", 100, 0, 0, 0, 0, 0 };
static OptFunc DOptBoolTrans = { OptBoolTrans, "OptBoolTrans", 100, 0, 0, 0, 0, 0 };
static OptFunc DOptBoolUnary1 = { OptBoolUnary1, "OptBoolUnary1", 40, 0, 0, 0, 0, 0 };
@@ -154,6 +155,8 @@ static OptFunc DOptJumpTarget3 = { OptJumpTarget3, "OptJumpTarget3", 100, 0,
static OptFunc DOptLoad1 = { OptLoad1, "OptLoad1", 100, 0, 0, 0, 0, 0 };
static OptFunc DOptLoad2 = { OptLoad2, "OptLoad2", 200, 0, 0, 0, 0, 0 };
static OptFunc DOptLoad3 = { OptLoad3, "OptLoad3", 0, 0, 0, 0, 0, 0 };
static OptFunc DOptLoadStore1 = { OptLoadStore1, "OptLoadStore1", 0, 0, 0, 0, 0, 0 };
static OptFunc DOptLoadStore2 = { OptLoadStore2, "OptLoadStore2", 0, 0, 0, 0, 0, 0 };
static OptFunc DOptLoadStoreLoad= { OptLoadStoreLoad,"OptLoadStoreLoad", 0, 0, 0, 0, 0, 0 };
static OptFunc DOptLongAssign = { OptLongAssign, "OptLongAssign", 100, 0, 0, 0, 0, 0 };
static OptFunc DOptLongCopy = { OptLongCopy, "OptLongCopy", 100, 0, 0, 0, 0, 0 };
@@ -238,7 +241,8 @@ static OptFunc* OptFuncs[] = {
&DOptBNegAX2,
&DOptBNegAX3,
&DOptBNegAX4,
&DOptBinOps,
&DOptBinOps1,
&DOptBinOps2,
&DOptBoolCmp,
&DOptBoolTrans,
&DOptBoolUnary1,
@@ -273,6 +277,8 @@ static OptFunc* OptFuncs[] = {
&DOptLoad1,
&DOptLoad2,
&DOptLoad3,
&DOptLoadStore1,
&DOptLoadStore2,
&DOptLoadStoreLoad,
&DOptLongAssign,
&DOptLongCopy,
@@ -649,6 +655,7 @@ static unsigned RunOptGroup1 (CodeSeg* S)
Changes += RunOptFunc (S, &DOptSub1, 1);
Changes += RunOptFunc (S, &DOptSub3, 1);
Changes += RunOptFunc (S, &DOptLongAssign, 1);
Changes += RunOptFunc (S, &DOptLoadStore2, 1);
Changes += RunOptFunc (S, &DOptStore4, 1);
Changes += RunOptFunc (S, &DOptStore5, 1);
Changes += RunOptFunc (S, &DOptShift1, 1);
@@ -741,9 +748,10 @@ static unsigned RunOptGroup3 (CodeSeg* S)
C += RunOptFunc (S, &DOptJumpTarget3, 1); /* After OptCondBranches2 */
C += RunOptFunc (S, &DOptUnusedLoads, 1);
C += RunOptFunc (S, &DOptUnusedStores, 1);
C += RunOptFunc (S, &DOptDupLoads, 1);
C += RunOptFunc (S, &DOptStoreLoad, 1);
C += RunOptFunc (S, &DOptLoadStoreLoad, 1);
C += RunOptFunc (S, &DOptDupLoads, 1);
C += RunOptFunc (S, &DOptLoadStore1, 1);
C += RunOptFunc (S, &DOptTransfers1, 1);
C += RunOptFunc (S, &DOptTransfers3, 1);
C += RunOptFunc (S, &DOptTransfers4, 1);
@@ -755,7 +763,8 @@ static unsigned RunOptGroup3 (CodeSeg* S)
C += RunOptFunc (S, &DOptPrecalc, 1);
C += RunOptFunc (S, &DOptShiftBack, 1);
C += RunOptFunc (S, &DOptSignExtended, 1);
C += RunOptFunc (S, &DOptBinOps, 1);
C += RunOptFunc (S, &DOptBinOps1, 1);
C += RunOptFunc (S, &DOptBinOps2, 1);
Changes += C;