| // RUN: mlir-opt %s -canonicalize | FileCheck %s |
| |
| //===----------------------------------------------------------------------===// |
| // UnrealizedConversionCastOp |
| //===----------------------------------------------------------------------===// |
| |
| // Test folding conversion casts feeding into other casts. |
| // CHECK-LABEL: func @multiple_conversion_casts |
| // CHECK-SAME: %[[ARG0:.*]]: i32, %[[ARG1:.*]]: |
| func @multiple_conversion_casts(%arg0: i32, %arg1: i32) -> (i32, i32) { |
| // CHECK-NOT: unrealized_conversion_cast |
| // CHECK: return %[[ARG0]], %[[ARG1]] |
| %inputs:2 = builtin.unrealized_conversion_cast %arg0, %arg1 : i32, i32 to i64, i64 |
| %outputs:2 = builtin.unrealized_conversion_cast %inputs#0, %inputs#1 : i64, i64 to i32, i32 |
| return %outputs#0, %outputs#1 : i32, i32 |
| } |
| |
| // CHECK-LABEL: func @multiple_conversion_casts |
| func @multiple_conversion_casts_failure(%arg0: i32, %arg1: i32, %arg2: i64) -> (i32, i32) { |
| // CHECK: unrealized_conversion_cast |
| // CHECK: unrealized_conversion_cast |
| %inputs:2 = builtin.unrealized_conversion_cast %arg0, %arg1 : i32, i32 to i64, i64 |
| %outputs:2 = builtin.unrealized_conversion_cast %arg2, %inputs#1 : i64, i64 to i32, i32 |
| return %outputs#0, %outputs#1 : i32, i32 |
| } |
