61 lines
1.7 KiB
MLIR
61 lines
1.7 KiB
MLIR
// REQUIRES: asserts
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// RUN: mlir-opt %s --pass-pipeline='builtin.module(func.func(mem2reg))' --split-input-file --mlir-pass-statistics 2>&1 >/dev/null | FileCheck %s
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// CHECK: Mem2Reg
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// CHECK-NEXT: (S) 0 new block args
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// CHECK-NEXT: (S) 1 promoted slots
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func.func @basic() -> i32 {
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%0 = arith.constant 5 : i32
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%1 = memref.alloca() : memref<i32>
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memref.store %0, %1[] : memref<i32>
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%2 = memref.load %1[] : memref<i32>
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return %2 : i32
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}
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// -----
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// CHECK: Mem2Reg
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// CHECK-NEXT: (S) 0 new block args
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// CHECK-NEXT: (S) 0 promoted slots
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func.func @no_alloca() -> i32 {
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%0 = arith.constant 5 : i32
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return %0 : i32
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}
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// -----
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// CHECK: Mem2Reg
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// CHECK-NEXT: (S) 2 new block args
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// CHECK-NEXT: (S) 1 promoted slots
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func.func @cycle(%arg0: i64, %arg1: i1, %arg2: i64) {
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%alloca = memref.alloca() : memref<i64>
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memref.store %arg2, %alloca[] : memref<i64>
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cf.cond_br %arg1, ^bb1, ^bb2
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^bb1:
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%use = memref.load %alloca[] : memref<i64>
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call @use(%use) : (i64) -> ()
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memref.store %arg0, %alloca[] : memref<i64>
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cf.br ^bb2
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^bb2:
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cf.br ^bb1
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}
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func.func @use(%arg: i64) { return }
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// -----
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// CHECK: Mem2Reg
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// CHECK-NEXT: (S) 0 new block args
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// CHECK-NEXT: (S) 3 promoted slots
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func.func @recursive(%arg: i64) -> i64 {
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%alloca0 = memref.alloca() : memref<memref<memref<i64>>>
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%alloca1 = memref.alloca() : memref<memref<i64>>
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%alloca2 = memref.alloca() : memref<i64>
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memref.store %arg, %alloca2[] : memref<i64>
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memref.store %alloca2, %alloca1[] : memref<memref<i64>>
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memref.store %alloca1, %alloca0[] : memref<memref<memref<i64>>>
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%load0 = memref.load %alloca0[] : memref<memref<memref<i64>>>
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%load1 = memref.load %load0[] : memref<memref<i64>>
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%load2 = memref.load %load1[] : memref<i64>
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return %load2 : i64
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}
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