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Limit CSE for IR_CARG to fix loop optimizations.

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Thanks to Peter Cawley. #1244
This commit is contained in:
Mike Pall 2024-08-15 00:07:34 +02:00
parent 7a608e4425
commit 3bdc6498c4
1 changed files with 11 additions and 0 deletions
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11
src/lj_opt_fold.c
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@ -2171,6 +2171,17 @@ LJFOLD(CNEW any any)
LJFOLD(XSNEW any any)
LJFOLDX(lj_ir_emit)
/* -- Miscellaneous ------------------------------------------------------- */
LJFOLD(CARG any any)
LJFOLDF(cse_carg)
{
TRef tr = lj_opt_cse(J);
if (tref_ref(tr) < J->chain[IR_LOOP]) /* CSE across loop? */
return EMITFOLD; /* Raw emit. Assumes fins is left intact by CSE. */
return tr;
}
/* ------------------------------------------------------------------------ */
/* Every entry in the generated hash table is a 32 bit pattern: