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[FIRRTL][CAPI] add LayerConvention Enum and Attr #8073

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Jan 13, 2025
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[FIRRTL][CAPI] add LayerConvention Enum and Attr #8073

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11 changes: 11 additions & 0 deletions include/circt-c/Dialect/FIRRTL.h
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Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,13 @@ typedef enum FIRRTLConvention {
FIRRTL_CONVENTION_SCALARIZED,
} FIRRTLConvention;

/// Layer lowering conventions.
// NOLINTNEXTLINE(modernize-use-using)
typedef enum FIRRTLLayerConvention {
FIRRTL_LAYER_CONVENTION_BIND,
FIRRTL_LAYER_CONVENTION_INLINE,
} FIRRTLLayerConvention;

/// Port direction.
// NOLINTNEXTLINE(modernize-use-using)
typedef enum FIRRTLDirection {
Expand Down Expand Up @@ -266,6 +273,10 @@ MLIR_CAPI_EXPORTED MlirType firrtlTypeGetMaskType(MlirType type);
MLIR_CAPI_EXPORTED MlirAttribute
firrtlAttrGetConvention(MlirContext ctx, FIRRTLConvention convention);

/// Creates a LayerConventionAttr with the specified value.
MLIR_CAPI_EXPORTED MlirAttribute
firrtlAttrGetLayerConvention(MlirContext ctx, FIRRTLLayerConvention convention);

/// Creates a DenseBoolArrayAttr with the specified port directions.
MLIR_CAPI_EXPORTED MlirAttribute firrtlAttrGetPortDirs(
MlirContext ctx, size_t count, const FIRRTLDirection *dirs);
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16 changes: 16 additions & 0 deletions lib/CAPI/Dialect/FIRRTL.cpp
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Expand Up @@ -291,6 +291,22 @@ MlirAttribute firrtlAttrGetConvention(MlirContext ctx,
return wrap(ConventionAttr::get(unwrap(ctx), value));
}

MlirAttribute firrtlAttrGetLayerConvention(MlirContext ctx,
FIRRTLLayerConvention convention) {
LayerConvention value;

switch (convention) {
case FIRRTL_LAYER_CONVENTION_BIND:
value = LayerConvention::Bind;
break;
case FIRRTL_LAYER_CONVENTION_INLINE:
value = LayerConvention::Inline;
break;
}

return wrap(LayerConventionAttr::get(unwrap(ctx), value));
}

MlirAttribute firrtlAttrGetPortDirs(MlirContext ctx, size_t count,
const FIRRTLDirection *dirs) {
static_assert(FIRRTL_DIRECTION_IN ==
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