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| author | Clifford Wolf <clifford@clifford.at> | 2017-02-04 14:14:26 +0100 |
|---|---|---|
| committer | Clifford Wolf <clifford@clifford.at> | 2017-02-04 14:14:26 +0100 |
| commit | 3928482a3c4fb71b8e6ccdcb362c030eef34a479 (patch) | |
| tree | 482ea8a72c3bae5bafc377136d10426898cb8ac5 /frontends/ast | |
| parent | 911c44d164e04026bd3a3a2eb1bf0c5d9cca5c19 (diff) | |
| download | yosys-3928482a3c4fb71b8e6ccdcb362c030eef34a479.tar.gz yosys-3928482a3c4fb71b8e6ccdcb362c030eef34a479.tar.bz2 yosys-3928482a3c4fb71b8e6ccdcb362c030eef34a479.zip | |
Add $cover cell type and SVA cover() support
Diffstat (limited to 'frontends/ast')
| -rw-r--r-- | frontends/ast/ast.cc | 1 | ||||
| -rw-r--r-- | frontends/ast/ast.h | 1 | ||||
| -rw-r--r-- | frontends/ast/genrtlil.cc | 2 | ||||
| -rw-r--r-- | frontends/ast/simplify.cc | 4 |
4 files changed, 6 insertions, 2 deletions
diff --git a/frontends/ast/ast.cc b/frontends/ast/ast.cc index 2d58c682f..38a19a36f 100644 --- a/frontends/ast/ast.cc +++ b/frontends/ast/ast.cc @@ -84,6 +84,7 @@ std::string AST::type2str(AstNodeType type) X(AST_PREFIX) X(AST_ASSERT) X(AST_ASSUME) + X(AST_COVER) X(AST_FCALL) X(AST_TO_BITS) X(AST_TO_SIGNED) diff --git a/frontends/ast/ast.h b/frontends/ast/ast.h index cd6e264e6..0b9116d39 100644 --- a/frontends/ast/ast.h +++ b/frontends/ast/ast.h @@ -65,6 +65,7 @@ namespace AST AST_PREFIX, AST_ASSERT, AST_ASSUME, + AST_COVER, AST_FCALL, AST_TO_BITS, diff --git a/frontends/ast/genrtlil.cc b/frontends/ast/genrtlil.cc index db8d7409f..bdac4de00 100644 --- a/frontends/ast/genrtlil.cc +++ b/frontends/ast/genrtlil.cc @@ -1336,9 +1336,11 @@ RTLIL::SigSpec AstNode::genRTLIL(int width_hint, bool sign_hint) // generate $assert cells case AST_ASSERT: case AST_ASSUME: + case AST_COVER: { const char *celltype = "$assert"; if (type == AST_ASSUME) celltype = "$assume"; + if (type == AST_COVER) celltype = "$cover"; log_assert(children.size() == 2); diff --git a/frontends/ast/simplify.cc b/frontends/ast/simplify.cc index c1e77c6ec..eecc04132 100644 --- a/frontends/ast/simplify.cc +++ b/frontends/ast/simplify.cc @@ -1400,7 +1400,7 @@ bool AstNode::simplify(bool const_fold, bool at_zero, bool in_lvalue, int stage, } skip_dynamic_range_lvalue_expansion:; - if (stage > 1 && (type == AST_ASSERT || type == AST_ASSUME) && current_block != NULL) + if (stage > 1 && (type == AST_ASSERT || type == AST_ASSUME || type == AST_COVER) && current_block != NULL) { std::stringstream sstr; sstr << "$formal$" << filename << ":" << linenum << "$" << (autoidx++); @@ -1462,7 +1462,7 @@ skip_dynamic_range_lvalue_expansion:; goto apply_newNode; } - if (stage > 1 && (type == AST_ASSERT || type == AST_ASSUME) && children.size() == 1) + if (stage > 1 && (type == AST_ASSERT || type == AST_ASSUME || type == AST_COVER) && children.size() == 1) { children.push_back(mkconst_int(1, false, 1)); did_something = true; |