[Mlir-commits] [mlir] 9ba0a77 - [mlir][spirv] Add support for dense_resource in arith to spirv (#91318)
llvmlistbot at llvm.org
llvmlistbot at llvm.org
Fri May 17 07:29:52 PDT 2024
Author: maxbartel
Date: 2024-05-17T10:29:48-04:00
New Revision: 9ba0a7725680fec5e071634f814a9d32ba33e852
URL: https://github.com/llvm/llvm-project/commit/9ba0a7725680fec5e071634f814a9d32ba33e852
DIFF: https://github.com/llvm/llvm-project/commit/9ba0a7725680fec5e071634f814a9d32ba33e852.diff
LOG: [mlir][spirv] Add support for dense_resource in arith to spirv (#91318)
This adds support for `dense_resource` in arith to spirv.
Note that this inlines the blob into the IR. Another possibility would
be to add proper dense_resource support to spirv, but there is a lot of
special handling going on to convert a `DenseElementsAttr` to the
correct SPIRV type. Some of that even iterates over all the values in
the Attribute. For proper support of a `DenseResourceElementsAttr` this
probably needs a redesign. I would like to hear some opinions on that!
The test is disabled on non little Endian machines. See
https://github.com/llvm/llvm-project/issues/63469 for more information.
Added:
mlir/test/Conversion/ArithToSPIRV/arith-to-spirv-le-specific.mlir
Modified:
mlir/lib/Conversion/ArithToSPIRV/ArithToSPIRV.cpp
mlir/test/Conversion/ArithToSPIRV/arith-to-spirv-unsupported.mlir
Removed:
################################################################################
diff --git a/mlir/lib/Conversion/ArithToSPIRV/ArithToSPIRV.cpp b/mlir/lib/Conversion/ArithToSPIRV/ArithToSPIRV.cpp
index 806981728561c..4c3237b24b786 100644
--- a/mlir/lib/Conversion/ArithToSPIRV/ArithToSPIRV.cpp
+++ b/mlir/lib/Conversion/ArithToSPIRV/ArithToSPIRV.cpp
@@ -17,6 +17,7 @@
#include "mlir/Dialect/SPIRV/Transforms/SPIRVConversion.h"
#include "mlir/IR/BuiltinAttributes.h"
#include "mlir/IR/BuiltinTypes.h"
+#include "mlir/IR/DialectResourceBlobManager.h"
#include "llvm/ADT/APInt.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/STLExtras.h"
@@ -229,16 +230,41 @@ struct ConstantCompositeOpPattern final
if (!srcType || srcType.getNumElements() == 1)
return failure();
- // arith.constant should only have vector or tenor types.
- assert((isa<VectorType, RankedTensorType>(srcType)));
+ // arith.constant should only have vector or tensor types. This is a MLIR
+ // wide problem at the moment.
+ if (!isa<VectorType, RankedTensorType>(srcType))
+ return rewriter.notifyMatchFailure(constOp, "unsupported ShapedType");
Type dstType = getTypeConverter()->convertType(srcType);
if (!dstType)
return failure();
- auto dstElementsAttr = dyn_cast<DenseElementsAttr>(constOp.getValue());
- if (!dstElementsAttr)
- return failure();
+ // Import the resource into the IR to make use of the special handling of
+ // element types later on.
+ mlir::DenseElementsAttr dstElementsAttr;
+ if (auto denseElementsAttr =
+ dyn_cast<DenseElementsAttr>(constOp.getValue())) {
+ dstElementsAttr = denseElementsAttr;
+ } else if (auto resourceAttr =
+ dyn_cast<DenseResourceElementsAttr>(constOp.getValue())) {
+
+ AsmResourceBlob *blob = resourceAttr.getRawHandle().getBlob();
+ if (!blob)
+ return constOp->emitError("could not find resource blob");
+
+ ArrayRef<char> ptr = blob->getData();
+
+ // Check that the buffer meets the requirements to get converted to a
+ // DenseElementsAttr
+ bool detectedSplat = false;
+ if (!DenseElementsAttr::isValidRawBuffer(srcType, ptr, detectedSplat))
+ return constOp->emitError("resource is not a valid buffer");
+
+ dstElementsAttr =
+ DenseElementsAttr::getFromRawBuffer(resourceAttr.getType(), ptr);
+ } else {
+ return constOp->emitError("unsupported elements attribute");
+ }
ShapedType dstAttrType = dstElementsAttr.getType();
diff --git a/mlir/test/Conversion/ArithToSPIRV/arith-to-spirv-le-specific.mlir b/mlir/test/Conversion/ArithToSPIRV/arith-to-spirv-le-specific.mlir
new file mode 100644
index 0000000000000..7233a8bfffa9d
--- /dev/null
+++ b/mlir/test/Conversion/ArithToSPIRV/arith-to-spirv-le-specific.mlir
@@ -0,0 +1,38 @@
+// RUN: mlir-opt -split-input-file -convert-arith-to-spirv -verify-diagnostics %s | FileCheck %s
+
+
+//===----------------------------------------------------------------------===//
+// arith.constant dense_resource
+//
+// The decoding of dense_resource
diff ers between little and big endian
+// machines. At the moment only litte endian is supported.
+// See https://github.com/llvm/llvm-project/issues/63469 for more infos.
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: target=s390x-{{.*}}
+
+module attributes {
+ spirv.target_env = #spirv.target_env<
+ #spirv.vce<v1.0, [Int8, Int16, Int64, Float16, Float64], []>, #spirv.resource_limits<>>
+} {
+func.func @constant_dense_resource() {
+ // CHECK: %{{.*}} = spirv.Constant dense<[0.203224242, -0.254296064, -0.365104556, -0.469196141, 0.466041982]> : tensor<5xf32> : !spirv.array<5 x f32>
+ %0 = arith.constant dense_resource<dense_resource_test_5xf32> : tensor<5xf32>
+ // CHECK: %{{.*}} = spirv.Constant dense<[1, 2]> : vector<2xi32>
+ %1 = arith.constant dense_resource<dense_resource_test_2xi32> : vector<2xi32>
+ // CHECK: %{{.*}} = spirv.Constant dense<[0.35476172, 0.351080596, -0.0795008316, 0.366843373]> : tensor<4xf32> : !spirv.array<4 x f32>
+ %2 = arith.constant dense_resource<dense_resource_test_2x2xf32> : tensor<1x2x2xf32>
+ return
+ }
+}
+// Resources are kept at end of file. New tests should be added above this.
+{-#
+ dialect_resources: {
+ builtin: {
+ dense_resource_test_2xi32: "0x400000000100000002000000",
+ dense_resource_test_5xf32: "0x08000000041A503E183382BEFCEEBABE7A3AF0BE0E9DEE3E",
+ dense_resource_test_2x2xf32: "0x0800000054A3B53ED6C0B33E55D1A2BDE5D2BB3E"
+ }
+ }
+#-}
diff --git a/mlir/test/Conversion/ArithToSPIRV/arith-to-spirv-unsupported.mlir b/mlir/test/Conversion/ArithToSPIRV/arith-to-spirv-unsupported.mlir
index 0d92a8e676d85..2512254b443db 100644
--- a/mlir/test/Conversion/ArithToSPIRV/arith-to-spirv-unsupported.mlir
+++ b/mlir/test/Conversion/ArithToSPIRV/arith-to-spirv-unsupported.mlir
@@ -95,6 +95,34 @@ func.func @unsupported_constant_tensor_2xf64_0() {
return
}
+// -----
+
+func.func @constant_dense_resource_non_existant() {
+ // expected-error @+2 {{failed to legalize operation 'arith.constant'}}
+ // expected-error @+1 {{could not find resource blob}}
+ %0 = arith.constant dense_resource<non_existant> : tensor<5xf32>
+ return
+}
+
+// -----
+
+module {
+func.func @constant_dense_resource_invalid_buffer() {
+ // expected-error @+2 {{failed to legalize operation 'arith.constant'}}
+ // expected-error @+1 {{resource is not a valid buffer}}
+ %0 = arith.constant dense_resource<dense_resource_test_2xi32> : vector<2xi32>
+ return
+ }
+}
+// This is a buffer of wrong type and shape
+{-#
+ dialect_resources: {
+ builtin: {
+ dense_resource_test_2xi32: "0x0800000054A3B53ED6C0B33E55D1A2BDE5D2BB3E"
+ }
+ }
+#-}
+
///===----------------------------------------------------------------------===//
// Type emulation
//===----------------------------------------------------------------------===//
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