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// RUN: mlir-translate -no-implicit-module -test-spirv-roundtrip -split-input-file %s | FileCheck %s
// Selection with both then and else branches
spirv.module Logical GLSL450 requires #spirv.vce<v1.0, [Shader], []> {
// CHECK-LABEL: @selection
spirv.func @selection(%cond: i1) -> () "None" {
// CHECK-NEXT: spirv.Constant 0
// CHECK-NEXT: spirv.Variable
// CHECK: spirv.Branch ^[[BB:.+]]
// CHECK-NEXT: ^[[BB]]:
%zero = spirv.Constant 0: i32
%one = spirv.Constant 1: i32
%two = spirv.Constant 2: i32
%var = spirv.Variable init(%zero) : !spirv.ptr<i32, Function>
// CHECK-NEXT: spirv.mlir.selection control(Flatten)
spirv.mlir.selection control(Flatten) {
// CHECK-NEXT: spirv.BranchConditional %{{.*}} [5, 10], ^[[THEN:.+]], ^[[ELSE:.+]]
spirv.BranchConditional %cond [5, 10], ^then, ^else
// CHECK-NEXT: ^[[THEN]]:
^then:
// CHECK-NEXT: spirv.Constant 1
// CHECK-NEXT: spirv.Store
spirv.Store "Function" %var, %one : i32
// CHECK-NEXT: spirv.Branch ^[[MERGE:.+]]
spirv.Branch ^merge
// CHECK-NEXT: ^[[ELSE]]:
^else:
// CHECK-NEXT: spirv.Constant 2
// CHECK-NEXT: spirv.Store
spirv.Store "Function" %var, %two : i32
// CHECK-NEXT: spirv.Branch ^[[MERGE]]
spirv.Branch ^merge
// CHECK-NEXT: ^[[MERGE]]:
^merge:
// CHECK-NEXT: spirv.mlir.merge
spirv.mlir.merge
}
spirv.Return
}
spirv.func @main() -> () "None" {
spirv.Return
}
spirv.EntryPoint "GLCompute" @main
spirv.ExecutionMode @main "LocalSize", 1, 1, 1
}
// -----
// Selection with only then branch
// Selection in function entry block
spirv.module Logical GLSL450 requires #spirv.vce<v1.0, [Shader], []> {
// CHECK-LABEL: spirv.func @selection
// CHECK-SAME: (%[[ARG:.*]]: i1)
spirv.func @selection(%cond: i1) -> (i32) "None" {
// CHECK: spirv.Branch ^[[BB:.+]]
// CHECK-NEXT: ^[[BB]]:
// CHECK-NEXT: spirv.mlir.selection
spirv.mlir.selection {
// CHECK-NEXT: spirv.BranchConditional %[[ARG]], ^[[THEN:.+]], ^[[ELSE:.+]]
spirv.BranchConditional %cond, ^then, ^merge
// CHECK: ^[[THEN]]:
^then:
%zero = spirv.Constant 0 : i32
spirv.ReturnValue %zero : i32
// CHECK: ^[[ELSE]]:
^merge:
// CHECK-NEXT: spirv.mlir.merge
spirv.mlir.merge
}
%one = spirv.Constant 1 : i32
spirv.ReturnValue %one : i32
}
spirv.func @main() -> () "None" {
spirv.Return
}
spirv.EntryPoint "GLCompute" @main
spirv.ExecutionMode @main "LocalSize", 1, 1, 1
}
// -----
// Selection with control flow afterwards
// SSA value def before selection and use after selection
spirv.module Logical GLSL450 requires #spirv.vce<v1.0, [Shader], []> {
// CHECK-LABEL: @selection_cf()
spirv.func @selection_cf() -> () "None" {
%true = spirv.Constant true
%false = spirv.Constant false
%zero = spirv.Constant 0 : i32
%one = spirv.Constant 1 : i32
// CHECK-NEXT: %[[VAR:.+]] = spirv.Variable
%var = spirv.Variable : !spirv.ptr<i1, Function>
// CHECK-NEXT: spirv.Branch ^[[BB:.+]]
// CHECK-NEXT: ^[[BB]]:
// CHECK-NEXT: spirv.mlir.selection {
spirv.mlir.selection {
// CHECK: spirv.BranchConditional %{{.+}}, ^[[THEN0:.+]], ^[[ELSE0:.+]]
spirv.BranchConditional %true, ^then0, ^else0
// CHECK-NEXT: ^[[THEN0]]:
// CHECK: spirv.Store "Function" %[[VAR]]
// CHECK-NEXT: spirv.Branch ^[[MERGE:.+]]
^then0:
spirv.Store "Function" %var, %true : i1
spirv.Branch ^merge
// CHECK-NEXT: ^[[ELSE0]]:
// CHECK: spirv.Store "Function" %[[VAR]]
// CHECK-NEXT: spirv.Branch ^[[MERGE]]
^else0:
spirv.Store "Function" %var, %false : i1
spirv.Branch ^merge
// CHECK-NEXT: ^[[MERGE]]:
// CHECK-NEXT: spirv.mlir.merge
^merge:
spirv.mlir.merge
// CHECK-NEXT: }
}
// CHECK-NEXT: spirv.Load "Function" %[[VAR]]
%cond = spirv.Load "Function" %var : i1
// CHECK: spirv.BranchConditional %1, ^[[THEN1:.+]](%{{.+}} : i32), ^[[ELSE1:.+]](%{{.+}}, %{{.+}} : i32, i32)
spirv.BranchConditional %cond, ^then1(%one: i32), ^else1(%zero, %zero: i32, i32)
// CHECK-NEXT: ^[[THEN1]](%{{.+}}: i32):
// CHECK-NEXT: spirv.Return
^then1(%arg0: i32):
spirv.Return
// CHECK-NEXT: ^[[ELSE1]](%{{.+}}: i32, %{{.+}}: i32):
// CHECK-NEXT: spirv.Return
^else1(%arg1: i32, %arg2: i32):
spirv.Return
}
}
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