affbc0cd1c
Summary: The native alignment may generally not be used when lowering a vector.transfer to the underlying load/store operation. This revision fixes the unmasked load/store alignment to match that of the masked path. Differential Revision: https://reviews.llvm.org/D83684
65 lines
2.2 KiB
MLIR
65 lines
2.2 KiB
MLIR
// RUN: mlir-opt %s -convert-scf-to-std -convert-vector-to-llvm -convert-std-to-llvm | \
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// RUN: mlir-cpu-runner -e entry -entry-point-result=void \
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// RUN: -shared-libs=%mlir_integration_test_dir/libmlir_c_runner_utils%shlibext | \
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// RUN: FileCheck %s
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func @transfer_read_1d(%A : memref<?xf32>, %base: index) {
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%fm42 = constant -42.0: f32
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%f = vector.transfer_read %A[%base], %fm42
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{permutation_map = affine_map<(d0) -> (d0)>} :
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memref<?xf32>, vector<13xf32>
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vector.print %f: vector<13xf32>
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return
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}
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func @transfer_read_unmasked_4(%A : memref<?xf32>, %base: index) {
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%fm42 = constant -42.0: f32
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%f = vector.transfer_read %A[%base], %fm42
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{permutation_map = affine_map<(d0) -> (d0)>, masked = [false]} :
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memref<?xf32>, vector<4xf32>
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vector.print %f: vector<4xf32>
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return
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}
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func @transfer_write_1d(%A : memref<?xf32>, %base: index) {
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%f0 = constant 0.0 : f32
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%vf0 = splat %f0 : vector<4xf32>
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vector.transfer_write %vf0, %A[%base]
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{permutation_map = affine_map<(d0) -> (d0)>} :
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vector<4xf32>, memref<?xf32>
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return
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}
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func @entry() {
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%c0 = constant 0: index
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%c1 = constant 1: index
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%c2 = constant 2: index
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%c3 = constant 3: index
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%c4 = constant 4: index
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%c5 = constant 5: index
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%A = alloc(%c5) : memref<?xf32>
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scf.for %i = %c0 to %c5 step %c1 {
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%i32 = index_cast %i : index to i32
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%fi = sitofp %i32 : i32 to f32
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store %fi, %A[%i] : memref<?xf32>
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}
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// On input, memory contains [[ 0, 1, 2, 3, 4, xxx garbage xxx ]]
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// Read shifted by 2 and pad with -42:
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// ( 2, 3, 4, -42, ..., -42)
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call @transfer_read_1d(%A, %c2) : (memref<?xf32>, index) -> ()
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// Write into memory shifted by 3
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// memory contains [[ 0, 1, 2, 0, 0, xxx garbage xxx ]]
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call @transfer_write_1d(%A, %c3) : (memref<?xf32>, index) -> ()
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// Read shifted by 0 and pad with -42:
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// ( 0, 1, 2, 0, 0, -42, ..., -42)
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call @transfer_read_1d(%A, %c0) : (memref<?xf32>, index) -> ()
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// Read unmasked 4 @ 1, guaranteed to not overflow.
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// Exercises proper alignment.
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call @transfer_read_unmasked_4(%A, %c1) : (memref<?xf32>, index) -> ()
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return
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}
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// CHECK: ( 2, 3, 4, -42, -42, -42, -42, -42, -42, -42, -42, -42, -42 )
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// CHECK: ( 0, 1, 2, 0, 0, -42, -42, -42, -42, -42, -42, -42, -42 )
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// CHECK: ( 1, 2, 0, 0 )
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