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carbon-lang/toolchain/check/testdata/class/method.carbon
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Richard Smith b138c90c9e Use constant evaluation to determine the identity of types. (#3617) 
Remove the type canonicalization mechanism and instead rely on constant
canonicalization to deduplicate types.

Rename the `Canonicalize*Type` functions to reflect that they're no
longer performing canonicalization. Switch code that creates types due
to semantic checking, rather than due to source syntax, to directly
create type constants through evaluation rather than creating an
instruction and evaluating it to produce a separate constant
representation.

The mapping from `const (const T)` that was previously performed by type
canonicalization is now implemented in expression evaluation instead.

The value `<error>` is now treated as a constant value, with a special
property that an instruction involving `<error>` that could possibly be
constant evaluates to `<error>`. This helps avoid producing follow-on
errors when an error occurs as a subexpression of an expression, such as
a type, that is intended to be constant.
2024-01-19 00:47:37 +00:00

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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
class Class {
fn F[self: Class]() -> i32;
fn G[addr self: Class*]() -> i32;
var k: i32;
}
fn Class.F[self: Class]() -> i32 {
return self.k;
}
fn Call(c: Class) -> i32 {
// TODO: The sem-ir for this call doesn't distinguish the `self` argument from
// the explicit arguments.
return c.F();
}
fn CallOnConstBoundMethod() -> i32 {
return ({.k = 1} as Class).F();
}
fn CallWithAddr() -> i32 {
var c: Class;
return c.G();
}
fn CallFThroughPointer(p: Class*) -> i32 {
return (*p).F();
}
fn CallGThroughPointer(p: Class*) -> i32 {
return (*p).G();
}
fn Make() -> Class;
fn CallFOnInitializingExpr() -> i32 {
return Make().F();
}
fn CallGOnInitializingExpr() -> i32 {
return Make().G();
}
// CHECK:STDOUT: --- method.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %Class: type = class_type @Class [template]
// CHECK:STDOUT: %.1: type = ptr_type Class [template]
// CHECK:STDOUT: %.2: type = unbound_element_type Class, i32 [template]
// CHECK:STDOUT: %.3: type = struct_type {.k: i32} [template]
// CHECK:STDOUT: %.4: type = ptr_type {.k: i32} [template]
// CHECK:STDOUT: %.5: i32 = int_literal 1 [template]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace package, {.Class = %Class.decl, .Call = %Call, .CallOnConstBoundMethod = %CallOnConstBoundMethod, .CallWithAddr = %CallWithAddr, .CallFThroughPointer = %CallFThroughPointer, .CallGThroughPointer = %CallGThroughPointer, .Make = %Make, .CallFOnInitializingExpr = %CallFOnInitializingExpr, .CallGOnInitializingExpr = %CallGOnInitializingExpr} [template]
// CHECK:STDOUT: %Class.decl = class_decl @Class, ()
// CHECK:STDOUT: %F: <function> = fn_decl @F [template]
// CHECK:STDOUT: %Call: <function> = fn_decl @Call [template]
// CHECK:STDOUT: %CallOnConstBoundMethod: <function> = fn_decl @CallOnConstBoundMethod [template]
// CHECK:STDOUT: %CallWithAddr: <function> = fn_decl @CallWithAddr [template]
// CHECK:STDOUT: %CallFThroughPointer: <function> = fn_decl @CallFThroughPointer [template]
// CHECK:STDOUT: %CallGThroughPointer: <function> = fn_decl @CallGThroughPointer [template]
// CHECK:STDOUT: %Make: <function> = fn_decl @Make [template]
// CHECK:STDOUT: %CallFOnInitializingExpr: <function> = fn_decl @CallFOnInitializingExpr [template]
// CHECK:STDOUT: %CallGOnInitializingExpr: <function> = fn_decl @CallGOnInitializingExpr [template]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @Class {
// CHECK:STDOUT: %F: <function> = fn_decl @F [template]
// CHECK:STDOUT: %G: <function> = fn_decl @G [template]
// CHECK:STDOUT: %.loc11: <unbound element of class Class> = field_decl k, element0 [template]
// CHECK:STDOUT: %k: <unbound element of class Class> = bind_name k, %.loc11 [template = %.loc11]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .F = %F
// CHECK:STDOUT: .G = %G
// CHECK:STDOUT: .k = %k
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F[%self: Class]() -> i32 {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %self.ref: Class = name_ref self, %self
// CHECK:STDOUT: %.loc15_14.1: ref i32 = class_element_access %self.ref, element0
// CHECK:STDOUT: %.loc15_14.2: i32 = bind_value %.loc15_14.1
// CHECK:STDOUT: return %.loc15_14.2
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @G[addr %self: Class*]() -> i32;
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Call(%c: Class) -> i32 {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %c.ref: Class = name_ref c, %c
// CHECK:STDOUT: %.loc21_11: <bound method> = bound_method %c.ref, @Class.%F
// CHECK:STDOUT: %.loc21_13.1: init i32 = call %.loc21_11(%c.ref)
// CHECK:STDOUT: %.loc21_15: i32 = value_of_initializer %.loc21_13.1
// CHECK:STDOUT: %.loc21_13.2: i32 = converted %.loc21_13.1, %.loc21_15
// CHECK:STDOUT: return %.loc21_13.2
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @CallOnConstBoundMethod() -> i32 {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %.loc25_17: i32 = int_literal 1 [template = constants.%.5]
// CHECK:STDOUT: %.loc25_18.1: {.k: i32} = struct_literal (%.loc25_17)
// CHECK:STDOUT: %Class.ref: type = name_ref Class, constants.%Class [template = constants.%Class]
// CHECK:STDOUT: %.loc25_18.2: ref Class = temporary_storage
// CHECK:STDOUT: %.loc25_18.3: ref i32 = class_element_access %.loc25_18.2, element0
// CHECK:STDOUT: %.loc25_18.4: init i32 = initialize_from %.loc25_17 to %.loc25_18.3
// CHECK:STDOUT: %.loc25_18.5: init Class = class_init (%.loc25_18.4), %.loc25_18.2
// CHECK:STDOUT: %.loc25_18.6: ref Class = temporary %.loc25_18.2, %.loc25_18.5
// CHECK:STDOUT: %.loc25_18.7: ref Class = converted %.loc25_18.1, %.loc25_18.6
// CHECK:STDOUT: %.loc25_29: <bound method> = bound_method %.loc25_18.7, @Class.%F
// CHECK:STDOUT: %.loc25_18.8: Class = bind_value %.loc25_18.7
// CHECK:STDOUT: %.loc25_31.1: init i32 = call %.loc25_29(%.loc25_18.8)
// CHECK:STDOUT: %.loc25_33: i32 = value_of_initializer %.loc25_31.1
// CHECK:STDOUT: %.loc25_31.2: i32 = converted %.loc25_31.1, %.loc25_33
// CHECK:STDOUT: return %.loc25_31.2
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @CallWithAddr() -> i32 {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %Class.ref: type = name_ref Class, constants.%Class [template = constants.%Class]
// CHECK:STDOUT: %c.var: ref Class = var c
// CHECK:STDOUT: %c: ref Class = bind_name c, %c.var
// CHECK:STDOUT: %c.ref: ref Class = name_ref c, %c
// CHECK:STDOUT: %.loc30_11: <bound method> = bound_method %c.ref, @Class.%G
// CHECK:STDOUT: %.loc30_10: Class* = addr_of %c.ref
// CHECK:STDOUT: %.loc30_13.1: init i32 = call %.loc30_11(%.loc30_10)
// CHECK:STDOUT: %.loc30_15: i32 = value_of_initializer %.loc30_13.1
// CHECK:STDOUT: %.loc30_13.2: i32 = converted %.loc30_13.1, %.loc30_15
// CHECK:STDOUT: return %.loc30_13.2
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @CallFThroughPointer(%p: Class*) -> i32 {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %p.ref: Class* = name_ref p, %p
// CHECK:STDOUT: %.loc34_11.1: ref Class = deref %p.ref
// CHECK:STDOUT: %.loc34_14: <bound method> = bound_method %.loc34_11.1, @Class.%F
// CHECK:STDOUT: %.loc34_11.2: Class = bind_value %.loc34_11.1
// CHECK:STDOUT: %.loc34_16.1: init i32 = call %.loc34_14(%.loc34_11.2)
// CHECK:STDOUT: %.loc34_18: i32 = value_of_initializer %.loc34_16.1
// CHECK:STDOUT: %.loc34_16.2: i32 = converted %.loc34_16.1, %.loc34_18
// CHECK:STDOUT: return %.loc34_16.2
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @CallGThroughPointer(%p: Class*) -> i32 {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %p.ref: Class* = name_ref p, %p
// CHECK:STDOUT: %.loc38_11.1: ref Class = deref %p.ref
// CHECK:STDOUT: %.loc38_14: <bound method> = bound_method %.loc38_11.1, @Class.%G
// CHECK:STDOUT: %.loc38_11.2: Class* = addr_of %.loc38_11.1
// CHECK:STDOUT: %.loc38_16.1: init i32 = call %.loc38_14(%.loc38_11.2)
// CHECK:STDOUT: %.loc38_18: i32 = value_of_initializer %.loc38_16.1
// CHECK:STDOUT: %.loc38_16.2: i32 = converted %.loc38_16.1, %.loc38_18
// CHECK:STDOUT: return %.loc38_16.2
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Make() -> %return: Class;
// CHECK:STDOUT:
// CHECK:STDOUT: fn @CallFOnInitializingExpr() -> i32 {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %Make.ref: <function> = name_ref Make, file.%Make [template = file.%Make]
// CHECK:STDOUT: %.loc44_14.1: ref Class = temporary_storage
// CHECK:STDOUT: %.loc44_14.2: init Class = call %Make.ref() to %.loc44_14.1
// CHECK:STDOUT: %.loc44_14.3: ref Class = temporary %.loc44_14.1, %.loc44_14.2
// CHECK:STDOUT: %.loc44_16: <bound method> = bound_method %.loc44_14.3, @Class.%F
// CHECK:STDOUT: %.loc44_14.4: Class = bind_value %.loc44_14.3
// CHECK:STDOUT: %.loc44_18.1: init i32 = call %.loc44_16(%.loc44_14.4)
// CHECK:STDOUT: %.loc44_20: i32 = value_of_initializer %.loc44_18.1
// CHECK:STDOUT: %.loc44_18.2: i32 = converted %.loc44_18.1, %.loc44_20
// CHECK:STDOUT: return %.loc44_18.2
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @CallGOnInitializingExpr() -> i32 {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %Make.ref: <function> = name_ref Make, file.%Make [template = file.%Make]
// CHECK:STDOUT: %.loc48_14.1: ref Class = temporary_storage
// CHECK:STDOUT: %.loc48_14.2: init Class = call %Make.ref() to %.loc48_14.1
// CHECK:STDOUT: %.loc48_14.3: ref Class = temporary %.loc48_14.1, %.loc48_14.2
// CHECK:STDOUT: %.loc48_16: <bound method> = bound_method %.loc48_14.3, @Class.%G
// CHECK:STDOUT: %.loc48_14.4: Class* = addr_of %.loc48_14.3
// CHECK:STDOUT: %.loc48_18.1: init i32 = call %.loc48_16(%.loc48_14.4)
// CHECK:STDOUT: %.loc48_20: i32 = value_of_initializer %.loc48_18.1
// CHECK:STDOUT: %.loc48_18.2: i32 = converted %.loc48_18.1, %.loc48_20
// CHECK:STDOUT: return %.loc48_18.2
// CHECK:STDOUT: }
// CHECK:STDOUT:
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