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| author | Kamil Rakoczy <krakoczy@antmicro.com> | 2020-06-03 16:44:02 +0200 |
|---|---|---|
| committer | Kamil Rakoczy <krakoczy@antmicro.com> | 2020-06-24 11:54:30 +0200 |
| commit | 22408f24c7d9c8a648e854fad01aff37a0f9fbd9 (patch) | |
| tree | ac8f9e7037d99e719947ca1f19239758875d2a11 | |
| parent | 416a66aee822c999a28f580cbcdb24cdf4e73a13 (diff) | |
| download | yosys-22408f24c7d9c8a648e854fad01aff37a0f9fbd9.tar.gz yosys-22408f24c7d9c8a648e854fad01aff37a0f9fbd9.tar.bz2 yosys-22408f24c7d9c8a648e854fad01aff37a0f9fbd9.zip | |
Add plus-assignment operator
Signed-off-by: Kamil Rakoczy <krakoczy@antmicro.com>
| -rw-r--r-- | frontends/verilog/verilog_lexer.l | 1 | ||||
| -rw-r--r-- | frontends/verilog/verilog_parser.y | 10 |
2 files changed, 10 insertions, 1 deletions
diff --git a/frontends/verilog/verilog_lexer.l b/frontends/verilog/verilog_lexer.l index ea85bf52e..c77da4274 100644 --- a/frontends/verilog/verilog_lexer.l +++ b/frontends/verilog/verilog_lexer.l @@ -527,6 +527,7 @@ import[ \t\r\n]+\"(DPI|DPI-C)\"[ \t\r\n]+function[ \t\r\n]+ { ".*" { return TOK_WILDCARD_CONNECT; } "|=" { SV_KEYWORD(TOK_OR_ASSIGN); } +"+=" { SV_KEYWORD(TOK_PLUS_ASSIGN); } [-+]?[=*]> { if (!specify_mode) REJECT; diff --git a/frontends/verilog/verilog_parser.y b/frontends/verilog/verilog_parser.y index f7a73b00e..e8b74cf83 100644 --- a/frontends/verilog/verilog_parser.y +++ b/frontends/verilog/verilog_parser.y @@ -256,7 +256,7 @@ static void rewriteAsMemoryNode(AstNode *node, AstNode *rangeNode) %token TOK_PACKAGE TOK_ENDPACKAGE TOK_PACKAGESEP %token TOK_INTERFACE TOK_ENDINTERFACE TOK_MODPORT TOK_VAR TOK_WILDCARD_CONNECT %token TOK_INPUT TOK_OUTPUT TOK_INOUT TOK_WIRE TOK_WAND TOK_WOR TOK_REG TOK_LOGIC -%token TOK_INTEGER TOK_SIGNED TOK_ASSIGN TOK_ALWAYS TOK_INITIAL +%token TOK_INTEGER TOK_SIGNED TOK_ASSIGN TOK_PLUS_ASSIGN TOK_ALWAYS TOK_INITIAL %token TOK_ALWAYS_FF TOK_ALWAYS_COMB TOK_ALWAYS_LATCH %token TOK_BEGIN TOK_END TOK_IF TOK_ELSE TOK_FOR TOK_WHILE TOK_REPEAT %token TOK_DPI_FUNCTION TOK_POSEDGE TOK_NEGEDGE TOK_OR TOK_OR_ASSIGN TOK_AUTOMATIC @@ -2342,6 +2342,14 @@ simple_behavioral_stmt: SET_AST_NODE_LOC(node, @2, @5); ast_stack.back()->children.push_back(node); append_attr(node, $1); + } | + attr lvalue TOK_PLUS_ASSIGN delay expr { + AstNode *add_node = new AstNode(AST_ADD, $2->clone(), $5); + AstNode *node = new AstNode(AST_ASSIGN_EQ, $2, add_node); + SET_AST_NODE_LOC(node, @2, @5); + SET_AST_NODE_LOC(add_node, @2, @5); + ast_stack.back()->children.push_back(node); + append_attr(node, $1); }; // this production creates the obligatory if-else shift/reduce conflict |