[Mlir-commits] [mlir] 2b95597 - [mlir][SPIR-V] Add i64 tests for MemRef bitwidth emulation (NFC) (#200724)

[llvmlistbot at llvm.org]

Author: Arseniy Obolenskiy
Date: 2026-06-01T10:35:24+02:00
New Revision: 2b955975dcc524dca2881080a66ce192c5582645

URL: https://github.com/llvm/llvm-project/commit/2b955975dcc524dca2881080a66ce192c5582645
DIFF: https://github.com/llvm/llvm-project/commit/2b955975dcc524dca2881080a66ce192c5582645.diff

LOG: [mlir][SPIR-V] Add i64 tests for MemRef bitwidth emulation (NFC) (#200724)

Added: 
    

Modified: 
    mlir/test/Conversion/MemRefToSPIRV/bitwidth-emulation.mlir

Removed: 
    


################################################################################
diff  --git a/mlir/test/Conversion/MemRefToSPIRV/bitwidth-emulation.mlir b/mlir/test/Conversion/MemRefToSPIRV/bitwidth-emulation.mlir
index 323b54e8d460d..8679bf807240b 100644
--- a/mlir/test/Conversion/MemRefToSPIRV/bitwidth-emulation.mlir
+++ b/mlir/test/Conversion/MemRefToSPIRV/bitwidth-emulation.mlir
@@ -3,7 +3,6 @@
 
 // Check that access chain indices are properly adjusted if non-32-bit types are
 // emulated via 32-bit types.
-// TODO: Test i64 types.
 module attributes {
   spirv.target_env = #spirv.target_env<
     #spirv.vce<v1.0, [Shader, Int64], [SPV_KHR_storage_buffer_storage_class]>, #spirv.resource_limits<>>
@@ -75,6 +74,27 @@ func.func @load_i16(%arg0: memref<10xi16, #spirv.storage_class<StorageBuffer>>,
   return %0: i16
 }
 
+// i64 is a native type with Int64; the access chain index is used as-is without
+// the SDiv/UMod adjustment that emulated sub-32-bit types require.
+// CHECK-LABEL: @load_i64
+//       CHECK: (%[[ARG0:.+]]: {{.*}}, %[[ARG1:.+]]: index)
+// INDEX64-LABEL: @load_i64
+func.func @load_i64(%arg0: memref<10xi64, #spirv.storage_class<StorageBuffer>>, %index : index) -> i64 {
+  //     CHECK: %[[ARG1_CAST:.+]] = builtin.unrealized_conversion_cast %[[ARG1]] : index to i32
+  //     CHECK: %[[ZERO:.+]] = spirv.Constant 0 : i32
+  // CHECK-NOT: spirv.SDiv
+  //     CHECK: %[[PTR:.+]] = spirv.AccessChain %{{.+}}[%[[ZERO]], %[[ARG1_CAST]]] : {{.+}}, i32, i32
+  //     CHECK: spirv.Load "StorageBuffer" %[[PTR]] : i64
+  // CHECK-NOT: spirv.ShiftRightArithmetic
+
+  //   INDEX64: %[[ARG1_CAST:.+]] = builtin.unrealized_conversion_cast %{{.+}} : index to i64
+  //   INDEX64: %[[ZERO:.+]] = spirv.Constant 0 : i64
+  //   INDEX64: %[[PTR:.+]] = spirv.AccessChain %{{.+}}[%[[ZERO]], %[[ARG1_CAST]]] : {{.+}}, i64, i64
+  //   INDEX64: spirv.Load "StorageBuffer" %[[PTR]] : i64
+  %0 = memref.load %arg0[%index] : memref<10xi64, #spirv.storage_class<StorageBuffer>>
+  return %0: i64
+}
+
 // CHECK-LABEL: @load_f32
 func.func @load_f32(%arg0: memref<f32, #spirv.storage_class<StorageBuffer>>) {
   // CHECK-NOT: spirv.SDiv
@@ -151,6 +171,25 @@ func.func @store_i16(%arg0: memref<10xi16, #spirv.storage_class<StorageBuffer>>,
   return
 }
 
+// CHECK-LABEL: @store_i64
+//       CHECK: (%[[ARG0:.+]]: {{.*}}, %[[ARG1:.+]]: index, %[[ARG2:.+]]: i64)
+// INDEX64-LABEL: @store_i64
+func.func @store_i64(%arg0: memref<10xi64, #spirv.storage_class<StorageBuffer>>, %index: index, %value: i64) {
+  //     CHECK-DAG: %[[ARG1_CAST:.+]] = builtin.unrealized_conversion_cast %[[ARG1]] : index to i32
+  //     CHECK-DAG: %[[ARG0_CAST:.+]] = builtin.unrealized_conversion_cast %[[ARG0]]
+  //     CHECK: %[[ZERO:.+]] = spirv.Constant 0 : i32
+  // CHECK-NOT: spirv.AtomicAnd
+  //     CHECK: %[[PTR:.+]] = spirv.AccessChain %[[ARG0_CAST]][%[[ZERO]], %[[ARG1_CAST]]] : {{.+}}, i32, i32
+  //     CHECK: spirv.Store "StorageBuffer" %[[PTR]], %[[ARG2]] : i64
+  // CHECK-NOT: spirv.AtomicOr
+
+  //   INDEX64: %[[ZERO:.+]] = spirv.Constant 0 : i64
+  //   INDEX64: %[[PTR:.+]] = spirv.AccessChain %{{.+}}[%[[ZERO]], %{{.+}}] : {{.+}}, i64, i64
+  //   INDEX64: spirv.Store "StorageBuffer" %[[PTR]], %{{.+}} : i64
+  memref.store %value, %arg0[%index] : memref<10xi64, #spirv.storage_class<StorageBuffer>>
+  return
+}
+
 // CHECK-LABEL: @store_f32
 func.func @store_f32(%arg0: memref<f32, #spirv.storage_class<StorageBuffer>>, %value: f32) {
   //     CHECK: spirv.Store