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Mark RTI as "uses all registers" to avoid problems with the optimizer

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removing register loads from an interrupt handler return.


git-svn-id: svn://svn.cc65.org/cc65/trunk@2676 b7a2c559-68d2-44c3-8de9-860c34a00d81
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cuz
2003-11-22 13:02:37 +00:00
parent 7e44224dd0
commit efdee34870
1 changed files with 5 additions and 2 deletions
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7
src/cc65/opcodes.c
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@@ -449,11 +449,14 @@ const OPCDesc OPCTable[OPCODE_COUNT] = {
REG_NONE, /* use */ REG_NONE, /* use */
REG_NONE, /* chg */ REG_NONE, /* chg */
OF_SETF /* flags */ OF_SETF /* flags */
}, },
/* Mark RTI as "uses all registers but doesn't change them", so the
* optimizer won't remove preceeding loads.
*/
{ OP65_RTI, /* opcode */ { OP65_RTI, /* opcode */
"rti", /* mnemonic */ "rti", /* mnemonic */
1, /* size */ 1, /* size */
REG_NONE, /* use */ REG_AXY, /* use */
REG_NONE, /* chg */ REG_NONE, /* chg */
OF_RET /* flags */ OF_RET /* flags */
}, },