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