aboutsummaryrefslogtreecommitdiffstats
path: root/backends/btor
diff options
context:
space:
mode:
Diffstat (limited to 'backends/btor')
-rw-r--r--backends/btor/btor.cc14
-rw-r--r--backends/btor/test_cells.sh2
2 files changed, 11 insertions, 5 deletions
diff --git a/backends/btor/btor.cc b/backends/btor/btor.cc
index 14c8484e8..2816d3246 100644
--- a/backends/btor/btor.cc
+++ b/backends/btor/btor.cc
@@ -266,20 +266,26 @@ struct BtorWorker
goto okay;
}
- if (cell->type.in(ID($div), ID($mod)))
+ if (cell->type.in(ID($div), ID($mod), ID($modfloor)))
{
+ bool a_signed = cell->hasParam(ID::A_SIGNED) ? cell->getParam(ID::A_SIGNED).as_bool() : false;
+ bool b_signed = cell->hasParam(ID::B_SIGNED) ? cell->getParam(ID::B_SIGNED).as_bool() : false;
+
string btor_op;
if (cell->type == ID($div)) btor_op = "div";
+ // "rem" = truncating modulo
if (cell->type == ID($mod)) btor_op = "rem";
+ // "mod" = flooring modulo
+ if (cell->type == ID($modfloor)) {
+ // "umod" doesn't exist because it's the same as "urem"
+ btor_op = a_signed || b_signed ? "mod" : "rem";
+ }
log_assert(!btor_op.empty());
int width = GetSize(cell->getPort(ID::Y));
width = std::max(width, GetSize(cell->getPort(ID::A)));
width = std::max(width, GetSize(cell->getPort(ID::B)));
- bool a_signed = cell->hasParam(ID::A_SIGNED) ? cell->getParam(ID::A_SIGNED).as_bool() : false;
- bool b_signed = cell->hasParam(ID::B_SIGNED) ? cell->getParam(ID::B_SIGNED).as_bool() : false;
-
int nid_a = get_sig_nid(cell->getPort(ID::A), width, a_signed);
int nid_b = get_sig_nid(cell->getPort(ID::B), width, b_signed);
diff --git a/backends/btor/test_cells.sh b/backends/btor/test_cells.sh
index e0f1a0514..3f077201a 100644
--- a/backends/btor/test_cells.sh
+++ b/backends/btor/test_cells.sh
@@ -6,7 +6,7 @@ rm -rf test_cells.tmp
mkdir -p test_cells.tmp
cd test_cells.tmp
-../../../yosys -p 'test_cell -n 5 -w test all /$alu /$fa /$lcu /$lut /$sop /$macc /$mul /$div /$mod'
+../../../yosys -p 'test_cell -n 5 -w test all /$alu /$fa /$lcu /$lut /$sop /$macc /$mul /$div /$mod /$divfloor /$modfloor'
for fn in test_*.il; do
../../../yosys -p "