[Mlir-commits] [mlir] [mlir][arith] Add overflow flags support to arith ops (PR #78376)
llvmlistbot at llvm.org
llvmlistbot at llvm.org
Tue Jan 16 17:52:58 PST 2024
llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-mlir
@llvm/pr-subscribers-mlir-arith
Author: Jacques Pienaar (jpienaar)
<details>
<summary>Changes</summary>
Add overflow flags support to the following ops:
* `arith.addi`
* `arith.subi`
* `arith.muli`
Example of new syntax:
```
%res = arith.addi %arg1, %arg2 overflow<nsw> : i64
```
Similar to existing LLVM dialect syntax
```
%res = llvm.add %arg1, %arg2 overflow<nsw> : i64
```
Tablegen canonicalization patterns updated to always drop flags, proper support with tests will be added later.
Updated LLVMIR translation as part of this commit as it currenly written in a way that it will crash when new attributes added to arith ops otherwise.
Also lower `arith` overflow flags to corresponding SPIR-V op decorations
Discussion
https://discourse.llvm.org/t/rfc-integer-overflow-flags-support-in-arith-dialect/76025
This effectively rolls forward #<!-- -->77211, #<!-- -->77700 and #<!-- -->77714 while adding a test to ensure the Python usage is not broken. More follow up needed but unrelated to the core change here. The changes here are minimal and just correspond to "textual namespacing" ODS side, no C++ or Python changes were needed.
---------
---
Patch is 38.63 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/78376.diff
15 Files Affected:
- (modified) mlir/include/mlir/Conversion/ArithCommon/AttrToLLVMConverter.h (+42-5)
- (modified) mlir/include/mlir/Dialect/Arith/IR/ArithBase.td (+23)
- (modified) mlir/include/mlir/Dialect/Arith/IR/ArithOps.td (+81-20)
- (modified) mlir/include/mlir/Dialect/Arith/IR/ArithOpsInterfaces.td (+57)
- (modified) mlir/include/mlir/Dialect/LLVMIR/LLVMInterfaces.td (+1-1)
- (modified) mlir/lib/Conversion/ArithCommon/AttrToLLVMConverter.cpp (+24-5)
- (modified) mlir/lib/Conversion/ArithToLLVM/ArithToLLVM.cpp (+9-3)
- (modified) mlir/lib/Conversion/ArithToSPIRV/ArithToSPIRV.cpp (+56-3)
- (modified) mlir/lib/Dialect/Arith/IR/ArithCanonicalization.td (+55-39)
- (modified) mlir/lib/Dialect/Arith/IR/ArithOps.cpp (+5)
- (modified) mlir/test/Conversion/ArithToLLVM/arith-to-llvm.mlir (+13)
- (modified) mlir/test/Conversion/ArithToSPIRV/arith-to-spirv.mlir (+40)
- (modified) mlir/test/Dialect/Arith/ops.mlir (+11)
- (added) mlir/test/python/dialects/arith_llvm.py (+28)
- (modified) mlir/test/python/ir/diagnostic_handler.py (+1-1)
``````````diff
diff --git a/mlir/include/mlir/Conversion/ArithCommon/AttrToLLVMConverter.h b/mlir/include/mlir/Conversion/ArithCommon/AttrToLLVMConverter.h
index eea16b4da6a690..32d7979c32dfb2 100644
--- a/mlir/include/mlir/Conversion/ArithCommon/AttrToLLVMConverter.h
+++ b/mlir/include/mlir/Conversion/ArithCommon/AttrToLLVMConverter.h
@@ -18,14 +18,24 @@
namespace mlir {
namespace arith {
-// Map arithmetic fastmath enum values to LLVMIR enum values.
+/// Maps arithmetic fastmath enum values to LLVM enum values.
LLVM::FastmathFlags
convertArithFastMathFlagsToLLVM(arith::FastMathFlags arithFMF);
-// Create an LLVM fastmath attribute from a given arithmetic fastmath attribute.
+/// Creates an LLVM fastmath attribute from a given arithmetic fastmath
+/// attribute.
LLVM::FastmathFlagsAttr
convertArithFastMathAttrToLLVM(arith::FastMathFlagsAttr fmfAttr);
+/// Maps arithmetic overflow enum values to LLVM enum values.
+LLVM::IntegerOverflowFlags
+convertArithOverflowFlagsToLLVM(arith::IntegerOverflowFlags arithFlags);
+
+/// Creates an LLVM overflow attribute from a given arithmetic overflow
+/// attribute.
+LLVM::IntegerOverflowFlagsAttr
+convertArithOverflowAttrToLLVM(arith::IntegerOverflowFlagsAttr flagsAttr);
+
// Attribute converter that populates a NamedAttrList by removing the fastmath
// attribute from the source operation attributes, and replacing it with an
// equivalent LLVM fastmath attribute.
@@ -36,12 +46,12 @@ class AttrConvertFastMathToLLVM {
// Copy the source attributes.
convertedAttr = NamedAttrList{srcOp->getAttrs()};
// Get the name of the arith fastmath attribute.
- llvm::StringRef arithFMFAttrName = SourceOp::getFastMathAttrName();
+ StringRef arithFMFAttrName = SourceOp::getFastMathAttrName();
// Remove the source fastmath attribute.
- auto arithFMFAttr = dyn_cast_or_null<arith::FastMathFlagsAttr>(
+ auto arithFMFAttr = dyn_cast_if_present<arith::FastMathFlagsAttr>(
convertedAttr.erase(arithFMFAttrName));
if (arithFMFAttr) {
- llvm::StringRef targetAttrName = TargetOp::getFastmathAttrName();
+ StringRef targetAttrName = TargetOp::getFastmathAttrName();
convertedAttr.set(targetAttrName,
convertArithFastMathAttrToLLVM(arithFMFAttr));
}
@@ -49,6 +59,33 @@ class AttrConvertFastMathToLLVM {
ArrayRef<NamedAttribute> getAttrs() const { return convertedAttr.getAttrs(); }
+private:
+ NamedAttrList convertedAttr;
+};
+
+// Attribute converter that populates a NamedAttrList by removing the overflow
+// attribute from the source operation attributes, and replacing it with an
+// equivalent LLVM overflow attribute.
+template <typename SourceOp, typename TargetOp>
+class AttrConvertOverflowToLLVM {
+public:
+ AttrConvertOverflowToLLVM(SourceOp srcOp) {
+ // Copy the source attributes.
+ convertedAttr = NamedAttrList{srcOp->getAttrs()};
+ // Get the name of the arith overflow attribute.
+ StringRef arithAttrName = SourceOp::getIntegerOverflowAttrName();
+ // Remove the source overflow attribute.
+ auto arithAttr = dyn_cast_if_present<arith::IntegerOverflowFlagsAttr>(
+ convertedAttr.erase(arithAttrName));
+ if (arithAttr) {
+ StringRef targetAttrName = TargetOp::getIntegerOverflowAttrName();
+ convertedAttr.set(targetAttrName,
+ convertArithOverflowAttrToLLVM(arithAttr));
+ }
+ }
+
+ ArrayRef<NamedAttribute> getAttrs() const { return convertedAttr.getAttrs(); }
+
private:
NamedAttrList convertedAttr;
};
diff --git a/mlir/include/mlir/Dialect/Arith/IR/ArithBase.td b/mlir/include/mlir/Dialect/Arith/IR/ArithBase.td
index 1e4061392b22d4..c8a42c43c880b0 100644
--- a/mlir/include/mlir/Dialect/Arith/IR/ArithBase.td
+++ b/mlir/include/mlir/Dialect/Arith/IR/ArithBase.td
@@ -133,4 +133,27 @@ def Arith_FastMathAttr :
let assemblyFormat = "`<` $value `>`";
}
+//===----------------------------------------------------------------------===//
+// Arith_IntegerOverflowFlags
+//===----------------------------------------------------------------------===//
+
+def Arith_IOFnone : I32BitEnumAttrCaseNone<"none">;
+def Arith_IOFnsw : I32BitEnumAttrCaseBit<"nsw", 0>;
+def Arith_IOFnuw : I32BitEnumAttrCaseBit<"nuw", 1>;
+
+def Arith_IntegerOverflowFlags : I32BitEnumAttr<
+ "IntegerOverflowFlags",
+ "Integer overflow arith flags",
+ [Arith_IOFnone, Arith_IOFnsw, Arith_IOFnuw]> {
+ let separator = ", ";
+ let cppNamespace = "::mlir::arith";
+ let genSpecializedAttr = 0;
+ let printBitEnumPrimaryGroups = 1;
+}
+
+def Arith_IntegerOverflowAttr :
+ EnumAttr<Arith_Dialect, Arith_IntegerOverflowFlags, "overflow"> {
+ let assemblyFormat = "`<` $value `>`";
+}
+
#endif // ARITH_BASE
diff --git a/mlir/include/mlir/Dialect/Arith/IR/ArithOps.td b/mlir/include/mlir/Dialect/Arith/IR/ArithOps.td
index 6d133d69dd0faf..cd0102f91ef152 100644
--- a/mlir/include/mlir/Dialect/Arith/IR/ArithOps.td
+++ b/mlir/include/mlir/Dialect/Arith/IR/ArithOps.td
@@ -137,6 +137,20 @@ class Arith_CompareOpOfAnyRank<string mnemonic, list<Trait> traits = []> :
let results = (outs BoolLikeOfAnyRank:$result);
}
+class Arith_IntBinaryOpWithOverflowFlags<string mnemonic, list<Trait> traits = []> :
+ Arith_BinaryOp<mnemonic, traits #
+ [Pure, DeclareOpInterfaceMethods<InferIntRangeInterface>,
+ DeclareOpInterfaceMethods<ArithIntegerOverflowFlagsInterface>]>,
+ Arguments<(ins SignlessIntegerLike:$lhs, SignlessIntegerLike:$rhs,
+ DefaultValuedAttr<
+ Arith_IntegerOverflowAttr,
+ "::mlir::arith::IntegerOverflowFlags::none">:$overflowFlags)>,
+ Results<(outs SignlessIntegerLike:$result)> {
+
+ let assemblyFormat = [{ $lhs `,` $rhs (`overflow` `` $overflowFlags^)?
+ attr-dict `:` type($result) }];
+}
+
//===----------------------------------------------------------------------===//
// ConstantOp
//===----------------------------------------------------------------------===//
@@ -192,7 +206,7 @@ def Arith_ConstantOp : Op<Arith_Dialect, "constant",
// AddIOp
//===----------------------------------------------------------------------===//
-def Arith_AddIOp : Arith_TotalIntBinaryOp<"addi", [Commutative]> {
+def Arith_AddIOp : Arith_IntBinaryOpWithOverflowFlags<"addi", [Commutative]> {
let summary = "integer addition operation";
let description = [{
Performs N-bit addition on the operands. The operands are interpreted as
@@ -203,8 +217,12 @@ def Arith_AddIOp : Arith_TotalIntBinaryOp<"addi", [Commutative]> {
The `addi` operation takes two operands and returns one result, each of
these is required to be the same type. This type may be an integer scalar type,
- a vector whose element type is integer, or a tensor of integers. It has no
- standard attributes.
+ a vector whose element type is integer, or a tensor of integers.
+
+ This op supports `nuw`/`nsw` overflow flags which stands stand for
+ "No Unsigned Wrap" and "No Signed Wrap", respectively. If the `nuw` and/or
+ `nsw` flags are present, and an unsigned/signed overflow occurs
+ (respectively), the result is poison.
Example:
@@ -212,7 +230,10 @@ def Arith_AddIOp : Arith_TotalIntBinaryOp<"addi", [Commutative]> {
// Scalar addition.
%a = arith.addi %b, %c : i64
- // SIMD vector element-wise addition, e.g. for Intel SSE.
+ // Scalar addition with overflow flags.
+ %a = arith.addi %b, %c overflow<nsw, nuw> : i64
+
+ // SIMD vector element-wise addition.
%f = arith.addi %g, %h : vector<4xi32>
// Tensor element-wise addition.
@@ -278,21 +299,41 @@ def Arith_AddUIExtendedOp : Arith_Op<"addui_extended", [Pure, Commutative,
// SubIOp
//===----------------------------------------------------------------------===//
-def Arith_SubIOp : Arith_TotalIntBinaryOp<"subi"> {
+def Arith_SubIOp : Arith_IntBinaryOpWithOverflowFlags<"subi"> {
let summary = [{
Integer subtraction operation.
}];
let description = [{
- Performs N-bit subtraction on the operands. The operands are interpreted as unsigned
- bitvectors. The result is represented by a bitvector containing the mathematical
- value of the subtraction modulo 2^n, where `n` is the bitwidth. Because `arith`
- integers use a two's complement representation, this operation is applicable on
+ Performs N-bit subtraction on the operands. The operands are interpreted as unsigned
+ bitvectors. The result is represented by a bitvector containing the mathematical
+ value of the subtraction modulo 2^n, where `n` is the bitwidth. Because `arith`
+ integers use a two's complement representation, this operation is applicable on
both signed and unsigned integer operands.
The `subi` operation takes two operands and returns one result, each of
- these is required to be the same type. This type may be an integer scalar type,
- a vector whose element type is integer, or a tensor of integers. It has no
- standard attributes.
+ these is required to be the same type. This type may be an integer scalar type,
+ a vector whose element type is integer, or a tensor of integers.
+
+ This op supports `nuw`/`nsw` overflow flags which stands stand for
+ "No Unsigned Wrap" and "No Signed Wrap", respectively. If the `nuw` and/or
+ `nsw` flags are present, and an unsigned/signed overflow occurs
+ (respectively), the result is poison.
+
+ Example:
+
+ ```mlir
+ // Scalar subtraction.
+ %a = arith.subi %b, %c : i64
+
+ // Scalar subtraction with overflow flags.
+ %a = arith.subi %b, %c overflow<nsw, nuw> : i64
+
+ // SIMD vector element-wise subtraction.
+ %f = arith.subi %g, %h : vector<4xi32>
+
+ // Tensor element-wise subtraction.
+ %x = arith.subi %y, %z : tensor<4x?xi8>
+ ```
}];
let hasFolder = 1;
let hasCanonicalizer = 1;
@@ -302,21 +343,41 @@ def Arith_SubIOp : Arith_TotalIntBinaryOp<"subi"> {
// MulIOp
//===----------------------------------------------------------------------===//
-def Arith_MulIOp : Arith_TotalIntBinaryOp<"muli", [Commutative]> {
+def Arith_MulIOp : Arith_IntBinaryOpWithOverflowFlags<"muli", [Commutative]> {
let summary = [{
Integer multiplication operation.
}];
let description = [{
- Performs N-bit multiplication on the operands. The operands are interpreted as
- unsigned bitvectors. The result is represented by a bitvector containing the
- mathematical value of the multiplication modulo 2^n, where `n` is the bitwidth.
- Because `arith` integers use a two's complement representation, this operation is
+ Performs N-bit multiplication on the operands. The operands are interpreted as
+ unsigned bitvectors. The result is represented by a bitvector containing the
+ mathematical value of the multiplication modulo 2^n, where `n` is the bitwidth.
+ Because `arith` integers use a two's complement representation, this operation is
applicable on both signed and unsigned integer operands.
The `muli` operation takes two operands and returns one result, each of
- these is required to be the same type. This type may be an integer scalar type,
- a vector whose element type is integer, or a tensor of integers. It has no
- standard attributes.
+ these is required to be the same type. This type may be an integer scalar type,
+ a vector whose element type is integer, or a tensor of integers.
+
+ This op supports `nuw`/`nsw` overflow flags which stands stand for
+ "No Unsigned Wrap" and "No Signed Wrap", respectively. If the `nuw` and/or
+ `nsw` flags are present, and an unsigned/signed overflow occurs
+ (respectively), the result is poison.
+
+ Example:
+
+ ```mlir
+ // Scalar multiplication.
+ %a = arith.muli %b, %c : i64
+
+ // Scalar multiplication with overflow flags.
+ %a = arith.muli %b, %c overflow<nsw, nuw> : i64
+
+ // SIMD vector element-wise multiplication.
+ %f = arith.muli %g, %h : vector<4xi32>
+
+ // Tensor element-wise multiplication.
+ %x = arith.muli %y, %z : tensor<4x?xi8>
+ ```
}];
let hasFolder = 1;
let hasCanonicalizer = 1;
diff --git a/mlir/include/mlir/Dialect/Arith/IR/ArithOpsInterfaces.td b/mlir/include/mlir/Dialect/Arith/IR/ArithOpsInterfaces.td
index acaecf6f409dcf..73a5d9c32ef205 100644
--- a/mlir/include/mlir/Dialect/Arith/IR/ArithOpsInterfaces.td
+++ b/mlir/include/mlir/Dialect/Arith/IR/ArithOpsInterfaces.td
@@ -49,4 +49,61 @@ def ArithFastMathInterface : OpInterface<"ArithFastMathInterface"> {
];
}
+def ArithIntegerOverflowFlagsInterface : OpInterface<"ArithIntegerOverflowFlagsInterface"> {
+ let description = [{
+ Access to op integer overflow flags.
+ }];
+
+ let cppNamespace = "::mlir::arith";
+
+ let methods = [
+ InterfaceMethod<
+ /*desc=*/ "Returns an IntegerOverflowFlagsAttr attribute for the operation",
+ /*returnType=*/ "IntegerOverflowFlagsAttr",
+ /*methodName=*/ "getOverflowAttr",
+ /*args=*/ (ins),
+ /*methodBody=*/ [{}],
+ /*defaultImpl=*/ [{
+ auto op = cast<ConcreteOp>(this->getOperation());
+ return op.getOverflowFlagsAttr();
+ }]
+ >,
+ InterfaceMethod<
+ /*desc=*/ "Returns whether the operation has the No Unsigned Wrap keyword",
+ /*returnType=*/ "bool",
+ /*methodName=*/ "hasNoUnsignedWrap",
+ /*args=*/ (ins),
+ /*methodBody=*/ [{}],
+ /*defaultImpl=*/ [{
+ auto op = cast<ConcreteOp>(this->getOperation());
+ IntegerOverflowFlags flags = op.getOverflowFlagsAttr().getValue();
+ return bitEnumContainsAll(flags, IntegerOverflowFlags::nuw);
+ }]
+ >,
+ InterfaceMethod<
+ /*desc=*/ "Returns whether the operation has the No Signed Wrap keyword",
+ /*returnType=*/ "bool",
+ /*methodName=*/ "hasNoSignedWrap",
+ /*args=*/ (ins),
+ /*methodBody=*/ [{}],
+ /*defaultImpl=*/ [{
+ auto op = cast<ConcreteOp>(this->getOperation());
+ IntegerOverflowFlags flags = op.getOverflowFlagsAttr().getValue();
+ return bitEnumContainsAll(flags, IntegerOverflowFlags::nsw);
+ }]
+ >,
+ StaticInterfaceMethod<
+ /*desc=*/ [{Returns the name of the IntegerOverflowFlagsAttr attribute
+ for the operation}],
+ /*returnType=*/ "StringRef",
+ /*methodName=*/ "getIntegerOverflowAttrName",
+ /*args=*/ (ins),
+ /*methodBody=*/ [{}],
+ /*defaultImpl=*/ [{
+ return "overflowFlags";
+ }]
+ >
+ ];
+}
+
#endif // ARITH_OPS_INTERFACES
diff --git a/mlir/include/mlir/Dialect/LLVMIR/LLVMInterfaces.td b/mlir/include/mlir/Dialect/LLVMIR/LLVMInterfaces.td
index 81589eaf5fd0a4..3b2a132a881e4e 100644
--- a/mlir/include/mlir/Dialect/LLVMIR/LLVMInterfaces.td
+++ b/mlir/include/mlir/Dialect/LLVMIR/LLVMInterfaces.td
@@ -92,7 +92,7 @@ def IntegerOverflowFlagsInterface : OpInterface<"IntegerOverflowFlagsInterface">
}]
>,
StaticInterfaceMethod<
- /*desc=*/ [{Returns the name of the IntegerOveflowFlagsAttr attribute
+ /*desc=*/ [{Returns the name of the IntegerOverflowFlagsAttr attribute
for the operation}],
/*returnType=*/ "StringRef",
/*methodName=*/ "getIntegerOverflowAttrName",
diff --git a/mlir/lib/Conversion/ArithCommon/AttrToLLVMConverter.cpp b/mlir/lib/Conversion/ArithCommon/AttrToLLVMConverter.cpp
index 8c5d76f9f2d72e..dab064a3a954ec 100644
--- a/mlir/lib/Conversion/ArithCommon/AttrToLLVMConverter.cpp
+++ b/mlir/lib/Conversion/ArithCommon/AttrToLLVMConverter.cpp
@@ -10,7 +10,6 @@
using namespace mlir;
-// Map arithmetic fastmath enum values to LLVMIR enum values.
LLVM::FastmathFlags
mlir::arith::convertArithFastMathFlagsToLLVM(arith::FastMathFlags arithFMF) {
LLVM::FastmathFlags llvmFMF{};
@@ -22,17 +21,37 @@ mlir::arith::convertArithFastMathFlagsToLLVM(arith::FastMathFlags arithFMF) {
{arith::FastMathFlags::contract, LLVM::FastmathFlags::contract},
{arith::FastMathFlags::afn, LLVM::FastmathFlags::afn},
{arith::FastMathFlags::reassoc, LLVM::FastmathFlags::reassoc}};
- for (auto fmfMap : flags) {
- if (bitEnumContainsAny(arithFMF, fmfMap.first))
- llvmFMF = llvmFMF | fmfMap.second;
+ for (auto [arithFlag, llvmFlag] : flags) {
+ if (bitEnumContainsAny(arithFMF, arithFlag))
+ llvmFMF = llvmFMF | llvmFlag;
}
return llvmFMF;
}
-// Create an LLVM fastmath attribute from a given arithmetic fastmath attribute.
LLVM::FastmathFlagsAttr
mlir::arith::convertArithFastMathAttrToLLVM(arith::FastMathFlagsAttr fmfAttr) {
arith::FastMathFlags arithFMF = fmfAttr.getValue();
return LLVM::FastmathFlagsAttr::get(
fmfAttr.getContext(), convertArithFastMathFlagsToLLVM(arithFMF));
}
+
+LLVM::IntegerOverflowFlags mlir::arith::convertArithOverflowFlagsToLLVM(
+ arith::IntegerOverflowFlags arithFlags) {
+ LLVM::IntegerOverflowFlags llvmFlags{};
+ const std::pair<arith::IntegerOverflowFlags, LLVM::IntegerOverflowFlags>
+ flags[] = {
+ {arith::IntegerOverflowFlags::nsw, LLVM::IntegerOverflowFlags::nsw},
+ {arith::IntegerOverflowFlags::nuw, LLVM::IntegerOverflowFlags::nuw}};
+ for (auto [arithFlag, llvmFlag] : flags) {
+ if (bitEnumContainsAny(arithFlags, arithFlag))
+ llvmFlags = llvmFlags | llvmFlag;
+ }
+ return llvmFlags;
+}
+
+LLVM::IntegerOverflowFlagsAttr mlir::arith::convertArithOverflowAttrToLLVM(
+ arith::IntegerOverflowFlagsAttr flagsAttr) {
+ arith::IntegerOverflowFlags arithFlags = flagsAttr.getValue();
+ return LLVM::IntegerOverflowFlagsAttr::get(
+ flagsAttr.getContext(), convertArithOverflowFlagsToLLVM(arithFlags));
+}
diff --git a/mlir/lib/Conversion/ArithToLLVM/ArithToLLVM.cpp b/mlir/lib/Conversion/ArithToLLVM/ArithToLLVM.cpp
index 5e4213cc4e874a..cf46e0d3ac46ac 100644
--- a/mlir/lib/Conversion/ArithToLLVM/ArithToLLVM.cpp
+++ b/mlir/lib/Conversion/ArithToLLVM/ArithToLLVM.cpp
@@ -35,7 +35,9 @@ namespace {
using AddFOpLowering =
VectorConvertToLLVMPattern<arith::AddFOp, LLVM::FAddOp,
arith::AttrConvertFastMathToLLVM>;
-using AddIOpLowering = VectorConvertToLLVMPattern<arith::AddIOp, LLVM::AddOp>;
+using AddIOpLowering =
+ VectorConvertToLLVMPattern<arith::AddIOp, LLVM::AddOp,
+ arith::AttrConvertOverflowToLLVM>;
using AndIOpLowering = VectorConvertToLLVMPattern<arith::AndIOp, LLVM::AndOp>;
using BitcastOpLowering =
VectorConvertToLLVMPattern<arith::BitcastOp, LLVM::BitcastOp>;
@@ -78,7 +80,9 @@ using MinUIOpLowering =
using MulFOpLowering =
VectorConvertToLLVMPattern<arith::MulFOp, LLVM::FMulOp,
arith::AttrConvertFastMathToLLVM>;
-using MulIOpLowering = VectorConvertToLLVMPattern<arith::MulIOp, LLVM::MulOp>;
+using MulIOpLowering =
+ VectorConvertToLLVMPattern<arith::MulIOp, LLVM::MulOp,
+ arith::AttrConvertOverflowToLLVM>;
using NegFOpLowering =
VectorConvertToLLVMPattern<arith::NegFOp, LLVM::FNegOp,
arith::AttrConvertFastMathToLLVM>;
@@ -102,7 +106,9 @@ using SIToFPOpLowering =
using SubFOpLowering =
VectorConvertToLLVMPattern<arith::SubFOp, LLVM::FSubOp,
arith::AttrConvertFastMathToLLVM>;
-using SubIOpLowering = VectorConvertToLLVMPattern<arith::SubIOp, LLVM::SubOp>;
+using SubIOpLowering =
+ VectorConvertToLLVMPattern<arith::SubIOp, LLVM::SubOp,
+ arith::AttrConvertOverflowToLLVM>;
using TruncFOpLowering =
VectorConvertToLLVMPattern<arith::TruncFOp, LLVM::FPTruncOp>;
using TruncIOpLowering =
diff --git a/mlir/lib/Conversion/ArithToSPIRV/ArithToSPIRV.cpp b/mlir/lib/Conversion/ArithToSPIRV/ArithToSPIRV.cpp
index aba6a21deccb0c..1abad1e9fa4d85 100644
--- a/mlir/lib/Conversion/ArithToSPIRV/ArithToSPIRV.cpp
+++ b/mlir/lib/Conversion/ArithToSPIRV/ArithToSPIRV.cpp
@@ -158,8 +158,61 @@ getTypeConversionFailure(ConversionPatternRewriter &rewriter, Operation *op) {
return getTypeConversionFailure(rewriter, op, op->getResultTypes().front());
}
+// TODO: Move to some common place?
+static std::string getDecorationString(spirv::Decoration decor) {
+ return llvm::convertToSnakeFromCamelCase(stringifyDecoration(decor));
+}
+
namespace {
+/// Converts elementwise unary, binary and ternary arith ope...
[truncated]
``````````
</details>
https://github.com/llvm/llvm-project/pull/78376
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