mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-28 15:54:56 +01:00
Richard Smith
29c294880d
Rather than producing multiple constants with the same value, fold all instances of a given constant to the same constant instruction. A future PR will use this to replace the current type canonicalization system.
37 lines
1.5 KiB
Plaintext
37 lines
1.5 KiB
Plaintext
// 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
|
|
|
|
// TODO: The `const` in the return type should not be necessary.
|
|
fn F(p: const (const (const i32*)*)) -> const i32 {
|
|
return **p;
|
|
}
|
|
|
|
// CHECK:STDOUT: --- nested_const.carbon
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: constants {
|
|
// CHECK:STDOUT: %.1: type = const_type i32 [template]
|
|
// CHECK:STDOUT: %.2: type = ptr_type const i32 [template]
|
|
// CHECK:STDOUT: %.3: type = const_type const i32* [template]
|
|
// CHECK:STDOUT: %.4: type = ptr_type const (const i32*) [template]
|
|
// CHECK:STDOUT: %.5: type = const_type const (const i32*)* [template]
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: file {
|
|
// CHECK:STDOUT: package: <namespace> = namespace package, {.F = %F} [template]
|
|
// CHECK:STDOUT: %F: <function> = fn_decl @F [template]
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: fn @F(%p: const (const (const i32*)*)) -> const i32 {
|
|
// CHECK:STDOUT: !entry:
|
|
// CHECK:STDOUT: %p.ref: const (const (const i32*)*) = name_ref p, %p
|
|
// CHECK:STDOUT: %.loc9_11.1: ref const (const i32*) = deref %p.ref
|
|
// CHECK:STDOUT: %.loc9_11.2: const (const i32*) = bind_value %.loc9_11.1
|
|
// CHECK:STDOUT: %.loc9_10.1: ref const i32 = deref %.loc9_11.2
|
|
// CHECK:STDOUT: %.loc9_10.2: const i32 = bind_value %.loc9_10.1
|
|
// CHECK:STDOUT: return %.loc9_10.2
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT:
|