| // RUN: mlir-opt -pass-pipeline='func(canonicalize)' %s | FileCheck %s |
| |
| // CHECK-LABEL: @propagate_constant |
| // CHECK-SAME: %[[arg1:.*]]: memref |
| func @propagate_constant(%arg1: memref<?xf32>) { |
| // The outer constant must be preserved because it still has uses. |
| // CHECK: %[[outer_cst:.*]] = constant 1 |
| %c1 = constant 1 : index |
| |
| // The constant must be dropped from the args list, but the memref should |
| // remain. |
| // CHECK: gpu.launch |
| // CHECK-SAME: args(%[[inner_arg:.*]] = %[[arg1]]) : memref |
| gpu.launch blocks(%bx, %by, %bz) in (%sbx = %c1, %sby = %c1, %sbz = %c1) |
| threads(%tx, %ty, %tz) in (%stx = %c1, %sty = %c1, %stz = %c1) |
| args(%x = %c1, %y = %arg1) : index, memref<?xf32> { |
| // The constant is propagated into the kernel body and used. |
| // CHECK: %[[inner_cst:.*]] = constant 1 |
| // CHECK: "foo"(%[[inner_cst]]) |
| "foo"(%x) : (index) -> () |
| |
| // CHECK: "bar"(%[[inner_arg]]) |
| "bar"(%y) : (memref<?xf32>) -> () |
| gpu.return |
| } |
| return |
| } |
| |
