derek.holloway
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83 lines
3.1 KiB
MLIR
83 lines
3.1 KiB
MLIR
// RUN: mlir-opt -test-greedy-patterns='top-down=false' %s | FileCheck %s
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// RUN: mlir-opt -test-greedy-patterns='top-down=true' %s | FileCheck %s
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// RUN: mlir-opt -test-greedy-patterns='cse-constants=false' %s | FileCheck %s --check-prefix=NOCSE
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// RUN: mlir-opt -test-greedy-patterns='fold=false' %s | FileCheck %s --check-prefix=NOFOLD
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func.func @foo() -> i32 {
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%c42 = arith.constant 42 : i32
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// The new operation should be present in the output and contain an attribute
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// with value "42" that results from folding.
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// CHECK: "test.op_in_place_fold"(%{{.*}}) <{attr = 42 : i32}
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%0 = "test.op_in_place_fold_anchor"(%c42) : (i32) -> (i32)
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return %0 : i32
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}
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func.func @test_fold_before_previously_folded_op() -> (i32, i32) {
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// When folding two constants will be generated and uniqued. Check that the
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// uniqued constant properly dominates both uses.
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// CHECK: %[[CST:.+]] = arith.constant true
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// CHECK-NEXT: "test.cast"(%[[CST]]) : (i1) -> i32
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// CHECK-NEXT: "test.cast"(%[[CST]]) : (i1) -> i32
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%0 = "test.cast"() {test_fold_before_previously_folded_op} : () -> (i32)
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%1 = "test.cast"() {test_fold_before_previously_folded_op} : () -> (i32)
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return %0, %1 : i32, i32
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}
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func.func @test_dont_reorder_constants() -> (i32, i32, i32) {
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// Test that we don't reorder existing constants during folding if it isn't
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// necessary.
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// CHECK: %[[CST:.+]] = arith.constant 1
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// CHECK-NEXT: %[[CST:.+]] = arith.constant 2
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// CHECK-NEXT: %[[CST:.+]] = arith.constant 3
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%0 = arith.constant 1 : i32
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%1 = arith.constant 2 : i32
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%2 = arith.constant 3 : i32
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return %0, %1, %2 : i32, i32, i32
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}
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// CHECK-LABEL: test_fold_nofold_nocse
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// NOCSE-LABEL: test_fold_nofold_nocse
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// NOFOLD-LABEL: test_fold_nofold_nocse
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func.func @test_fold_nofold_nocse() -> (i32, i32, i32, i32, i32, i32) {
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// Test either not folding or deduping constants.
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// Testing folding. There should be only 4 constants here.
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// CHECK-NOT: arith.constant
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// CHECK-DAG: %[[CST:.+]] = arith.constant 0
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// CHECK-DAG: %[[CST:.+]] = arith.constant 1
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// CHECK-DAG: %[[CST:.+]] = arith.constant 2
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// CHECK-DAG: %[[CST:.+]] = arith.constant 3
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// CHECK-NOT: arith.constant
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// CHECK-NEXT: return
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// Testing not-CSE'ing. In this case we have the 3 original constants and 3
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// produced by folding.
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// NOCSE-DAG: arith.constant 0 : i32
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// NOCSE-DAG: arith.constant 1 : i32
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// NOCSE-DAG: arith.constant 2 : i32
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// NOCSE-DAG: arith.constant 1 : i32
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// NOCSE-DAG: arith.constant 2 : i32
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// NOCSE-DAG: arith.constant 3 : i32
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// NOCSE-NEXT: return
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// Testing not folding. In this case we just have the original constants.
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// NOFOLD-DAG: %[[CST:.+]] = arith.constant 0
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// NOFOLD-DAG: %[[CST:.+]] = arith.constant 1
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// NOFOLD-DAG: %[[CST:.+]] = arith.constant 2
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// NOFOLD: arith.addi
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// NOFOLD: arith.addi
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// NOFOLD: arith.addi
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%c0 = arith.constant 0 : i32
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%c1 = arith.constant 1 : i32
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%c2 = arith.constant 2 : i32
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%0 = arith.addi %c0, %c1 : i32
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%1 = arith.addi %0, %c1 : i32
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%2 = arith.addi %c2, %c1 : i32
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return %0, %1, %2, %c0, %c1, %c2 : i32, i32, i32, i32, i32, i32
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}
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