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Fixed another problem with OptStackOps: Load tracking will not work across

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branches - if we find a label, just forget all information we had before.


git-svn-id: svn://svn.cc65.org/cc65/trunk@4116 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
uz
2009-09-04 19:54:29 +00:00
parent f6c589bf8e
commit 18d865e609
1 changed files with 13 additions and 1 deletions
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12
src/cc65/coptstop.c
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@@ -1779,6 +1779,12 @@ unsigned OptStackOps (CodeSeg* S)
/* While searching, track register load insns, so we can tell /* While searching, track register load insns, so we can tell
* what is in a register once pushax is encountered. * what is in a register once pushax is encountered.
*/ */
if (CE_HasLabel (E)) {
/* Currently we don't track across branches */
InvalidateLoadRegInfo (&Data.Lhs.A);
InvalidateLoadRegInfo (&Data.Lhs.X);
InvalidateLoadRegInfo (&Data.Lhs.Y);
}
if (CE_IsCallTo (E, "pushax")) { if (CE_IsCallTo (E, "pushax")) {
Data.PushIndex = I; Data.PushIndex = I;
State = FoundPush; State = FoundPush;
@@ -1793,6 +1799,12 @@ unsigned OptStackOps (CodeSeg* S)
* follow and in the meantime, track zeropage usage and check * follow and in the meantime, track zeropage usage and check
* for code that will disable us from translating the sequence. * for code that will disable us from translating the sequence.
*/ */
if (CE_HasLabel (E)) {
/* Currently we don't track across branches */
InvalidateLoadRegInfo (&Data.Rhs.A);
InvalidateLoadRegInfo (&Data.Rhs.X);
InvalidateLoadRegInfo (&Data.Rhs.Y);
}
if (E->OPC == OP65_JSR) { if (E->OPC == OP65_JSR) {
/* Subroutine call: Check if this is one of the functions, /* Subroutine call: Check if this is one of the functions,