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Add "nowrshmsk" attribute, fix shift-and-mask bit slice write for signed offset, fixes #1990

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Signed-off-by: Claire Wolf <claire@symbioticeda.com>
This commit is contained in:
Claire Wolf 2020-04-27 17:04:47 +02:00
parent ca3fc3c882
commit bbbce0d1c5
6 changed files with 57 additions and 7 deletions
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4
frontends/ast/genrtlil.cc
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@ -856,6 +856,8 @@ void AstNode::detectSignWidthWorker(int &width_hint, bool &sign_hint, bool *foun
case AST_SHIFT_RIGHT:
case AST_SHIFT_SLEFT:
case AST_SHIFT_SRIGHT:
case AST_SHIFTX:
case AST_SHIFT:
case AST_POW:
children[0]->detectSignWidthWorker(width_hint, sign_hint, found_real);
break;
@ -1356,6 +1358,8 @@ RTLIL::SigSpec AstNode::genRTLIL(int width_hint, bool sign_hint)
if (0) { case AST_SHIFT_RIGHT: type_name = ID($shr); }
if (0) { case AST_SHIFT_SLEFT: type_name = ID($sshl); }
if (0) { case AST_SHIFT_SRIGHT: type_name = ID($sshr); }
if (0) { case AST_SHIFTX: type_name = ID($shiftx); }
if (0) { case AST_SHIFT: type_name = ID($shift); }
{
if (width_hint < 0)
detectSignWidth(width_hint, sign_hint);