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TheRock/compiler/amd-llvm/mlir/test/Conversion/SCFToEmitC/switch.mlir
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derek.holloway 7502bf64a4
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

124 lines
4.7 KiB
MLIR

// RUN: mlir-opt -allow-unregistered-dialect -convert-scf-to-emitc %s | FileCheck %s
// RUN: mlir-opt -allow-unregistered-dialect -convert-to-emitc="filter-dialects=scf" %s | FileCheck %s
// CHECK-LABEL: func.func @switch_no_result(
// CHECK-SAME: %[[ARG_0:.*]]: index) {
// CHECK: %[[VAL_0:.*]] = builtin.unrealized_conversion_cast %[[ARG_0]] : index to !emitc.size_t
// CHECK: emitc.switch %[[VAL_0]]
// CHECK: case 2 {
// CHECK: %[[VAL_1:.*]] = arith.constant 10 : i32
// CHECK: yield
// CHECK: }
// CHECK: case 5 {
// CHECK: %[[VAL_2:.*]] = arith.constant 20 : i32
// CHECK: yield
// CHECK: }
// CHECK: default {
// CHECK: %[[VAL_3:.*]] = arith.constant 30 : i32
// CHECK: }
// CHECK: return
// CHECK: }
func.func @switch_no_result(%arg0 : index) {
scf.index_switch %arg0
case 2 {
%1 = arith.constant 10 : i32
scf.yield
}
case 5 {
%2 = arith.constant 20 : i32
scf.yield
}
default {
%3 = arith.constant 30 : i32
}
return
}
// CHECK-LABEL: func.func @switch_one_result(
// CHECK-SAME: %[[ARG_0:.*]]: index) {
// CHECK: %[[VAL_0:.*]] = builtin.unrealized_conversion_cast %[[ARG_0]] : index to !emitc.size_t
// CHECK: %[[VAL_1:.*]] = "emitc.variable"() <{value = #emitc.opaque<"">}> : () -> !emitc.lvalue<i32>
// CHECK: emitc.switch %[[VAL_0]]
// CHECK: case 2 {
// CHECK: %[[VAL_2:.*]] = arith.constant 10 : i32
// CHECK: assign %[[VAL_2]] : i32 to %[[VAL_1]] : <i32>
// CHECK: yield
// CHECK: }
// CHECK: case 5 {
// CHECK: %[[VAL_3:.*]] = arith.constant 20 : i32
// CHECK: assign %[[VAL_3]] : i32 to %[[VAL_1]] : <i32>
// CHECK: yield
// CHECK: }
// CHECK: default {
// CHECK: %[[VAL_4:.*]] = arith.constant 30 : i32
// CHECK: assign %[[VAL_4]] : i32 to %[[VAL_1]] : <i32>
// CHECK: }
// CHECK: return
// CHECK: }
func.func @switch_one_result(%arg0 : index) {
%0 = scf.index_switch %arg0 -> i32
case 2 {
%1 = arith.constant 10 : i32
scf.yield %1 : i32
}
case 5 {
%2 = arith.constant 20 : i32
scf.yield %2 : i32
}
default {
%3 = arith.constant 30 : i32
scf.yield %3 : i32
}
return
}
// CHECK-LABEL: func.func @switch_two_results(
// CHECK-SAME: %[[ARG_0:.*]]: index) -> (i32, f32) {
// CHECK: %[[VAL_0:.*]] = builtin.unrealized_conversion_cast %[[ARG_0]] : index to !emitc.size_t
// CHECK: %[[VAL_1:.*]] = "emitc.variable"() <{value = #emitc.opaque<"">}> : () -> !emitc.lvalue<i32>
// CHECK: %[[VAL_2:.*]] = "emitc.variable"() <{value = #emitc.opaque<"">}> : () -> !emitc.lvalue<f32>
// CHECK: emitc.switch %[[VAL_0]]
// CHECK: case 2 {
// CHECK: %[[VAL_3:.*]] = arith.constant 10 : i32
// CHECK: %[[VAL_4:.*]] = arith.constant 1.200000e+00 : f32
// CHECK: assign %[[VAL_3]] : i32 to %[[VAL_1]] : <i32>
// CHECK: assign %[[VAL_4]] : f32 to %[[VAL_2]] : <f32>
// CHECK: yield
// CHECK: }
// CHECK: case 5 {
// CHECK: %[[VAL_5:.*]] = arith.constant 20 : i32
// CHECK: %[[VAL_6:.*]] = arith.constant 2.400000e+00 : f32
// CHECK: assign %[[VAL_5]] : i32 to %[[VAL_1]] : <i32>
// CHECK: assign %[[VAL_6]] : f32 to %[[VAL_2]] : <f32>
// CHECK: yield
// CHECK: }
// CHECK: default {
// CHECK: %[[VAL_7:.*]] = arith.constant 30 : i32
// CHECK: %[[VAL_8:.*]] = arith.constant 3.600000e+00 : f32
// CHECK: assign %[[VAL_7]] : i32 to %[[VAL_1]] : <i32>
// CHECK: assign %[[VAL_8]] : f32 to %[[VAL_2]] : <f32>
// CHECK: }
// CHECK: %[[RES_1:.*]] = emitc.load %[[VAL_1]] : <i32>
// CHECK: %[[RES_2:.*]] = emitc.load %[[VAL_2]] : <f32>
// CHECK: return %[[RES_1]], %[[RES_2]] : i32, f32
// CHECK: }
func.func @switch_two_results(%arg0 : index) -> (i32, f32) {
%0, %1 = scf.index_switch %arg0 -> i32, f32
case 2 {
%2 = arith.constant 10 : i32
%3 = arith.constant 1.2 : f32
scf.yield %2, %3 : i32, f32
}
case 5 {
%4 = arith.constant 20 : i32
%5 = arith.constant 2.4 : f32
scf.yield %4, %5 : i32, f32
}
default {
%6 = arith.constant 30 : i32
%7 = arith.constant 3.6 : f32
scf.yield %6, %7 : i32, f32
}
return %0, %1 : i32, f32
}