| // RUN: mlir-opt -allow-unregistered-dialect -convert-scf-to-spirv %s -o - | FileCheck %s |
| |
| module attributes { |
| spv.target_env = #spv.target_env< |
| #spv.vce<v1.0, [Shader, Int64], [SPV_KHR_storage_buffer_storage_class]>, {}> |
| } { |
| |
| // CHECK-LABEL: @while_loop1 |
| func @while_loop1(%arg0: i32, %arg1: i32) -> i32 { |
| // CHECK-SAME: (%[[ARG1:.*]]: i32, %[[ARG2:.*]]: i32) |
| // CHECK: %[[INITVAR:.*]] = spv.Constant 2 : i32 |
| // CHECK: %[[VAR1:.*]] = spv.Variable : !spv.ptr<i32, Function> |
| // CHECK: spv.mlir.loop { |
| // CHECK: spv.Branch ^[[HEADER:.*]](%[[ARG1]] : i32) |
| // CHECK: ^[[HEADER]](%[[INDVAR1:.*]]: i32): |
| // CHECK: %[[CMP:.*]] = spv.SLessThan %[[INDVAR1]], %[[ARG2]] : i32 |
| // CHECK: spv.Store "Function" %[[VAR1]], %[[INDVAR1]] : i32 |
| // CHECK: spv.BranchConditional %[[CMP]], ^[[BODY:.*]](%[[INDVAR1]] : i32), ^[[MERGE:.*]] |
| // CHECK: ^[[BODY]](%[[INDVAR2:.*]]: i32): |
| // CHECK: %[[UPDATED:.*]] = spv.IMul %[[INDVAR2]], %[[INITVAR]] : i32 |
| // CHECK: spv.Branch ^[[HEADER]](%[[UPDATED]] : i32) |
| // CHECK: ^[[MERGE]]: |
| // CHECK: spv.mlir.merge |
| // CHECK: } |
| %c2_i32 = arith.constant 2 : i32 |
| %0 = scf.while (%arg3 = %arg0) : (i32) -> (i32) { |
| %1 = arith.cmpi slt, %arg3, %arg1 : i32 |
| scf.condition(%1) %arg3 : i32 |
| } do { |
| ^bb0(%arg5: i32): |
| %1 = arith.muli %arg5, %c2_i32 : i32 |
| scf.yield %1 : i32 |
| } |
| // CHECK: %[[OUT:.*]] = spv.Load "Function" %[[VAR1]] : i32 |
| // CHECK: spv.ReturnValue %[[OUT]] : i32 |
| return %0 : i32 |
| } |
| |
| // ----- |
| |
| // CHECK-LABEL: @while_loop2 |
| func @while_loop2(%arg0: f32) -> i64 { |
| // CHECK-SAME: (%[[ARG:.*]]: f32) |
| // CHECK: %[[VAR:.*]] = spv.Variable : !spv.ptr<i64, Function> |
| // CHECK: spv.mlir.loop { |
| // CHECK: spv.Branch ^[[HEADER:.*]](%[[ARG]] : f32) |
| // CHECK: ^[[HEADER]](%[[INDVAR1:.*]]: f32): |
| // CHECK: %[[SHARED:.*]] = "foo.shared_compute"(%[[INDVAR1]]) : (f32) -> i64 |
| // CHECK: %[[CMP:.*]] = "foo.evaluate_condition"(%[[INDVAR1]], %[[SHARED]]) : (f32, i64) -> i1 |
| // CHECK: spv.Store "Function" %[[VAR]], %[[SHARED]] : i64 |
| // CHECK: spv.BranchConditional %[[CMP]], ^[[BODY:.*]](%[[SHARED]] : i64), ^[[MERGE:.*]] |
| // CHECK: ^[[BODY]](%[[INDVAR2:.*]]: i64): |
| // CHECK: %[[UPDATED:.*]] = "foo.payload"(%[[INDVAR2]]) : (i64) -> f32 |
| // CHECK: spv.Branch ^[[HEADER]](%[[UPDATED]] : f32) |
| // CHECK: ^[[MERGE]]: |
| // CHECK: spv.mlir.merge |
| // CHECK: } |
| %res = scf.while (%arg1 = %arg0) : (f32) -> i64 { |
| %shared = "foo.shared_compute"(%arg1) : (f32) -> i64 |
| %condition = "foo.evaluate_condition"(%arg1, %shared) : (f32, i64) -> i1 |
| scf.condition(%condition) %shared : i64 |
| } do { |
| ^bb0(%arg2: i64): |
| %res = "foo.payload"(%arg2) : (i64) -> f32 |
| scf.yield %res : f32 |
| } |
| // CHECK: %[[OUT:.*]] = spv.Load "Function" %[[VAR]] : i64 |
| // CHECK: spv.ReturnValue %[[OUT]] : i64 |
| return %res : i64 |
| } |
| |
| } // end module |
