Fix reshape op. (#53)

src/pass/lower_frontend_to_krnl.cpp

@@ -1118,8 +1118,13 @@ struct ONNXReshapeOpLowering : public ConversionPattern {
         // the result.
         Value index = rewriter.create<ConstantOp>(
             loc, rewriter.getIntegerAttr(rewriter.getIndexType(), i));
+        // Load index from array of indices.
         Value loadedVal = rewriter.create<LoadOp>(loc, operands[1], index);
-        Value int64LoadedVal = rewriter.create<ZeroExtendIOp>(
+        // Check if the loaded index is already the correct width of 64 bits.
+        // Convert the value to a 64 bit integer if needed.
+        Value int64LoadedVal = loadedVal;
+        if (loadedVal.getType().cast<IntegerType>().getWidth() < 64)
+          int64LoadedVal = rewriter.create<ZeroExtendIOp>(
               loc, loadedVal, rewriter.getIntegerType(64));
         tensorSize = rewriter.create<MulIOp>(loc, tensorSize, int64LoadedVal);
         allocOperands.push_back(rewriter.create<IndexCastOp>(

src/transform/lower_to_llvm.cpp

@@ -83,11 +83,17 @@ public:
     Value int64Size = rewriter.create<LLVM::SExtOp>(
         loc, LLVM::LLVMType::getInt64Ty(llvmDialect), operands[2]);
 
+    // Is volatile (set to false).
+    Value isVolatile = rewriter.create<LLVM::ConstantOp>(
+        loc, LLVM::LLVMType::getInt1Ty(llvmDialect),
+        rewriter.getIntegerAttr(rewriter.getIntegerType(1), 0));
+
     // Memcpy call
     rewriter.create<CallOp>(
         loc, memcpyRef, LLVM::LLVMType::getVoidTy(llvmDialect),
         ArrayRef<Value>(
-            {alignedInt8PtrDstMemory, alignedInt8PtrSrcMemory, int64Size}));
+            {alignedInt8PtrDstMemory, alignedInt8PtrSrcMemory, int64Size,
+             isVolatile}));
 
     rewriter.eraseOp(op);
     return matchSuccess();
@@ -107,9 +113,10 @@ private:
     auto llvmVoidTy = LLVM::LLVMType::getVoidTy(llvmDialect);
     auto llvmI8PtrTy = LLVM::LLVMType::getInt8PtrTy(llvmDialect);
     auto llvmI64Ty = LLVM::LLVMType::getInt64Ty(llvmDialect);
+    auto llvmI1Ty = LLVM::LLVMType::getInt1Ty(llvmDialect);
     auto llvmFnType = LLVM::LLVMType::getFunctionTy(
         llvmVoidTy,
-        ArrayRef<mlir::LLVM::LLVMType>({llvmI8PtrTy, llvmI8PtrTy, llvmI64Ty}),
+        ArrayRef<mlir::LLVM::LLVMType>({llvmI8PtrTy, llvmI8PtrTy, llvmI64Ty, llvmI1Ty}),
         false);
 
     // Insert the memcpy function into the body of the parent module.

test/backend/test.py

@@ -154,6 +154,9 @@ test_to_enable = [
     # SoftsignOp:
     "test_softsign_cpu",
     "test_softsign_example_cpu",
+
+    # ReshapeOp:
+    "test_reshape_reordered_all_dims_cpu",
 ]
 
 # Extract name of all test cases.

test/mlir/krnl/reshape.mlir

@@ -4,13 +4,14 @@ func @test_reshape(%arg0 : tensor<?x10xf32>, %arg1 : tensor<4xi32>) -> tensor<*x
   %0 = "onnx.Reshape"(%arg0, %arg1) : (tensor<?x10xf32>, tensor<4xi32>) -> tensor<*xf32>
   "std.return"(%0) : (tensor<*xf32>) -> ()
 
-  // CHECK: llvm.func @llvm.memcpy.p0i8.p0i8.i64(!llvm<"i8*">, !llvm<"i8*">, !llvm.i64)
+  // CHECK: llvm.func @llvm.memcpy.p0i8.p0i8.i64(!llvm<"i8*">, !llvm<"i8*">, !llvm.i64, !llvm.i1)
   // CHECK: [[RES:%.+]] = llvm.insertvalue {{.*}}[4, 3] : !llvm<"{ float*, float*, i64, [4 x i64], [4 x i64] }">
   // CHECK: [[EXT_VAL_0:%.+]] = llvm.extractvalue [[RES]][1] : !llvm<"{ float*, float*, i64, [4 x i64], [4 x i64] }">
   // CHECK: [[DST:%.+]] = llvm.bitcast [[EXT_VAL_0]] : !llvm<"float*"> to !llvm<"i8*">
   // CHECK: [[EXT_VAL_1:%.+]] = llvm.extractvalue %0[1] : !llvm<"{ float*, float*, i64, [2 x i64], [2 x i64] }">
   // CHECK: [[SRC:%.+]] = llvm.bitcast [[EXT_VAL_1]] : !llvm<"float*"> to !llvm<"i8*">
   // CHECK: [[SIZE:%.+]] = llvm.sext %{{.*}} : !llvm.i64 to !llvm.i64
-  // CHECK: llvm.call @llvm.memcpy.p0i8.p0i8.i64([[DST]], [[SRC]], [[SIZE]]) : (!llvm<"i8*">, !llvm<"i8*">, !llvm.i64) -> !llvm.void
+  // CHECK: [[VOLATILE:%.+]] = llvm.mlir.constant(0 : i1) : !llvm.i1
+  // CHECK: llvm.call @llvm.memcpy.p0i8.p0i8.i64([[DST]], [[SRC]], [[SIZE]], [[VOLATILE]]) : (!llvm<"i8*">, !llvm<"i8*">, !llvm.i64, !llvm.i1) -> !llvm.void
   // CHECK: llvm.return [[RES]] : !llvm<"{ float*, float*, i64, [4 x i64], [4 x i64] }">
 }