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| author | Xiretza <xiretza@xiretza.xyz> | 2020-04-21 12:51:58 +0200 |
|---|---|---|
| committer | Xiretza <xiretza@xiretza.xyz> | 2020-05-28 22:59:04 +0200 |
| commit | edd8ff2c0778d97808869488cc7394151456c4ca (patch) | |
| tree | 797418b87588ae7a69992b7f107dfd5cdfdec08d /passes/memory | |
| parent | 17163cf43a6b6eec9aac44f6a4463dda54b8ed68 (diff) | |
| download | yosys-edd8ff2c0778d97808869488cc7394151456c4ca.tar.gz yosys-edd8ff2c0778d97808869488cc7394151456c4ca.tar.bz2 yosys-edd8ff2c0778d97808869488cc7394151456c4ca.zip | |
Add flooring division operator
The $div and $mod cells use truncating division semantics (rounding
towards 0), as defined by e.g. Verilog. Another rounding mode, flooring
(rounding towards negative infinity), can be used in e.g. VHDL. The
new $divfloor cell provides this flooring division.
This commit also fixes the handling of $div in opt_expr, which was
previously optimized as if it was $divfloor.
Diffstat (limited to 'passes/memory')
| -rw-r--r-- | passes/memory/memory_share.cc | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/passes/memory/memory_share.cc b/passes/memory/memory_share.cc index c9ac03a6a..e11958bd6 100644 --- a/passes/memory/memory_share.cc +++ b/passes/memory/memory_share.cc @@ -716,6 +716,7 @@ struct MemoryShareWorker cone_ct.cell_types.erase(ID($mod)); cone_ct.cell_types.erase(ID($div)); cone_ct.cell_types.erase(ID($modfloor)); + cone_ct.cell_types.erase(ID($divfloor)); cone_ct.cell_types.erase(ID($pow)); cone_ct.cell_types.erase(ID($shl)); cone_ct.cell_types.erase(ID($shr)); |