tomteb
/
carbon-lang


			
				
					
						
						
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							// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
// Exceptions. See /LICENSE for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP:   bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/if_expr/control_flow.carbon
// TIP: To dump output, run:
// TIP:   bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/if_expr/control_flow.carbon

fn A() -> i32 { return 1; }
fn B() -> i32 { return 2; }

fn F(b: bool) -> i32 {
  return if b then A() else B();
}

// CHECK:STDOUT: --- control_flow.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT:   %int_32: Core.IntLiteral = int_value 32 [template]
// CHECK:STDOUT:   %i32: type = class_type @Int, @Int(%int_32) [template]
// CHECK:STDOUT:   %A.type: type = fn_type @A [template]
// CHECK:STDOUT:   %A: %A.type = struct_value () [template]
// CHECK:STDOUT:   %int_1.1: Core.IntLiteral = int_value 1 [template]
// CHECK:STDOUT:   %Convert.type.2: type = fn_type @Convert.1, @ImplicitAs(%i32) [template]
// CHECK:STDOUT:   %Convert.type.10: type = fn_type @Convert.2, @impl.1(%int_32) [template]
// CHECK:STDOUT:   %Convert.10: %Convert.type.10 = struct_value () [template]
// CHECK:STDOUT:   %interface.19: <witness> = interface_witness (%Convert.10) [template]
// CHECK:STDOUT:   %Convert.bound.1: <bound method> = bound_method %int_1.1, %Convert.10 [template]
// CHECK:STDOUT:   %Convert.specific_fn.1: <specific function> = specific_function %Convert.bound.1, @Convert.2(%int_32) [template]
// CHECK:STDOUT:   %int_1.2: %i32 = int_value 1 [template]
// CHECK:STDOUT:   %B.type: type = fn_type @B [template]
// CHECK:STDOUT:   %B: %B.type = struct_value () [template]
// CHECK:STDOUT:   %int_2.1: Core.IntLiteral = int_value 2 [template]
// CHECK:STDOUT:   %Convert.bound.2: <bound method> = bound_method %int_2.1, %Convert.10 [template]
// CHECK:STDOUT:   %Convert.specific_fn.2: <specific function> = specific_function %Convert.bound.2, @Convert.2(%int_32) [template]
// CHECK:STDOUT:   %int_2.2: %i32 = int_value 2 [template]
// CHECK:STDOUT:   %Bool.type: type = fn_type @Bool [template]
// CHECK:STDOUT:   %Bool: %Bool.type = struct_value () [template]
// CHECK:STDOUT:   %F.type: type = fn_type @F [template]
// CHECK:STDOUT:   %F: %F.type = struct_value () [template]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
// CHECK:STDOUT:     .Int = %import_ref.1
// CHECK:STDOUT:     .ImplicitAs = %import_ref.5
// CHECK:STDOUT:     .Bool = %import_ref.229
// CHECK:STDOUT:     import Core//prelude
// CHECK:STDOUT:     import Core//prelude/...
// CHECK:STDOUT:   }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT:   package: <namespace> = namespace [template] {
// CHECK:STDOUT:     .Core = imports.%Core
// CHECK:STDOUT:     .A = %A.decl
// CHECK:STDOUT:     .B = %B.decl
// CHECK:STDOUT:     .F = %F.decl
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %Core.import = import Core
// CHECK:STDOUT:   %A.decl: %A.type = fn_decl @A [template = constants.%A] {
// CHECK:STDOUT:     %return.patt: %i32 = return_slot_pattern
// CHECK:STDOUT:     %return.param_patt: %i32 = out_param_pattern %return.patt, runtime_param0
// CHECK:STDOUT:   } {
// CHECK:STDOUT:     %int_32: Core.IntLiteral = int_value 32 [template = constants.%int_32]
// CHECK:STDOUT:     %i32: type = class_type @Int, @Int(constants.%int_32) [template = constants.%i32]
// CHECK:STDOUT:     %return.param: ref %i32 = out_param runtime_param0
// CHECK:STDOUT:     %return: ref %i32 = return_slot %return.param
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %B.decl: %B.type = fn_decl @B [template = constants.%B] {
// CHECK:STDOUT:     %return.patt: %i32 = return_slot_pattern
// CHECK:STDOUT:     %return.param_patt: %i32 = out_param_pattern %return.patt, runtime_param0
// CHECK:STDOUT:   } {
// CHECK:STDOUT:     %int_32: Core.IntLiteral = int_value 32 [template = constants.%int_32]
// CHECK:STDOUT:     %i32: type = class_type @Int, @Int(constants.%int_32) [template = constants.%i32]
// CHECK:STDOUT:     %return.param: ref %i32 = out_param runtime_param0
// CHECK:STDOUT:     %return: ref %i32 = return_slot %return.param
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %F.decl: %F.type = fn_decl @F [template = constants.%F] {
// CHECK:STDOUT:     %b.patt: bool = binding_pattern b
// CHECK:STDOUT:     %b.param_patt: bool = value_param_pattern %b.patt, runtime_param0
// CHECK:STDOUT:     %return.patt: %i32 = return_slot_pattern
// CHECK:STDOUT:     %return.param_patt: %i32 = out_param_pattern %return.patt, runtime_param1
// CHECK:STDOUT:   } {
// CHECK:STDOUT:     %int_32: Core.IntLiteral = int_value 32 [template = constants.%int_32]
// CHECK:STDOUT:     %i32: type = class_type @Int, @Int(constants.%int_32) [template = constants.%i32]
// CHECK:STDOUT:     %b.param: bool = value_param runtime_param0
// CHECK:STDOUT:     %.loc14_9.1: type = splice_block %.loc14_9.3 [template = bool] {
// CHECK:STDOUT:       %bool.make_type: init type = call constants.%Bool() [template = bool]
// CHECK:STDOUT:       %.loc14_9.2: type = value_of_initializer %bool.make_type [template = bool]
// CHECK:STDOUT:       %.loc14_9.3: type = converted %bool.make_type, %.loc14_9.2 [template = bool]
// CHECK:STDOUT:     }
// CHECK:STDOUT:     %b: bool = bind_name b, %b.param
// CHECK:STDOUT:     %return.param: ref %i32 = out_param runtime_param1
// CHECK:STDOUT:     %return: ref %i32 = return_slot %return.param
// CHECK:STDOUT:   }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @A() -> %i32 {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT:   %int_1: Core.IntLiteral = int_value 1 [template = constants.%int_1.1]
// CHECK:STDOUT:   %impl.elem0: %Convert.type.2 = interface_witness_access constants.%interface.19, element0 [template = constants.%Convert.10]
// CHECK:STDOUT:   %Convert.bound: <bound method> = bound_method %int_1, %impl.elem0 [template = constants.%Convert.bound.1]
// CHECK:STDOUT:   %Convert.specific_fn: <specific function> = specific_function %Convert.bound, @Convert.2(constants.%int_32) [template = constants.%Convert.specific_fn.1]
// CHECK:STDOUT:   %int.convert_checked: init %i32 = call %Convert.specific_fn(%int_1) [template = constants.%int_1.2]
// CHECK:STDOUT:   %.loc11_25.1: %i32 = value_of_initializer %int.convert_checked [template = constants.%int_1.2]
// CHECK:STDOUT:   %.loc11_25.2: %i32 = converted %int_1, %.loc11_25.1 [template = constants.%int_1.2]
// CHECK:STDOUT:   return %.loc11_25.2
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @B() -> %i32 {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT:   %int_2: Core.IntLiteral = int_value 2 [template = constants.%int_2.1]
// CHECK:STDOUT:   %impl.elem0: %Convert.type.2 = interface_witness_access constants.%interface.19, element0 [template = constants.%Convert.10]
// CHECK:STDOUT:   %Convert.bound: <bound method> = bound_method %int_2, %impl.elem0 [template = constants.%Convert.bound.2]
// CHECK:STDOUT:   %Convert.specific_fn: <specific function> = specific_function %Convert.bound, @Convert.2(constants.%int_32) [template = constants.%Convert.specific_fn.2]
// CHECK:STDOUT:   %int.convert_checked: init %i32 = call %Convert.specific_fn(%int_2) [template = constants.%int_2.2]
// CHECK:STDOUT:   %.loc12_25.1: %i32 = value_of_initializer %int.convert_checked [template = constants.%int_2.2]
// CHECK:STDOUT:   %.loc12_25.2: %i32 = converted %int_2, %.loc12_25.1 [template = constants.%int_2.2]
// CHECK:STDOUT:   return %.loc12_25.2
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F(%b.param_patt: bool) -> %i32 {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT:   %b.ref: bool = name_ref b, %b
// CHECK:STDOUT:   if %b.ref br !if.expr.then else br !if.expr.else
// CHECK:STDOUT:
// CHECK:STDOUT: !if.expr.then:
// CHECK:STDOUT:   %A.ref: %A.type = name_ref A, file.%A.decl [template = constants.%A]
// CHECK:STDOUT:   %A.call: init %i32 = call %A.ref()
// CHECK:STDOUT:   %.loc15_22.1: %i32 = value_of_initializer %A.call
// CHECK:STDOUT:   %.loc15_22.2: %i32 = converted %A.call, %.loc15_22.1
// CHECK:STDOUT:   br !if.expr.result(%.loc15_22.2)
// CHECK:STDOUT:
// CHECK:STDOUT: !if.expr.else:
// CHECK:STDOUT:   %B.ref: %B.type = name_ref B, file.%B.decl [template = constants.%B]
// CHECK:STDOUT:   %B.call: init %i32 = call %B.ref()
// CHECK:STDOUT:   %.loc15_24.1: %i32 = value_of_initializer %B.call
// CHECK:STDOUT:   %.loc15_24.2: %i32 = converted %B.call, %.loc15_24.1
// CHECK:STDOUT:   br !if.expr.result(%.loc15_24.2)
// CHECK:STDOUT:
// CHECK:STDOUT: !if.expr.result:
// CHECK:STDOUT:   %.loc15_10: %i32 = block_arg !if.expr.result
// CHECK:STDOUT:   return %.loc15_10
// CHECK:STDOUT: }
// CHECK:STDOUT: