[Mlir-commits] [mlir] [mlir][SVE] Add an e2e test for vectorization of linalg.matmul (PR #69592)

Andrzej WarzyƄski llvmlistbot at llvm.org
Thu Oct 26 04:51:22 PDT 2023


https://github.com/banach-space updated https://github.com/llvm/llvm-project/pull/69592

>From 08202516d24d401a4674b851e1d73c4564eaa38b Mon Sep 17 00:00:00 2001
From: Andrzej Warzynski <andrzej.warzynski at arm.com>
Date: Thu, 19 Oct 2023 10:17:54 +0000
Subject: [PATCH 1/4] [mlir][SVE] Add an e2e test for vectorization of
 linalg.matmul

Adds an end-2-end test for scalable vectorization of linalg.matmul. This
is the most basic case where the dimension along which we vectorize fits
perfectly within SVE registers. I will be extending this to more generic
cases in the forthcoming patches.

Depends on #68794.
---
 .../Dialect/Linalg/CPU/ArmSVE/matmul.mlir     | 77 +++++++++++++++++++
 1 file changed, 77 insertions(+)
 create mode 100644 mlir/test/Integration/Dialect/Linalg/CPU/ArmSVE/matmul.mlir

diff --git a/mlir/test/Integration/Dialect/Linalg/CPU/ArmSVE/matmul.mlir b/mlir/test/Integration/Dialect/Linalg/CPU/ArmSVE/matmul.mlir
new file mode 100644
index 000000000000000..9b2aaefc5d63136
--- /dev/null
+++ b/mlir/test/Integration/Dialect/Linalg/CPU/ArmSVE/matmul.mlir
@@ -0,0 +1,77 @@
+// RUN: mlir-opt %s -test-transform-dialect-interpreter -test-transform-dialect-erase-schedule \
+// RUN:   -one-shot-bufferize -func-bufferize -cse -canonicalize -convert-vector-to-scf -arm-sve-legalize-vector-storage \
+// RUN:   -convert-vector-to-llvm="enable-arm-sve" -test-lower-to-llvm | \
+// RUN: %mcr_aarch64_cmd -e=entry -entry-point-result=void --march=aarch64 --mattr="+sve" -shared-libs=%mlir_runner_utils,%mlir_c_runner_utils | \
+// RUN: FileCheck %s
+
+func.func @printTestEnd() {
+  %0 = llvm.mlir.addressof @str_sve_end : !llvm.ptr<array<24 x i8>>
+  %1 = llvm.mlir.constant(0 : index) : i64
+  %2 = llvm.getelementptr %0[%1, %1]
+    : (!llvm.ptr<array<24 x i8>>, i64, i64) -> !llvm.ptr<i8>
+  llvm.call @printCString(%2) : (!llvm.ptr<i8>) -> ()
+  return
+}
+
+func.func @entry() {
+  %c1 = arith.constant 1 : index
+  %c2 = arith.constant 2 : index
+  %c4 = arith.constant 4 : index
+  %c0 = arith.constant 0 : index
+  %step = arith.constant 1 : index
+  %c0_f32 = arith.constant 0.0 : f32
+
+  %vscale = vector.vscale
+  %vl_fp = arith.muli %c4, %vscale : index
+  %A_alloc = bufferization.alloc_tensor(%c2, %c1) : tensor<?x?xf32>
+  %B_alloc = bufferization.alloc_tensor(%c1, %vl_fp) : tensor<?x?xf32>
+  %C_alloc = bufferization.alloc_tensor(%c2, %vl_fp) : tensor<?x?xf32>
+
+  %pi = arith.constant  3.14 : f32
+  %A = linalg.fill ins(%pi : f32) outs(%A_alloc : tensor<?x?xf32>) -> tensor<?x?xf32>
+  %B = linalg.fill ins(%pi : f32) outs(%B_alloc : tensor<?x?xf32>) -> tensor<?x?xf32>
+  %C_in = linalg.fill ins(%c0_f32 : f32) outs(%C_alloc : tensor<?x?xf32>) -> tensor<?x?xf32>
+
+  %C_out = linalg.matmul ins(%A, %B: tensor<?x?xf32>, tensor<?x?xf32>) outs(%C_in: tensor<?x?xf32>) -> tensor<?x?xf32>
+
+  // There are at least 4 f32 elements in every SVE vector, i.e. 
+  //    * %vscale is >= 1. 
+  // For implementations with wider vectors, you should see more elements being
+  // printed.
+  // CHECK: {{\[}}[9.8596,   9.8596,   9.8596,   9.8596
+  // CHECK-NEXT: [9.8596,   9.8596,   9.8596,   9.8596
+
+  %xf = tensor.cast %C_out : tensor<?x?xf32> to tensor<*xf32>
+  call @printMemrefF32(%xf) : (tensor<*xf32>) -> ()
+
+  // CHECK: SVE: END OF TEST OUTPUT
+  func.call @printTestEnd() : () -> ()
+
+  return
+}
+
+transform.sequence failures(propagate) {
+^bb1(%module_op: !transform.any_op):
+  %0 = transform.structured.match ops{["linalg.matmul"]} in %module_op : (!transform.any_op) -> !transform.any_op
+  %func_op = get_parent_op %0 : (!transform.any_op) -> !transform.op<"func.func">
+  // The tile sizes match the output matrix sizes
+  %1, %loops:3 = transform.structured.tile_using_for %0 [2, [4], 1] : (!transform.any_op) -> (!transform.any_op, !transform.any_op, !transform.any_op, !transform.any_op)
+  %2 = transform.structured.match ops{["linalg.matmul"]} in %module_op : (!transform.any_op) -> !transform.any_op
+  // The vector sizes match the output matrix sizes
+  // TOOD: Use variables to re-use "shared" sizes
+  transform.structured.vectorize %2 vector_sizes [2, [4], 1] : !transform.any_op
+
+  transform.apply_patterns to %func_op {
+    transform.apply_patterns.vector.reduction_to_contract
+    transform.apply_patterns.vector.transfer_permutation_patterns
+    transform.apply_patterns.vector.lower_masked_transfers
+  } : !transform.op<"func.func">
+  transform.apply_patterns to %func_op {
+    transform.apply_patterns.vector.lower_contraction lowering_strategy = "outerproduct"
+    transform.apply_patterns.vector.lower_outerproduct
+  } : !transform.op<"func.func">
+}
+
+llvm.func @printCString(!llvm.ptr<i8>)
+func.func private @printMemrefF32(%ptr : tensor<*xf32>)
+llvm.mlir.global internal constant @str_sve_end("SVE: END OF TEST OUTPUT\0A")

>From f39c97d64bd9e721f46cf6f367739a061ad3324b Mon Sep 17 00:00:00 2001
From: Andrzej Warzynski <andrzej.warzynski at arm.com>
Date: Thu, 19 Oct 2023 12:38:24 +0000
Subject: [PATCH 2/4] fixup! [mlir][SVE] Add an e2e test for vectorization of
 linalg.matmul

Use vector.print instead of @printCString
---
 .../Dialect/Linalg/CPU/ArmSVE/matmul.mlir           | 13 +------------
 1 file changed, 1 insertion(+), 12 deletions(-)

diff --git a/mlir/test/Integration/Dialect/Linalg/CPU/ArmSVE/matmul.mlir b/mlir/test/Integration/Dialect/Linalg/CPU/ArmSVE/matmul.mlir
index 9b2aaefc5d63136..df6144bfdc019db 100644
--- a/mlir/test/Integration/Dialect/Linalg/CPU/ArmSVE/matmul.mlir
+++ b/mlir/test/Integration/Dialect/Linalg/CPU/ArmSVE/matmul.mlir
@@ -4,15 +4,6 @@
 // RUN: %mcr_aarch64_cmd -e=entry -entry-point-result=void --march=aarch64 --mattr="+sve" -shared-libs=%mlir_runner_utils,%mlir_c_runner_utils | \
 // RUN: FileCheck %s
 
-func.func @printTestEnd() {
-  %0 = llvm.mlir.addressof @str_sve_end : !llvm.ptr<array<24 x i8>>
-  %1 = llvm.mlir.constant(0 : index) : i64
-  %2 = llvm.getelementptr %0[%1, %1]
-    : (!llvm.ptr<array<24 x i8>>, i64, i64) -> !llvm.ptr<i8>
-  llvm.call @printCString(%2) : (!llvm.ptr<i8>) -> ()
-  return
-}
-
 func.func @entry() {
   %c1 = arith.constant 1 : index
   %c2 = arith.constant 2 : index
@@ -45,7 +36,7 @@ func.func @entry() {
   call @printMemrefF32(%xf) : (tensor<*xf32>) -> ()
 
   // CHECK: SVE: END OF TEST OUTPUT
-  func.call @printTestEnd() : () -> ()
+  vector.print str "SVE: END OF TEST OUTPUT"
 
   return
 }
@@ -72,6 +63,4 @@ transform.sequence failures(propagate) {
   } : !transform.op<"func.func">
 }
 
-llvm.func @printCString(!llvm.ptr<i8>)
 func.func private @printMemrefF32(%ptr : tensor<*xf32>)
-llvm.mlir.global internal constant @str_sve_end("SVE: END OF TEST OUTPUT\0A")

>From bd61b2ce570f8c87d9dfd489269e996061302879 Mon Sep 17 00:00:00 2001
From: Andrzej Warzynski <andrzej.warzynski at arm.com>
Date: Mon, 23 Oct 2023 07:26:40 +0000
Subject: [PATCH 3/4] fixup! [mlir][SVE] Add an e2e test for vectorization of
 linalg.matmul

Simplity check-lines
---
 .../Dialect/Linalg/CPU/ArmSVE/matmul.mlir        | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/mlir/test/Integration/Dialect/Linalg/CPU/ArmSVE/matmul.mlir b/mlir/test/Integration/Dialect/Linalg/CPU/ArmSVE/matmul.mlir
index df6144bfdc019db..922c5d89e3217cf 100644
--- a/mlir/test/Integration/Dialect/Linalg/CPU/ArmSVE/matmul.mlir
+++ b/mlir/test/Integration/Dialect/Linalg/CPU/ArmSVE/matmul.mlir
@@ -25,17 +25,21 @@ func.func @entry() {
 
   %C_out = linalg.matmul ins(%A, %B: tensor<?x?xf32>, tensor<?x?xf32>) outs(%C_in: tensor<?x?xf32>) -> tensor<?x?xf32>
 
-  // There are at least 4 f32 elements in every SVE vector, i.e. 
-  //    * %vscale is >= 1. 
-  // For implementations with wider vectors, you should see more elements being
-  // printed.
-  // CHECK: {{\[}}[9.8596,   9.8596,   9.8596,   9.8596
+  // CHECK-LABEL: SVE: START OF TEST OUTPUT
+  vector.print str "SVE: START OF TEST OUTPUT"
+
+  // There are at least 4 x f32 elements in every SVE vector, i.e. 
+  //    * %vscale >= 1. 
+  // Hence, when checking the outupt there will always be at least 4 elements
+  // in every row. For implementations with wider vectors, you should see more
+  // elements being printed.
+  // CHECK: [9.8596,   9.8596,   9.8596,   9.8596
   // CHECK-NEXT: [9.8596,   9.8596,   9.8596,   9.8596
 
   %xf = tensor.cast %C_out : tensor<?x?xf32> to tensor<*xf32>
   call @printMemrefF32(%xf) : (tensor<*xf32>) -> ()
 
-  // CHECK: SVE: END OF TEST OUTPUT
+  // CHECK-NEXT: SVE: END OF TEST OUTPUT
   vector.print str "SVE: END OF TEST OUTPUT"
 
   return

>From 2b08169fe9fffe410df5c745b0133d07b24775c1 Mon Sep 17 00:00:00 2001
From: Andrzej Warzynski <andrzej.warzynski at arm.com>
Date: Thu, 26 Oct 2023 11:50:50 +0000
Subject: [PATCH 4/4] fixup! [mlir][SVE] Add an e2e test for vectorization of
 linalg.matmul

Use CHECK-NEXT
---
 mlir/test/Integration/Dialect/Linalg/CPU/ArmSVE/matmul.mlir | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/mlir/test/Integration/Dialect/Linalg/CPU/ArmSVE/matmul.mlir b/mlir/test/Integration/Dialect/Linalg/CPU/ArmSVE/matmul.mlir
index 922c5d89e3217cf..bc94161d5d37545 100644
--- a/mlir/test/Integration/Dialect/Linalg/CPU/ArmSVE/matmul.mlir
+++ b/mlir/test/Integration/Dialect/Linalg/CPU/ArmSVE/matmul.mlir
@@ -33,7 +33,8 @@ func.func @entry() {
   // Hence, when checking the outupt there will always be at least 4 elements
   // in every row. For implementations with wider vectors, you should see more
   // elements being printed.
-  // CHECK: [9.8596,   9.8596,   9.8596,   9.8596
+  // CHECK-NEXT: Unranked Memref {{.*}} rank = 2 offset = 0 sizes = [2, 16] strides = [16, 1] data =
+  // CHECK-NEXT: [9.8596,   9.8596,   9.8596,   9.8596
   // CHECK-NEXT: [9.8596,   9.8596,   9.8596,   9.8596
 
   %xf = tensor.cast %C_out : tensor<?x?xf32> to tensor<*xf32>



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