github.com/YosysHQ.yosys
1
0
Fork 0
mirror of synced 2026-04-25 03:46:21 +00:00
Code Issues Releases Wiki Activity

Ensure \A_SIGNED is never used with $shiftx

Browse Source 
It has no effect on the output ($shiftx doesn't perform any sign
extension whatsoever), so an attempt to use it should be caught early.
This commit is contained in:
Xiretza
2020-07-03 13:13:21 +02:00
committed by Marcelina Kościelnicka
parent 928fd40c2e
commit 916028906a
2 changed files with 9 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
kernel/rtlil.cc
View File

@@ -1035,7 +1035,11 @@ namespace {
}
if (cell->type.in(ID($shift), ID($shiftx))) {
param_bool(ID::A_SIGNED);
if (cell->type == ID($shiftx)) {
param_bool(ID::A_SIGNED, /*expected=*/false);
} else {
param_bool(ID::A_SIGNED);
}
param_bool(ID::B_SIGNED);
port(ID::A, param(ID::A_WIDTH));
port(ID::B, param(ID::B_WIDTH));