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| author | clairexen <claire@symbioticeda.com> | 2020-07-01 16:40:20 +0200 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2020-07-01 16:40:20 +0200 |
| commit | 8ce4f8790ecf33f7df19e0fb54a749abe026831d (patch) | |
| tree | 20d18b6f47cb74be76d91568cfc0e0f51a47f1dd /frontends/ast/simplify.cc | |
| parent | b1707407a0912fe44ecf83f6f8e64b13a1c4daee (diff) | |
| parent | 429d37ff41b5a058fdd0b70f23a55170a973c369 (diff) | |
| download | yosys-8ce4f8790ecf33f7df19e0fb54a749abe026831d.tar.gz yosys-8ce4f8790ecf33f7df19e0fb54a749abe026831d.tar.bz2 yosys-8ce4f8790ecf33f7df19e0fb54a749abe026831d.zip | |
Merge pull request #2179 from splhack/static-cast
Support SystemVerilog Static Cast
Diffstat (limited to 'frontends/ast/simplify.cc')
| -rw-r--r-- | frontends/ast/simplify.cc | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/frontends/ast/simplify.cc b/frontends/ast/simplify.cc index c819924a0..c4df5c0a0 100644 --- a/frontends/ast/simplify.cc +++ b/frontends/ast/simplify.cc @@ -950,6 +950,7 @@ bool AstNode::simplify(bool const_fold, bool at_zero, bool in_lvalue, int stage, case AST_TO_SIGNED: case AST_TO_UNSIGNED: case AST_SELFSZ: + case AST_CAST_SIZE: case AST_CONCAT: case AST_REPLICATE: case AST_REDUCE_AND: @@ -3487,6 +3488,13 @@ replace_fcall_later:; } } break; + case AST_CAST_SIZE: + if (children.at(0)->type == AST_CONSTANT && children.at(1)->type == AST_CONSTANT) { + int width = children[0]->bitsAsConst().as_int(); + RTLIL::Const val = children[1]->bitsAsConst(width); + newNode = mkconst_bits(val.bits, children[1]->is_signed); + } + break; case AST_CONCAT: string_op = !children.empty(); for (auto it = children.begin(); it != children.end(); it++) { |