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Leave comment about signage assumption

This commit is contained in:
Alain Dargelas 2024-12-18 11:36:21 -08:00
parent 50c93f7726
commit 53cf38c656
1 changed files with 1 additions and 0 deletions
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passes/pmgen/peepopt_muldiv_c.pmg
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@ -48,6 +48,7 @@ code
// Get properties and values of b_const and c_const // Get properties and values of b_const and c_const
int b_const_width = mul->getParam(ID::B_WIDTH).as_int(); int b_const_width = mul->getParam(ID::B_WIDTH).as_int();
// b_const may be coming from the A port but it's an RTLIL invariant that A_SIGNED equals B_SIGNED
bool b_const_signed = mul->getParam(ID::B_SIGNED).as_bool(); bool b_const_signed = mul->getParam(ID::B_SIGNED).as_bool();
bool c_const_signed = div->getParam(ID::B_SIGNED).as_bool(); bool c_const_signed = div->getParam(ID::B_SIGNED).as_bool();
int b_const_int = b_const.as_int(b_const_signed); int b_const_int = b_const.as_int(b_const_signed);