From f1b12f5a64eeb5ea9de8060e46b77c18806c49bf Mon Sep 17 00:00:00 2001 From: Nicolas Vasilache Date: Wed, 3 Apr 2019 00:46:40 -0700 Subject: [PATCH] Fix test that fails on non-determinism in LowerVectorTransfers This CL fixes the non-determinism across compilers in an edsc::select expression used in LowerVectorTransfers. This is achieved by factoring the expression out of the function call to ensure a deterministic order of evaluation. Since the expression is now factored out, fewer IR is generated and the test is updated accordingly. -- PiperOrigin-RevId: 241679962 --- mlir/lib/Transforms/LowerVectorTransfers.cpp | 10 +++-- .../Vectorize/lower_vector_transfers.mlir | 44 +++++++++------------- 2 files changed, 24 insertions(+), 30 deletions(-) diff --git a/mlir/lib/Transforms/LowerVectorTransfers.cpp b/mlir/lib/Transforms/LowerVectorTransfers.cpp index 54e8b8f..a618534 100644 --- a/mlir/lib/Transforms/LowerVectorTransfers.cpp +++ b/mlir/lib/Transforms/LowerVectorTransfers.cpp @@ -197,12 +197,16 @@ clip(VectorTransferOpTy transfer, edsc::MemRefView &view, auto N = view.ub(memRefDim); auto i = memRefAccess[memRefDim]; if (loopIndex < 0) { - clippedScalarAccessExprs[memRefDim] = - select(i < zero, zero, select(i < N, i, N - one)); + auto N_minus_1 = N - one; + auto select_1 = select(i < N, i, N_minus_1); + clippedScalarAccessExprs[memRefDim] = select(i < zero, zero, select_1); } else { auto ii = ivs[loopIndex]; + auto i_plus_ii = i + ii; + auto N_minus_1 = N - one; + auto select_1 = select(i_plus_ii < N, i_plus_ii, N_minus_1); clippedScalarAccessExprs[memRefDim] = - select(i + ii < zero, zero, select(i + ii < N, i + ii, N - one)); + select(i_plus_ii < zero, zero, select_1); } } diff --git a/mlir/test/Transforms/Vectorize/lower_vector_transfers.mlir b/mlir/test/Transforms/Vectorize/lower_vector_transfers.mlir index 4805a86..b5345f3 100644 --- a/mlir/test/Transforms/Vectorize/lower_vector_transfers.mlir +++ b/mlir/test/Transforms/Vectorize/lower_vector_transfers.mlir @@ -70,33 +70,29 @@ func @materialize_read(%M: index, %N: index, %O: index, %P: index) { // CHECK-NEXT: %[[C0:.*]] = constant 0 : index // CHECK-NEXT: %[[C1:.*]] = constant 1 : index // CHECK-NEXT: {{.*}} = affine.apply #[[ADD]](%[[I0]], %[[I4]]) - // CHECK-NEXT: {{.*}} = cmpi "slt", {{.*}}, %[[C0]] : index - // CHECK-NEXT: {{.*}} = affine.apply #[[ADD]](%[[I0]], %[[I4]]) - // CHECK-NEXT: {{.*}} = cmpi "slt", {{.*}} : index - // CHECK-NEXT: {{.*}} = affine.apply #[[ADD]](%[[I0]], %[[I4]]) // CHECK-NEXT: {{.*}} = affine.apply #[[SUB]]()[%[[D0]]] + // CHECK-NEXT: {{.*}} = cmpi "slt", {{.*}} : index // CHECK-NEXT: {{.*}} = select + // CHECK-NEXT: {{.*}} = cmpi "slt", {{.*}}, %[[C0]] : index // CHECK-NEXT: %[[L0:.*]] = select // - // CHECK-NEXT: {{.*}} = cmpi "slt", {{.*}} : index - // CHECK-NEXT: {{.*}} = cmpi "slt", {{.*}} : index // CHECK-NEXT: {{.*}} = affine.apply #[[SUB]]()[%[[D1]]] - // CHECK-NEXT: {{.*}} = select + // CHECK-NEXT: {{.*}} = cmpi "slt", {{.*}} : index + // CHECK-NEXT: {{.*}} = select + // CHECK-NEXT: {{.*}} = cmpi "slt", {{.*}}, %[[C0]] : index // CHECK-NEXT: %[[L1:.*]] = select // - // CHECK-NEXT: {{.*}} = cmpi "slt", {{.*}} : index - // CHECK-NEXT: {{.*}} = cmpi "slt", {{.*}} : index // CHECK-NEXT: {{.*}} = affine.apply #[[SUB]]()[%[[D2]]] + // CHECK-NEXT: {{.*}} = cmpi "slt", {{.*}} : index // CHECK-NEXT: {{.*}} = select + // CHECK-NEXT: {{.*}} = cmpi "slt", {{.*}}, %[[C0]] : index // CHECK-NEXT: %[[L2:.*]] = select // // CHECK-NEXT: {{.*}} = affine.apply #[[ADD]](%[[I3]], %[[I6]]) - // CHECK-NEXT: {{.*}} = cmpi "slt", {{.*}}, %[[C0]] : index - // CHECK-NEXT: {{.*}} = affine.apply #[[ADD]](%[[I3]], %[[I6]]) - // CHECK-NEXT: {{.*}} = cmpi "slt", {{.*}} : index - // CHECK-NEXT: {{.*}} = affine.apply #[[ADD]](%[[I3]], %[[I6]]) // CHECK-NEXT: {{.*}} = affine.apply #[[SUB]]()[%[[D3]]] + // CHECK-NEXT: {{.*}} = cmpi "slt", {{.*}} : index // CHECK-NEXT: {{.*}} = select + // CHECK-NEXT: {{.*}} = cmpi "slt", {{.*}}, %[[C0]] : index // CHECK-NEXT: %[[L3:.*]] = select // // CHECK-NEXT: {{.*}} = load %0[%[[L0]], %[[L1]], %[[L2]], %[[L3]]] : memref @@ -150,36 +146,30 @@ func @materialize_write(%M: index, %N: index, %O: index, %P: index) { // CHECK-NEXT: %[[C0:.*]] = constant 0 : index // CHECK-NEXT: %[[C1:.*]] = constant 1 : index // CHECK-NEXT: {{.*}} = affine.apply #[[ADD]](%[[I0]], %[[I4]]) - // CHECK-NEXT: {{.*}} = cmpi "slt", {{.*}}, %[[C0]] : index - // CHECK-NEXT: {{.*}} = affine.apply #[[ADD]](%[[I0]], %[[I4]]) - // CHECK-NEXT: {{.*}} = cmpi "slt", {{.*}}, {{.*}} : index - // CHECK-NEXT: {{.*}} = affine.apply #[[ADD]](%[[I0]], %[[I4]]) // CHECK-NEXT: {{.*}} = affine.apply #[[SUB]]()[%[[D0]]] + // CHECK-NEXT: {{.*}} = cmpi "slt", {{.*}}, {{.*}} : index // CHECK-NEXT: {{.*}} = select {{.*}}, {{.*}}, {{.*}} : index + // CHECK-NEXT: {{.*}} = cmpi "slt", {{.*}}, %[[C0]] : index // CHECK-NEXT: %[[S0:.*]] = select {{.*}}, %[[C0]], {{.*}} : index // // CHECK-NEXT: {{.*}} = affine.apply #[[ADD]](%[[I1]], %[[I5]]) - // CHECK-NEXT: {{.*}} = cmpi "slt", {{.*}}, %[[C0]] : index - // CHECK-NEXT: {{.*}} = affine.apply #[[ADD]](%[[I1]], %[[I5]]) - // CHECK-NEXT: {{.*}} = cmpi "slt", {{.*}}, {{.*}} : index - // CHECK-NEXT: {{.*}} = affine.apply #[[ADD]](%[[I1]], %[[I5]]) // CHECK-NEXT: {{.*}} = affine.apply #[[SUB]]()[%[[D1]]] + // CHECK-NEXT: {{.*}} = cmpi "slt", {{.*}}, {{.*}} : index // CHECK-NEXT: {{.*}} = select {{.*}}, {{.*}}, {{.*}} : index + // CHECK-NEXT: {{.*}} = cmpi "slt", {{.*}}, %[[C0]] : index // CHECK-NEXT: %[[S1:.*]] = select {{.*}}, %[[C0]], {{.*}} : index // - // CHECK-NEXT: {{.*}} = cmpi "slt", %[[I2]], %[[C0]] : index - // CHECK-NEXT: {{.*}} = cmpi "slt", %[[I2]], %3 : index // CHECK-NEXT: {{.*}} = affine.apply #[[SUB]]()[%[[D2]]] + // CHECK-NEXT: {{.*}} = cmpi "slt", %[[I2]], %3 : index // CHECK-NEXT: {{.*}} = select {{.*}}, %[[I2]], {{.*}} : index + // CHECK-NEXT: {{.*}} = cmpi "slt", %[[I2]], %[[C0]] : index // CHECK-NEXT: %[[S2:.*]] = select {{.*}}, %[[C0]], {{.*}} : index // // CHECK-NEXT: {{.*}} = affine.apply #[[ADD]](%[[I3]], %[[I6]]) - // CHECK-NEXT: {{.*}} = cmpi "slt", {{.*}}, %[[C0]] : index - // CHECK-NEXT: {{.*}} = affine.apply #[[ADD]](%[[I3]], %[[I6]]) - // CHECK-NEXT: {{.*}} = cmpi "slt", {{.*}}, {{.*}} : index - // CHECK-NEXT: {{.*}} = affine.apply #[[ADD]](%[[I3]], %[[I6]]) // CHECK-NEXT: {{.*}} = affine.apply #[[SUB]]()[%[[D3]]] + // CHECK-NEXT: {{.*}} = cmpi "slt", {{.*}}, {{.*}} : index // CHECK-NEXT: {{.*}} = select {{.*}}, {{.*}}, {{.*}} : index + // CHECK-NEXT: {{.*}} = cmpi "slt", {{.*}}, %[[C0]] : index // CHECK-NEXT: %[[S3:.*]] = select {{.*}}, %[[C0]], {{.*}} : index // // CHECK-NEXT: {{.*}} = load {{.*}}[%[[I6]], %[[I5]], %[[I4]]] : memref<5x4x3xf32> -- 2.7.4