mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-10-04 22:02:52 +01:00
Richard Smith
bc395eb889
When an `IntLiteral` appears as an operand of an `if` expression, convert it to `i32` for now, so that we don't reject things like `if cond then 1 else 2` due to having a non-constant value of type `IntLiteral`. For tuple indexing expressions such as `(a, b).0`, convert the index to type `IntLiteral`, not to type `i32`. This isn't strictly necessary to do in this PR, but avoids the need to provide an `IntLiteral` -> `i32` implicit conversion for `no_prelude` tests using this syntax.
91 lines
4.8 KiB
Plaintext
91 lines
4.8 KiB
Plaintext
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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// AUTOUPDATE
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// TIP: To test this file alone, run:
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// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/let/fail_generic.carbon
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// TIP: To dump output, run:
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// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/let/fail_generic.carbon
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// TODO: Should this be valid?
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fn F(a: i32) -> i32 {
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let T:! type = i32;
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// CHECK:STDERR: fail_generic.carbon:[[@LINE+7]]:3: error: cannot implicitly convert from `Core.IntLiteral` to `T` [ImplicitAsConversionFailure]
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// CHECK:STDERR: let x: T = 5;
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// CHECK:STDERR: ^~~~~~~~~~~~~
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// CHECK:STDERR: fail_generic.carbon:[[@LINE+4]]:3: note: type `Core.IntLiteral` does not implement interface `ImplicitAs(T)` [MissingImplInMemberAccessNote]
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// CHECK:STDERR: let x: T = 5;
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// CHECK:STDERR: ^~~~~~~~~~~~~
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// CHECK:STDERR:
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let x: T = 5;
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// CHECK:STDERR: fail_generic.carbon:[[@LINE+6]]:3: error: cannot implicitly convert from `T` to `i32` [ImplicitAsConversionFailure]
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// CHECK:STDERR: return x;
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// CHECK:STDERR: ^~~~~~~~~
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// CHECK:STDERR: fail_generic.carbon:[[@LINE+3]]:3: note: type `T` does not implement interface `ImplicitAs(i32)` [MissingImplInMemberAccessNote]
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// CHECK:STDERR: return x;
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// CHECK:STDERR: ^~~~~~~~~
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return x;
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}
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// CHECK:STDOUT: --- fail_generic.carbon
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// CHECK:STDOUT:
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// CHECK:STDOUT: constants {
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// CHECK:STDOUT: %Int32.type: type = fn_type @Int32 [template]
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// CHECK:STDOUT: %Int32: %Int32.type = struct_value () [template]
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// CHECK:STDOUT: %F.type: type = fn_type @F [template]
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// CHECK:STDOUT: %F: %F.type = struct_value () [template]
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// CHECK:STDOUT: %T: type = bind_symbolic_name T, 0 [symbolic]
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// CHECK:STDOUT: %.1: Core.IntLiteral = int_value 5 [template]
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: imports {
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// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [template] {
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// CHECK:STDOUT: .Int32 = %import_ref.1
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// CHECK:STDOUT: .ImplicitAs = %import_ref.2
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// CHECK:STDOUT: import Core//prelude
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// CHECK:STDOUT: import Core//prelude/...
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// CHECK:STDOUT: }
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: file {
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// CHECK:STDOUT: package: <namespace> = namespace [template] {
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// CHECK:STDOUT: .Core = imports.%Core
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// CHECK:STDOUT: .F = %F.decl
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %Core.import = import Core
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// CHECK:STDOUT: %F.decl: %F.type = fn_decl @F [template = constants.%F] {
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// CHECK:STDOUT: %a.patt: i32 = binding_pattern a
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// CHECK:STDOUT: %a.param_patt: i32 = value_param_pattern %a.patt, runtime_param0
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// CHECK:STDOUT: %return.patt: i32 = return_slot_pattern
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// CHECK:STDOUT: %return.param_patt: i32 = out_param_pattern %return.patt, runtime_param1
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// CHECK:STDOUT: } {
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// CHECK:STDOUT: %int.make_type_32.loc12_9: init type = call constants.%Int32() [template = i32]
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// CHECK:STDOUT: %.loc12_9.1: type = value_of_initializer %int.make_type_32.loc12_9 [template = i32]
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// CHECK:STDOUT: %.loc12_9.2: type = converted %int.make_type_32.loc12_9, %.loc12_9.1 [template = i32]
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// CHECK:STDOUT: %int.make_type_32.loc12_17: init type = call constants.%Int32() [template = i32]
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// CHECK:STDOUT: %.loc12_17.1: type = value_of_initializer %int.make_type_32.loc12_17 [template = i32]
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// CHECK:STDOUT: %.loc12_17.2: type = converted %int.make_type_32.loc12_17, %.loc12_17.1 [template = i32]
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// CHECK:STDOUT: %a.param: i32 = value_param runtime_param0
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// CHECK:STDOUT: %a: i32 = bind_name a, %a.param
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// CHECK:STDOUT: %return.param: ref i32 = out_param runtime_param1
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// CHECK:STDOUT: %return: ref i32 = return_slot %return.param
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// CHECK:STDOUT: }
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: fn @F(%a.param_patt: i32) -> i32 {
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// CHECK:STDOUT: !entry:
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// CHECK:STDOUT: %int.make_type_32.loc13: init type = call constants.%Int32() [template = i32]
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// CHECK:STDOUT: %.loc13_21.1: type = value_of_initializer %int.make_type_32.loc13 [template = i32]
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// CHECK:STDOUT: %.loc13_21.2: type = converted %int.make_type_32.loc13, %.loc13_21.1 [template = i32]
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// CHECK:STDOUT: %T: type = bind_symbolic_name T, 0, %.loc13_21.2 [symbolic = constants.%T]
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// CHECK:STDOUT: %T.ref: type = name_ref T, %T [symbolic = constants.%T]
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// CHECK:STDOUT: %.loc21_14: Core.IntLiteral = int_value 5 [template = constants.%.1]
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// CHECK:STDOUT: %.loc21_15: %T = converted %.loc21_14, <error> [template = <error>]
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// CHECK:STDOUT: %x: %T = bind_name x, <error>
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// CHECK:STDOUT: %x.ref: %T = name_ref x, %x
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// CHECK:STDOUT: %.loc28: i32 = converted %x.ref, <error> [template = <error>]
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// CHECK:STDOUT: return <error>
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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