llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-clang
Author: Alexander Pivovarov (apivovarov)
<details>
<summary>Changes</summary>
This PR adds `f8E4M3` type which follows IEEE 754 convention
```c
f8E4M3 (IEEE 754)
- Exponent: 4
- Mantissa: 3
- Exponent bias: 7
- Follows IEEE 754 conventions for representation of special values
- Has Positive and Negative zero
- Has Positive and Negative infinity
- Has NaNs
Additional details:
- Max exp (unbiased): 7
- Min exp (unbiased): -6
- Infinities (+/-): S.1111.000
- Zeros (+/-): S.0000.000
- NaNs: S.1111.{001, 010, 011, 100, 101, 110, 111}
- Max normal number: S.1110.111 = +/-240
- Min normal number: S.0001.000 = +/-2^(-6)
- Max subnormal number: S.0000.111 = +/-2^(-6) x 0.875
- Min subnormal number: S.0000.001 = +/-2^(-6) x 0.125 = +/-2^(-9)
```
---
Patch is 31.33 KiB, truncated to 20.00 KiB below, full version:
https://github.com/llvm/llvm-project/pull/97118.diff
27 Files Affected:
- (modified) clang/lib/AST/MicrosoftMangle.cpp (+1)
- (modified) llvm/include/llvm/ADT/APFloat.h (+6)
- (modified) llvm/lib/Support/APFloat.cpp (+22-2)
- (modified) llvm/unittests/ADT/APFloatTest.cpp (+44-6)
- (modified) mlir/include/mlir-c/BuiltinTypes.h (+10)
- (modified) mlir/include/mlir/IR/Builders.h (+1)
- (modified) mlir/include/mlir/IR/BuiltinTypes.h (+9-4)
- (modified) mlir/include/mlir/IR/BuiltinTypes.td (+19)
- (modified) mlir/include/mlir/IR/CommonTypeConstraints.td (+2)
- (modified) mlir/include/mlir/IR/Types.h (+1)
- (modified) mlir/lib/AsmParser/TokenKinds.def (+1)
- (modified) mlir/lib/AsmParser/TypeParser.cpp (+4)
- (modified) mlir/lib/Bindings/Python/IRTypes.cpp (+22-1)
- (modified) mlir/lib/CAPI/IR/BuiltinTypes.cpp (+12)
- (modified) mlir/lib/Conversion/LLVMCommon/TypeConverter.cpp (+3-2)
- (modified) mlir/lib/Dialect/Arith/Transforms/EmulateUnsupportedFloats.cpp
(+1)
- (modified) mlir/lib/IR/AsmPrinter.cpp (+1)
- (modified) mlir/lib/IR/Builders.cpp (+4)
- (modified) mlir/lib/IR/BuiltinTypes.cpp (+5-2)
- (modified) mlir/lib/IR/MLIRContext.cpp (+5)
- (modified) mlir/lib/IR/Types.cpp (+1)
- (modified) mlir/python/mlir/_mlir_libs/_mlir/ir.pyi (+14)
- (modified) mlir/python/mlir/extras/types.py (+3-1)
- (modified) mlir/test/Target/LLVMIR/llvmir.mlir (+3)
- (modified) mlir/test/python/ir/builtin_types.py (+9)
- (modified) mlir/utils/lldb-scripts/mlirDataFormatters.py (+1)
- (modified) mlir/utils/tree-sitter-mlir/grammar.js (+2-1)
``````````diff
diff --git a/clang/lib/AST/MicrosoftMangle.cpp
b/clang/lib/AST/MicrosoftMangle.cpp
index 7f1e9ab02ec26..a2e270df276cb 100644
--- a/clang/lib/AST/MicrosoftMangle.cpp
+++ b/clang/lib/AST/MicrosoftMangle.cpp
@@ -946,6 +946,7 @@ void MicrosoftCXXNameMangler::mangleFloat(llvm::APFloat
Number) {
case APFloat::S_IEEEquad: Out << 'Y'; break;
case APFloat::S_PPCDoubleDouble: Out << 'Z'; break;
case APFloat::S_Float8E5M2:
+ case APFloat::S_Float8E4M3:
case APFloat::S_Float8E4M3FN:
case APFloat::S_Float8E5M2FNUZ:
case APFloat::S_Float8E4M3FNUZ:
diff --git a/llvm/include/llvm/ADT/APFloat.h b/llvm/include/llvm/ADT/APFloat.h
index db2fa480655c6..bff8e6490d1de 100644
--- a/llvm/include/llvm/ADT/APFloat.h
+++ b/llvm/include/llvm/ADT/APFloat.h
@@ -166,6 +166,9 @@ struct APFloatBase {
// This format's exponent bias is 16, instead of the 15 (2 ** (5 - 1) - 1)
// that IEEE precedent would imply.
S_Float8E5M2FNUZ,
+ // 8-bit floating point number following IEEE-754 conventions with bit
+ // layout S1E4M3.
+ S_Float8E4M3,
// 8-bit floating point number mostly following IEEE-754 conventions with
// bit layout S1E4M3 as described in https://arxiv.org/abs/2209.05433.
// Unlike IEEE-754 types, there are no infinity values, and NaN is
@@ -217,6 +220,7 @@ struct APFloatBase {
static const fltSemantics &PPCDoubleDouble() LLVM_READNONE;
static const fltSemantics &Float8E5M2() LLVM_READNONE;
static const fltSemantics &Float8E5M2FNUZ() LLVM_READNONE;
+ static const fltSemantics &Float8E4M3() LLVM_READNONE;
static const fltSemantics &Float8E4M3FN() LLVM_READNONE;
static const fltSemantics &Float8E4M3FNUZ() LLVM_READNONE;
static const fltSemantics &Float8E4M3B11FNUZ() LLVM_READNONE;
@@ -638,6 +642,7 @@ class IEEEFloat final : public APFloatBase {
APInt convertPPCDoubleDoubleAPFloatToAPInt() const;
APInt convertFloat8E5M2APFloatToAPInt() const;
APInt convertFloat8E5M2FNUZAPFloatToAPInt() const;
+ APInt convertFloat8E4M3APFloatToAPInt() const;
APInt convertFloat8E4M3FNAPFloatToAPInt() const;
APInt convertFloat8E4M3FNUZAPFloatToAPInt() const;
APInt convertFloat8E4M3B11FNUZAPFloatToAPInt() const;
@@ -656,6 +661,7 @@ class IEEEFloat final : public APFloatBase {
void initFromPPCDoubleDoubleAPInt(const APInt &api);
void initFromFloat8E5M2APInt(const APInt &api);
void initFromFloat8E5M2FNUZAPInt(const APInt &api);
+ void initFromFloat8E4M3APInt(const APInt &api);
void initFromFloat8E4M3FNAPInt(const APInt &api);
void initFromFloat8E4M3FNUZAPInt(const APInt &api);
void initFromFloat8E4M3B11FNUZAPInt(const APInt &api);
diff --git a/llvm/lib/Support/APFloat.cpp b/llvm/lib/Support/APFloat.cpp
index 47618bc325951..79e0094b243b2 100644
--- a/llvm/lib/Support/APFloat.cpp
+++ b/llvm/lib/Support/APFloat.cpp
@@ -83,8 +83,8 @@ enum class fltNanEncoding {
// exponent is all 1s and the significand is non-zero.
IEEE,
- // Represents the behavior in the Float8E4M3 floating point type where NaN is
- // represented by having the exponent and mantissa set to all 1s.
+ // Represents the behavior in the Float8E4M3FN floating point type where NaN
+ // is represented by having the exponent and mantissa set to all 1s.
// This behavior matches the FP8 E4M3 type described in
// https://arxiv.org/abs/2209.05433. We treat both signed and unsigned NaNs
// as non-signalling, although the paper does not state whether the NaN
@@ -136,6 +136,7 @@ static constexpr fltSemantics semIEEEquad = {16383, -16382,
113, 128};
static constexpr fltSemantics semFloat8E5M2 = {15, -14, 3, 8};
static constexpr fltSemantics semFloat8E5M2FNUZ = {
15, -15, 3, 8, fltNonfiniteBehavior::NanOnly,
fltNanEncoding::NegativeZero};
+static constexpr fltSemantics semFloat8E4M3 = {7, -6, 4, 8};
static constexpr fltSemantics semFloat8E4M3FN = {
8, -6, 4, 8, fltNonfiniteBehavior::NanOnly, fltNanEncoding::AllOnes};
static constexpr fltSemantics semFloat8E4M3FNUZ = {
@@ -208,6 +209,8 @@ const llvm::fltSemantics
&APFloatBase::EnumToSemantics(Semantics S) {
return Float8E5M2();
case S_Float8E5M2FNUZ:
return Float8E5M2FNUZ();
+ case S_Float8E4M3:
+ return Float8E4M3();
case S_Float8E4M3FN:
return Float8E4M3FN();
case S_Float8E4M3FNUZ:
@@ -246,6 +249,8 @@ APFloatBase::SemanticsToEnum(const llvm::fltSemantics &Sem)
{
return S_Float8E5M2;
else if (&Sem == &llvm::APFloat::Float8E5M2FNUZ())
return S_Float8E5M2FNUZ;
+ else if (&Sem == &llvm::APFloat::Float8E4M3())
+ return S_Float8E4M3;
else if (&Sem == &llvm::APFloat::Float8E4M3FN())
return S_Float8E4M3FN;
else if (&Sem == &llvm::APFloat::Float8E4M3FNUZ())
@@ -276,6 +281,7 @@ const fltSemantics &APFloatBase::PPCDoubleDouble() {
}
const fltSemantics &APFloatBase::Float8E5M2() { return semFloat8E5M2; }
const fltSemantics &APFloatBase::Float8E5M2FNUZ() { return semFloat8E5M2FNUZ; }
+const fltSemantics &APFloatBase::Float8E4M3() { return semFloat8E4M3; }
const fltSemantics &APFloatBase::Float8E4M3FN() { return semFloat8E4M3FN; }
const fltSemantics &APFloatBase::Float8E4M3FNUZ() { return semFloat8E4M3FNUZ; }
const fltSemantics &APFloatBase::Float8E4M3B11FNUZ() {
@@ -3617,6 +3623,11 @@ APInt IEEEFloat::convertFloat8E5M2FNUZAPFloatToAPInt()
const {
return convertIEEEFloatToAPInt<semFloat8E5M2FNUZ>();
}
+APInt IEEEFloat::convertFloat8E4M3APFloatToAPInt() const {
+ assert(partCount() == 1);
+ return convertIEEEFloatToAPInt<semFloat8E4M3>();
+}
+
APInt IEEEFloat::convertFloat8E4M3FNAPFloatToAPInt() const {
assert(partCount() == 1);
return convertIEEEFloatToAPInt<semFloat8E4M3FN>();
@@ -3681,6 +3692,9 @@ APInt IEEEFloat::bitcastToAPInt() const {
if (semantics == (const llvm::fltSemantics *)&semFloat8E5M2FNUZ)
return convertFloat8E5M2FNUZAPFloatToAPInt();
+ if (semantics == (const llvm::fltSemantics *)&semFloat8E4M3)
+ return convertFloat8E4M3APFloatToAPInt();
+
if (semantics == (const llvm::fltSemantics *)&semFloat8E4M3FN)
return convertFloat8E4M3FNAPFloatToAPInt();
@@ -3902,6 +3916,10 @@ void IEEEFloat::initFromFloat8E5M2FNUZAPInt(const APInt
&api) {
initFromIEEEAPInt<semFloat8E5M2FNUZ>(api);
}
+void IEEEFloat::initFromFloat8E4M3APInt(const APInt &api) {
+ initFromIEEEAPInt<semFloat8E4M3>(api);
+}
+
void IEEEFloat::initFromFloat8E4M3FNAPInt(const APInt &api) {
initFromIEEEAPInt<semFloat8E4M3FN>(api);
}
@@ -3951,6 +3969,8 @@ void IEEEFloat::initFromAPInt(const fltSemantics *Sem,
const APInt &api) {
return initFromFloat8E5M2APInt(api);
if (Sem == &semFloat8E5M2FNUZ)
return initFromFloat8E5M2FNUZAPInt(api);
+ if (Sem == &semFloat8E4M3)
+ return initFromFloat8E4M3APInt(api);
if (Sem == &semFloat8E4M3FN)
return initFromFloat8E4M3FNAPInt(api);
if (Sem == &semFloat8E4M3FNUZ)
diff --git a/llvm/unittests/ADT/APFloatTest.cpp
b/llvm/unittests/ADT/APFloatTest.cpp
index cf6bbd313c6c6..132e95bd45f77 100644
--- a/llvm/unittests/ADT/APFloatTest.cpp
+++ b/llvm/unittests/ADT/APFloatTest.cpp
@@ -2133,6 +2133,8 @@ TEST(APFloatTest, getZero) {
{&APFloat::Float8E5M2(), true, true, {0x80ULL, 0}, 1},
{&APFloat::Float8E5M2FNUZ(), false, false, {0, 0}, 1},
{&APFloat::Float8E5M2FNUZ(), true, false, {0, 0}, 1},
+ {&APFloat::Float8E4M3(), false, true, {0, 0}, 1},
+ {&APFloat::Float8E4M3(), true, true, {0x80ULL, 0}, 1},
{&APFloat::Float8E4M3FN(), false, true, {0, 0}, 1},
{&APFloat::Float8E4M3FN(), true, true, {0x80ULL, 0}, 1},
{&APFloat::Float8E4M3FNUZ(), false, false, {0, 0}, 1},
@@ -5508,8 +5510,8 @@ TEST(APFloatTest, ConvertE4M3FNToE5M2) {
EXPECT_TRUE(losesInfo);
EXPECT_EQ(status, APFloat::opInexact);
- // Convert E4M3 denormal to E5M2 normal. Should not be truncated, despite the
- // destination format having one fewer significand bit
+ // Convert E4M3FN denormal to E5M2 normal. Should not be truncated, despite
+ // the destination format having one fewer significand bit
test = APFloat(APFloat::Float8E4M3FN(), "0x1.Cp-7");
status = test.convert(APFloat::Float8E5M2(), APFloat::rmNearestTiesToEven,
&losesInfo);
@@ -5647,8 +5649,8 @@ TEST(APFloatTest, Float8E4M3FNAdd) {
int category;
APFloat::roundingMode roundingMode = APFloat::rmNearestTiesToEven;
} AdditionTests[] = {
- // Test addition operations involving NaN, overflow, and the max E4M3
- // value (448) because E4M3 differs from IEEE-754 types in these regards
+ // Test addition operations involving NaN, overflow, and the max E4M3FN
+ // value (448) because E4M3FN differs from IEEE-754 types in these
regards
{FromStr("448"), FromStr("16"), "448", APFloat::opInexact,
APFloat::fcNormal},
{FromStr("448"), FromStr("18"), "NaN",
@@ -6278,8 +6280,8 @@ TEST(APFloatTest, ConvertE4M3FNUZToE5M2FNUZ) {
EXPECT_TRUE(losesInfo);
EXPECT_EQ(status, APFloat::opInexact);
- // Convert E4M3 denormal to E5M2 normal. Should not be truncated, despite the
- // destination format having one fewer significand bit
+ // Convert E4M3FNUZ denormal to E5M2 normal. Should not be truncated, despite
+ // the destination format having one fewer significand bit
losesInfo = true;
test = APFloat(APFloat::Float8E4M3FNUZ(), "0x1.Cp-8");
status = test.convert(APFloat::Float8E5M2FNUZ(),
APFloat::rmNearestTiesToEven,
@@ -6846,6 +6848,42 @@ TEST(APFloatTest, Float8E5M2ToFloat) {
EXPECT_TRUE(std::isnan(QNaN.convertToFloat()));
}
+TEST(APFloatTest, Float8E4M3ToFloat) {
+ APFloat PosZero = APFloat::getZero(APFloat::Float8E4M3());
+ APFloat PosZeroToFloat(PosZero.convertToFloat());
+ EXPECT_TRUE(PosZeroToFloat.isPosZero());
+ APFloat NegZero = APFloat::getZero(APFloat::Float8E4M3(), true);
+ APFloat NegZeroToFloat(NegZero.convertToFloat());
+ EXPECT_TRUE(NegZeroToFloat.isNegZero());
+
+ APFloat One(APFloat::Float8E4M3(), "1.0");
+ EXPECT_EQ(1.0F, One.convertToFloat());
+ APFloat Two(APFloat::Float8E4M3(), "2.0");
+ EXPECT_EQ(2.0F, Two.convertToFloat());
+
+ APFloat PosLargest = APFloat::getLargest(APFloat::Float8E4M3(), false);
+ EXPECT_EQ(240.0F, PosLargest.convertToFloat());
+ APFloat NegLargest = APFloat::getLargest(APFloat::Float8E4M3(), true);
+ EXPECT_EQ(-240.0F, NegLargest.convertToFloat());
+ APFloat PosSmallest =
+ APFloat::getSmallestNormalized(APFloat::Float8E4M3(), false);
+ EXPECT_EQ(0x1.p-6, PosSmallest.convertToFloat());
+ APFloat NegSmallest =
+ APFloat::getSmallestNormalized(APFloat::Float8E4M3(), true);
+ EXPECT_EQ(-0x1.p-6, NegSmallest.convertToFloat());
+
+ APFloat SmallestDenorm = APFloat::getSmallest(APFloat::Float8E4M3(), false);
+ EXPECT_TRUE(SmallestDenorm.isDenormal());
+ EXPECT_EQ(0x1.p-9, SmallestDenorm.convertToFloat());
+
+ APFloat PosInf = APFloat::getInf(APFloat::Float8E4M3());
+ EXPECT_EQ(std::numeric_limits<float>::infinity(), PosInf.convertToFloat());
+ APFloat NegInf = APFloat::getInf(APFloat::Float8E4M3(), true);
+ EXPECT_EQ(-std::numeric_limits<float>::infinity(), NegInf.convertToFloat());
+ APFloat QNaN = APFloat::getQNaN(APFloat::Float8E4M3());
+ EXPECT_TRUE(std::isnan(QNaN.convertToFloat()));
+}
+
TEST(APFloatTest, Float8E4M3FNToFloat) {
APFloat PosZero = APFloat::getZero(APFloat::Float8E4M3FN());
APFloat PosZeroToFloat(PosZero.convertToFloat());
diff --git a/mlir/include/mlir-c/BuiltinTypes.h
b/mlir/include/mlir-c/BuiltinTypes.h
index 99c5e3f46b04c..2212087b9898f 100644
--- a/mlir/include/mlir-c/BuiltinTypes.h
+++ b/mlir/include/mlir-c/BuiltinTypes.h
@@ -89,6 +89,16 @@ MLIR_CAPI_EXPORTED bool mlirTypeIsAFloat8E5M2(MlirType type);
/// context.
MLIR_CAPI_EXPORTED MlirType mlirFloat8E5M2TypeGet(MlirContext ctx);
+/// Returns the typeID of an Float8E4M3 type.
+MLIR_CAPI_EXPORTED MlirTypeID mlirFloat8E4M3TypeGetTypeID(void);
+
+/// Checks whether the given type is an f8E4M3 type.
+MLIR_CAPI_EXPORTED bool mlirTypeIsAFloat8E4M3(MlirType type);
+
+/// Creates an f8E4M3 type in the given context. The type is owned by the
+/// context.
+MLIR_CAPI_EXPORTED MlirType mlirFloat8E4M3TypeGet(MlirContext ctx);
+
/// Returns the typeID of an Float8E4M3FN type.
MLIR_CAPI_EXPORTED MlirTypeID mlirFloat8E4M3FNTypeGetTypeID(void);
diff --git a/mlir/include/mlir/IR/Builders.h b/mlir/include/mlir/IR/Builders.h
index 0d5fa719d0dee..1c4d329fbf0d8 100644
--- a/mlir/include/mlir/IR/Builders.h
+++ b/mlir/include/mlir/IR/Builders.h
@@ -61,6 +61,7 @@ class Builder {
// Types.
FloatType getFloat8E5M2Type();
+ FloatType getFloat8E4M3Type();
FloatType getFloat8E4M3FNType();
FloatType getFloat8E5M2FNUZType();
FloatType getFloat8E4M3FNUZType();
diff --git a/mlir/include/mlir/IR/BuiltinTypes.h
b/mlir/include/mlir/IR/BuiltinTypes.h
index 5579b138668d2..f4c05cafa1fd9 100644
--- a/mlir/include/mlir/IR/BuiltinTypes.h
+++ b/mlir/include/mlir/IR/BuiltinTypes.h
@@ -56,6 +56,7 @@ class FloatType : public Type {
static FloatType getF80(MLIRContext *ctx);
static FloatType getF128(MLIRContext *ctx);
static FloatType getFloat8E5M2(MLIRContext *ctx);
+ static FloatType getFloat8E4M3(MLIRContext *ctx);
static FloatType getFloat8E4M3FN(MLIRContext *ctx);
static FloatType getFloat8E5M2FNUZ(MLIRContext *ctx);
static FloatType getFloat8E4M3FNUZ(MLIRContext *ctx);
@@ -405,16 +406,20 @@ inline bool BaseMemRefType::isValidElementType(Type type)
{
}
inline bool FloatType::classof(Type type) {
- return llvm::isa<Float8E5M2Type, Float8E4M3FNType, Float8E5M2FNUZType,
- Float8E4M3FNUZType, Float8E4M3B11FNUZType, BFloat16Type,
- Float16Type, FloatTF32Type, Float32Type, Float64Type,
- Float80Type, Float128Type>(type);
+ return llvm::isa<
+ Float8E5M2Type, Float8E4M3Type, Float8E4M3FNType, Float8E5M2FNUZType,
+ Float8E4M3FNUZType, Float8E4M3B11FNUZType, BFloat16Type, Float16Type,
+ FloatTF32Type, Float32Type, Float64Type, Float80Type,
Float128Type>(type);
}
inline FloatType FloatType::getFloat8E5M2(MLIRContext *ctx) {
return Float8E5M2Type::get(ctx);
}
+inline FloatType FloatType::getFloat8E4M3(MLIRContext *ctx) {
+ return Float8E4M3Type::get(ctx);
+}
+
inline FloatType FloatType::getFloat8E4M3FN(MLIRContext *ctx) {
return Float8E4M3FNType::get(ctx);
}
diff --git a/mlir/include/mlir/IR/BuiltinTypes.td
b/mlir/include/mlir/IR/BuiltinTypes.td
index 4cade83dd3c32..2eed105e81f05 100644
--- a/mlir/include/mlir/IR/BuiltinTypes.td
+++ b/mlir/include/mlir/IR/BuiltinTypes.td
@@ -97,6 +97,25 @@ def Builtin_Float8E5M2 : Builtin_FloatType<"Float8E5M2",
"f8E5M2"> {
}];
}
+//===----------------------------------------------------------------------===//
+// Float8E4M3Type
+
+def Builtin_Float8E4M3 : Builtin_FloatType<"Float8E4M3", "f8E4M3"> {
+ let summary = "8-bit floating point with 3 bit mantissa";
+ let description = [{
+ An 8-bit floating point type with 1 sign bit, 4 bits exponent and 3 bits
+ mantissa. This is not a standard type as defined by IEEE-754, but it
+ follows similar conventions with the following characteristics:
+
+ * bit encoding: S1E4M3
+ * exponent bias: 7
+ * infinities: supported with exponent set to all 1s and mantissa 0s
+ * NaNs: supported with exponent bits set to all 1s and mantissa of
+ (001, 010, 011, 100, 101, 110, 111)
+ * denormals when exponent is 0
+ }];
+}
+
//===----------------------------------------------------------------------===//
// Float8E4M3FNType
diff --git a/mlir/include/mlir/IR/CommonTypeConstraints.td
b/mlir/include/mlir/IR/CommonTypeConstraints.td
index af4f13dc09360..cac37c8fec4d3 100644
--- a/mlir/include/mlir/IR/CommonTypeConstraints.td
+++ b/mlir/include/mlir/IR/CommonTypeConstraints.td
@@ -331,6 +331,8 @@ def F8E4M3FN : Type<CPred<"$_self.isFloat8E4M3FN()">,
"f8E4M3FN type">,
BuildableType<"$_builder.getFloat8E4M3FNType()">;
def F8E5M2 : Type<CPred<"$_self.isFloat8E5M2()">, "f8E5M2 type">,
BuildableType<"$_builder.getFloat8E5M2Type()">;
+def F8E4M3 : Type<CPred<"$_self.isFloat8E4M3()">, "f8E4M3 type">,
+ BuildableType<"$_builder.getFloat8E4M3Type()">;
def F8E4M3FNUZ : Type<CPred<"$_self.isFloat8E4M3FNUZ()">, "f8E4M3FNUZ type">,
BuildableType<"$_builder.getFloat8E4M3FNUZType()">;
def F8E4M3B11FNUZ : Type<CPred<"$_self.isFloat8E4M3B11FNUZ()">, "f8E4M3B11FNUZ
type">,
diff --git a/mlir/include/mlir/IR/Types.h b/mlir/include/mlir/IR/Types.h
index 65824531fdc90..a32de33114e40 100644
--- a/mlir/include/mlir/IR/Types.h
+++ b/mlir/include/mlir/IR/Types.h
@@ -126,6 +126,7 @@ class Type {
// derived types should use isa/dyn_cast.
bool isIndex() const;
bool isFloat8E5M2() const;
+ bool isFloat8E4M3() const;
bool isFloat8E4M3FN() const;
bool isFloat8E5M2FNUZ() const;
bool isFloat8E4M3FNUZ() const;
diff --git a/mlir/lib/AsmParser/TokenKinds.def
b/mlir/lib/AsmParser/TokenKinds.def
index 297e074594530..eb3154c6da42e 100644
--- a/mlir/lib/AsmParser/TokenKinds.def
+++ b/mlir/lib/AsmParser/TokenKinds.def
@@ -95,6 +95,7 @@ TOK_KEYWORD(f32)
TOK_KEYWORD(f64)
TOK_KEYWORD(f80)
TOK_KEYWORD(f8E5M2)
+TOK_KEYWORD(f8E4M3)
TOK_KEYWORD(f8E4M3FN)
TOK_KEYWORD(f8E5M2FNUZ)
TOK_KEYWORD(f8E4M3FNUZ)
diff --git a/mlir/lib/AsmParser/TypeParser.cpp
b/mlir/lib/AsmParser/TypeParser.cpp
index 5da931b77b3be..90ba56af670f6 100644
--- a/mlir/lib/AsmParser/TypeParser.cpp
+++ b/mlir/lib/AsmParser/TypeParser.cpp
@@ -41,6 +41,7 @@ OptionalParseResult Parser::parseOptionalType(Type &type) {
case Token::kw_vector:
case Token::inttype:
case Token::kw_f8E5M2:
+ case Token::kw_f8E4M3:
case Token::kw_f8E4M3FN:
case Token::kw_f8E5M2FNUZ:
case Token::kw_f8E4M3FNUZ:
@@ -305,6 +306,9 @@ Type Parser::parseNonFunctionType() {
case Token::kw_f8E5M2:
consumeToken(Token::kw_f8E5M2);
return builder.getFloat8E5M2Type();
+ case Token::kw_f8E4M3:
+ consumeToken(Token::kw_f8E4M3);
+ return builder.getFloat8E4M3Type();
case Token::kw_f8E4M3FN:
consumeToken(Token::kw_f8E4M3FN);
return builder.getFloat8E4M3FNType();
diff --git a/mlir/lib/Bindings/Python/IRTypes.cpp
b/mlir/lib/Bindings/Python/IRTypes.cpp
index e1e4eb999b3aa..5e0aebc03e2c1 100644
--- a/mlir/lib/Bindings/Python/IRTypes.cpp
+++ b/mlir/lib/Bindings/Python/IRTypes.cpp
@@ -143,7 +143,7 @@ class PyFloat8E4M3FNType
}
};
-/// Floating Point Type subclass - Float8M5E2Type.
+/// Floating Point Type subclass - Float8E5M2Type.
class PyFloat8E5M2Type : public PyConcreteType<PyFloat8E5M2Type, PyFloatType> {
public:
static constexpr IsAFunctionTy isaFunction = mlirTypeIsAFloat8E5M2;
@@ -163,6 +163,26 @@ class PyFloat8E5M2Type : public
PyConcreteType<PyFloat8E5M2Type, PyFloatType> {
}
};
+/// Floating Point Type subclass - Float8E4M3Type.
+class PyFloat8E4M3Type : public PyConcreteType<PyFloat8E4M3Type, PyFloatType> {
+public:
+ static constexpr IsAFunctionTy isaFunction = mlirTypeIsAFloat8E4M3;
+ static constexpr GetTypeIDFunctionTy getTypeIdFunction =
+ mlirFloat8E4M3TypeGetTypeID;
+ static constexpr const char *pyClassName = "Float8E4M3Type";
+ using PyConcreteType::PyConcreteType;
+
+ static void bindDerived(ClassTy &c) {
+ c.def_static(
+ "get",
+ [](DefaultingPyMlirContext context) {
+ MlirType t = mlirFloat8E4M3TypeGet(context->get());
+ return PyFloat8E4M3Type(context->getRef(), t);
+ },
+ py::arg("context") = py::none(), "Create a float8_e4m3 type.");
+ }
+};
+
/// Floating Point Type subclass - Float8E4M3FNUZ.
class PyFloat8E4M3FNUZType
: public PyConcreteType<PyFloat8E4M3FNUZType, PyFloatType> {
@@ -840,6 +860,7 @@ void mlir::python::populateIRTypes(py::module &m) {
PyIndexType::bind(m);
PyFloat8E4M3FNType::bind(m);
PyFloat8E5M2Type::bind(m);
+ PyFloat8E4M3Type::bind(m);
PyFloat8E4M3FNUZType::bind(m);
PyFloat8E4M3B11FNUZType::bind(m);
PyFloat8E5M2FNUZType::bind(m);
diff --git a/mlir/lib/CAPI/IR/BuiltinTypes.cpp
b/mlir/lib/CAPI/IR/BuiltinTypes.cpp
index c94c070144a7e..6e22caca78ff1 100644
--- a/mlir/lib/CAPI/IR/BuiltinTypes.cpp
+++ b/mlir/lib/CAPI/IR/BuiltinTypes.cpp
@@ -98,6 +98,18 @@ MlirType mlirFloat8E5M2TypeGet(MlirContext ctx) {
return wrap(FloatType::getFloat8E5M2(unwrap(ctx)));
}
+MlirTypeID mlirFloat8E4M3TypeGetTypeID() {
+ return wrap(Float8E4M3Type::getTypeID());
+}
+
+bool mlirTypeIsAFloat8E4M3(MlirType type) {
+ return unwrap(type).isFloat8E4M3();
+}
+
+MlirType mlirFloat8E4M3TypeGet(MlirContext ctx) {
+ return wrap(FloatType:...
[truncated]
``````````
</details>
https://github.com/llvm/llvm-project/pull/97118
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