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ZAM fixes for "for" loops that are only used to choose an element from a table/set

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This commit is contained in:
Vern Paxson 2024-01-10 18:42:36 -08:00 • committed by Arne Welzel
parent d1dffd3e1b
commit 6660738b7d
3 changed files with 30 additions and 9 deletions
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17
src/script_opt/ZAM/ZInst.cc
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@ -214,6 +214,23 @@ ValPtr ZInst::ConstVal() const {
return nullptr;
}
bool ZInst::IsLoopIterationAdvancement() const {
switch ( op ) {
case OP_NEXT_TABLE_ITER_VV:
case OP_NEXT_TABLE_ITER_NO_VARS_VV:
case OP_NEXT_TABLE_ITER_VAL_VAR_VVV:
case OP_NEXT_TABLE_ITER_VAL_VAR_NO_VARS_VVV:
case OP_NEXT_VECTOR_ITER_VVV:
case OP_NEXT_VECTOR_BLANK_ITER_VV:
case OP_NEXT_VECTOR_ITER_VAL_VAR_VVVV:
case OP_NEXT_VECTOR_BLANK_ITER_VAL_VAR_VVV:
case OP_NEXT_STRING_ITER_VVV:
case OP_NEXT_STRING_BLANK_ITER_VV: return true;
default: return false;
}
}
string ZInst::ConstDump() const {
auto v = ConstVal();