mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-10-02 22:02:51 +01:00
Richard Smith
c6d35e1c4a
This implements a direction decided in a [recent discussion](https://docs.google.com/document/d/1Iut5f2TQBrtBNIduF4vJYOKfw7MbS8xH_J01_Q4e6Rk/edit?resourcekey=0-mc_vh5UzrzXfU4kO-3tOjA&tab=t.0#heading=h.mas1g68xx9ct) to switch away from "template constant" when naming a constant that doesn't depend on any generic parameters, because that creates confusion with template-dependent constant values that depend on a template parameter.
78 lines
4.1 KiB
Plaintext
78 lines
4.1 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/const/collapse.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/const/collapse.carbon
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// OK, `const (const i32)` is the same type as `const i32`.
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// CHECK:STDERR: collapse.carbon:[[@LINE+4]]:25: warning: `const` applied repeatedly to the same type has no additional effect [RepeatedConst]
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// CHECK:STDERR: fn F(p: const i32**) -> const (const i32)** {
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// CHECK:STDERR: ^~~~~~~~~~~~~~~~~
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// CHECK:STDERR:
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fn F(p: const i32**) -> const (const i32)** {
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return p;
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}
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// CHECK:STDOUT: --- collapse.carbon
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// CHECK:STDOUT:
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// CHECK:STDOUT: constants {
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// CHECK:STDOUT: %int_32: Core.IntLiteral = int_value 32 [concrete]
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// CHECK:STDOUT: %i32: type = class_type @Int, @Int(%int_32) [concrete]
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// CHECK:STDOUT: %const: type = const_type %i32 [concrete]
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// CHECK:STDOUT: %ptr.36b: type = ptr_type %const [concrete]
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// CHECK:STDOUT: %ptr.3bc: type = ptr_type %ptr.36b [concrete]
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// CHECK:STDOUT: %F.type: type = fn_type @F [concrete]
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// CHECK:STDOUT: %F: %F.type = struct_value () [concrete]
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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, [concrete] {
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// CHECK:STDOUT: .Int = %Core.Int
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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 [concrete] {
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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 [concrete = constants.%F] {
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// CHECK:STDOUT: %p.patt: %ptr.3bc = binding_pattern p
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// CHECK:STDOUT: %p.param_patt: %ptr.3bc = value_param_pattern %p.patt, runtime_param0
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// CHECK:STDOUT: %return.patt: %ptr.3bc = return_slot_pattern
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// CHECK:STDOUT: %return.param_patt: %ptr.3bc = out_param_pattern %return.patt, runtime_param1
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// CHECK:STDOUT: } {
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// CHECK:STDOUT: %int_32.loc16_38: Core.IntLiteral = int_value 32 [concrete = constants.%int_32]
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// CHECK:STDOUT: %i32.loc16_38: type = class_type @Int, @Int(constants.%int_32) [concrete = constants.%i32]
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// CHECK:STDOUT: %const.loc16_32: type = const_type %i32 [concrete = constants.%const]
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// CHECK:STDOUT: %const.loc16_25: type = const_type %const [concrete = constants.%const]
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// CHECK:STDOUT: %ptr.loc16_42: type = ptr_type %const [concrete = constants.%ptr.36b]
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// CHECK:STDOUT: %ptr.loc16_43: type = ptr_type %ptr.36b [concrete = constants.%ptr.3bc]
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// CHECK:STDOUT: %p.param: %ptr.3bc = value_param runtime_param0
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// CHECK:STDOUT: %.loc16: type = splice_block %ptr.loc16_19 [concrete = constants.%ptr.3bc] {
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// CHECK:STDOUT: %int_32.loc16_15: Core.IntLiteral = int_value 32 [concrete = constants.%int_32]
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// CHECK:STDOUT: %i32.loc16_15: type = class_type @Int, @Int(constants.%int_32) [concrete = constants.%i32]
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// CHECK:STDOUT: %const.loc16_9: type = const_type %i32 [concrete = constants.%const]
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// CHECK:STDOUT: %ptr.loc16_18: type = ptr_type %const [concrete = constants.%ptr.36b]
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// CHECK:STDOUT: %ptr.loc16_19: type = ptr_type %ptr.36b [concrete = constants.%ptr.3bc]
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %p: %ptr.3bc = bind_name p, %p.param
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// CHECK:STDOUT: %return.param: ref %ptr.3bc = out_param runtime_param1
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// CHECK:STDOUT: %return: ref %ptr.3bc = 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(%p.param_patt: %ptr.3bc) -> %ptr.3bc {
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// CHECK:STDOUT: !entry:
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// CHECK:STDOUT: %p.ref: %ptr.3bc = name_ref p, %p
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// CHECK:STDOUT: return %p.ref
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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