derek.holloway
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63 lines
2.5 KiB
MLIR
63 lines
2.5 KiB
MLIR
// REQUIRES: asserts
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// RUN: mlir-opt %s --pass-pipeline="builtin.module(llvm.func(sroa))" --split-input-file --mlir-pass-statistics 2>&1 >/dev/null | FileCheck %s
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// CHECK: SROA
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// CHECK-NEXT: (S) 1 destructured slots
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// CHECK-NEXT: (S) 2 max subelement number
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// CHECK-NEXT: (S) 1 slots with memory benefit
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llvm.func @basic() -> i32 {
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%0 = llvm.mlir.constant(1 : i32) : i32
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%1 = llvm.alloca %0 x !llvm.struct<"foo", (i32, i32)> {alignment = 8 : i64} : (i32) -> !llvm.ptr
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%2 = llvm.getelementptr inbounds %1[0, 1] : (!llvm.ptr) -> !llvm.ptr, !llvm.struct<"foo", (i32, i32)>
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%3 = llvm.load %2 : !llvm.ptr -> i32
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llvm.return %3 : i32
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}
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// -----
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// CHECK: SROA
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// CHECK-NEXT: (S) 1 destructured slots
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// CHECK-NEXT: (S) 2 max subelement number
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// CHECK-NEXT: (S) 0 slots with memory benefit
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llvm.func @basic_no_memory_benefit() -> i32 {
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%0 = llvm.mlir.constant(1 : i32) : i32
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%1 = llvm.alloca %0 x !llvm.struct<"foo", (i32, i32)> {alignment = 8 : i64} : (i32) -> !llvm.ptr
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%2 = llvm.getelementptr inbounds %1[0, 0] : (!llvm.ptr) -> !llvm.ptr, !llvm.struct<"foo", (i32, i32)>
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%3 = llvm.getelementptr inbounds %1[0, 1] : (!llvm.ptr) -> !llvm.ptr, !llvm.struct<"foo", (i32, i32)>
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%4 = llvm.load %2 : !llvm.ptr -> i32
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%5 = llvm.load %3 : !llvm.ptr -> i32
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%6 = llvm.add %4, %5 : i32
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llvm.return %6 : i32
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}
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// -----
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// CHECK: SROA
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// CHECK-NEXT: (S) 1 destructured slots
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// CHECK-NEXT: (S) 10 max subelement number
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// CHECK-NEXT: (S) 1 slots with memory benefit
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llvm.func @basic_array() -> i32 {
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%0 = llvm.mlir.constant(1 : i32) : i32
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%1 = llvm.alloca %0 x !llvm.array<10 x i32> {alignment = 8 : i64} : (i32) -> !llvm.ptr
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%2 = llvm.getelementptr inbounds %1[0, 2] : (!llvm.ptr) -> !llvm.ptr, !llvm.array<10 x i32>
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%3 = llvm.load %2 : !llvm.ptr -> i32
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llvm.return %3 : i32
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}
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// -----
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// SROA is applied repeatedly here, peeling off layers of aggregates one after
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// the other, four times.
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// CHECK: SROA
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// CHECK-NEXT: (S) 4 destructured slots
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// CHECK-NEXT: (S) 10 max subelement number
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// CHECK-NEXT: (S) 4 slots with memory benefit
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llvm.func @multi_level_direct() -> i32 {
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%0 = llvm.mlir.constant(1 : i32) : i32
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%1 = llvm.alloca %0 x !llvm.struct<"foo", (i32, f64, struct<"bar", (i8, array<10 x array<10 x i32>>, i8)>)> {alignment = 8 : i64} : (i32) -> !llvm.ptr
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%2 = llvm.getelementptr inbounds %1[0, 2, 1, 5, 8] : (!llvm.ptr) -> !llvm.ptr, !llvm.struct<"foo", (i32, f64, struct<"bar", (i8, array<10 x array<10 x i32>>, i8)>)>
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%3 = llvm.load %2 : !llvm.ptr -> i32
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llvm.return %3 : i32
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}
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