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Fixed const folding of ternary operator

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This commit is contained in:
Clifford Wolf 2013-11-04 16:46:14 +01:00
parent 8d226da694
commit d38c67f53d
1 changed files with 5 additions and 4 deletions
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9
frontends/ast/simplify.cc
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@ -1033,10 +1033,11 @@ skip_dynamic_range_lvalue_expansion:;
break;
case AST_TERNARY:
if (children[0]->type == AST_CONSTANT) {
if (children[0]->integer)
newNode = children[1]->clone();
else
newNode = children[2]->clone();
AstNode *choice = children[children[0]->integer ? 1 : 2];
if (choice->type == AST_CONSTANT) {
RTLIL::Const y = choice->bitsAsConst(width_hint, sign_hint);
newNode = mkconst_bits(y.bits, sign_hint);
}
}
break;
case AST_CONCAT: