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[circt-lec] Lower truth tables before SMT conversion #10491

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[circt-lec] Lower truth tables before SMT conversion #10491

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14 changes: 14 additions & 0 deletions test/Tools/circt-lec/truth-table.mlir
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Original file line number Diff line number Diff line change
@@ -0,0 +1,14 @@
// RUN: circt-lec %s --c1 table --c2 xor --emit-mlir | FileCheck %s

// CHECK-LABEL: smt.solver()
// CHECK-NOT: comb.truth_table
// CHECK: smt.ite
hw.module @table(in %a : i1, in %b : i1, out result : i1) {
%0 = comb.truth_table %a, %b -> [false, true, true, false]
hw.output %0 : i1
}

hw.module @xor(in %a : i1, in %b : i1, out result : i1) {
%0 = comb.xor %a, %b : i1
hw.output %0 : i1
}
1 change: 1 addition & 0 deletions tools/circt-lec/CMakeLists.txt
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Expand Up @@ -14,6 +14,7 @@ target_link_libraries(circt-lec
PRIVATE
CIRCTComb
CIRCTCombToSMT
CIRCTCombTransforms
CIRCTDatapath
CIRCTDatapathToSMT
CIRCTEmitTransforms
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2 changes: 2 additions & 0 deletions tools/circt-lec/circt-lec.cpp
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Expand Up @@ -19,6 +19,7 @@
#include "circt/Conversion/SynthToComb.h"
#include "circt/Conversion/VerifToSMT.h"
#include "circt/Dialect/Comb/CombDialect.h"
#include "circt/Dialect/Comb/CombPasses.h"
#include "circt/Dialect/Datapath/DatapathDialect.h"
#include "circt/Dialect/Emit/EmitDialect.h"
#include "circt/Dialect/Emit/EmitPasses.h"
Expand Down Expand Up @@ -238,6 +239,7 @@ static LogicalResult executeLEC(MLIRContext &context) {
pm.addPass(createConstructLEC(opts));
}
pm.addPass(createConvertSynthToComb());
pm.addPass(comb::createLowerComb());
pm.addPass(createConvertHWToSMT());
pm.addPass(createConvertDatapathToSMT());
pm.addPass(createConvertCombToSMT());
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