mirror of
https://github.com/carbon-language/carbon-lang.git
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Richard Smith
583f5aa508
These can't be supported by `TryEvalInst`, because we don't track sufficient information about predecessors and branch conditions in SemIR to efficiently compute the constant result. Even if we could do so, we may not want to treat all `BlockArg`s for which we can infer a constant value as being constants. Instead, set the constant value explicitly after creating the corresponding `BlockArg` instruction.
62 lines
3.0 KiB
Plaintext
62 lines
3.0 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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// CHECK:STDERR: fail_not_in_function.carbon:[[@LINE+12]]:14: ERROR: Semantics TODO: `Control flow expressions are currently only supported inside functions.`.
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// CHECK:STDERR: let x: i32 = if true then 1 else 0;
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// CHECK:STDERR: ^~~~~~~
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// CHECK:STDERR:
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// CHECK:STDERR: fail_not_in_function.carbon:[[@LINE+8]]:14: ERROR: Semantics TODO: `Control flow expressions are currently only supported inside functions.`.
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// CHECK:STDERR: let x: i32 = if true then 1 else 0;
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// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~
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// CHECK:STDERR:
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// CHECK:STDERR: fail_not_in_function.carbon:[[@LINE+4]]:22: ERROR: Semantics TODO: `Control flow expressions are currently only supported inside functions.`.
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// CHECK:STDERR: let x: i32 = if true then 1 else 0;
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// CHECK:STDERR: ^~~~~~
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// CHECK:STDERR:
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let x: i32 = if true then 1 else 0;
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class C {
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// CHECK:STDERR: fail_not_in_function.carbon:[[@LINE+11]]:10: ERROR: Semantics TODO: `Control flow expressions are currently only supported inside functions.`.
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// CHECK:STDERR: var n: if true then i32 else f64;
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// CHECK:STDERR: ^~~~~~~
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// CHECK:STDERR:
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// CHECK:STDERR: fail_not_in_function.carbon:[[@LINE+7]]:10: ERROR: Semantics TODO: `Control flow expressions are currently only supported inside functions.`.
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// CHECK:STDERR: var n: if true then i32 else f64;
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// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~
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// CHECK:STDERR:
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// CHECK:STDERR: fail_not_in_function.carbon:[[@LINE+3]]:18: ERROR: Semantics TODO: `Control flow expressions are currently only supported inside functions.`.
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// CHECK:STDERR: var n: if true then i32 else f64;
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// CHECK:STDERR: ^~~~~~~~
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var n: if true then i32 else f64;
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}
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// CHECK:STDOUT: --- fail_not_in_function.carbon
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// CHECK:STDOUT:
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// CHECK:STDOUT: constants {
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// CHECK:STDOUT: %.1: bool = bool_literal true [template]
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// CHECK:STDOUT: %.2: i32 = int_literal 1 [template]
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// CHECK:STDOUT: %.3: i32 = int_literal 0 [template]
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// CHECK:STDOUT: %C: type = class_type @C [template]
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// CHECK:STDOUT: %.4: type = unbound_element_type C, i32 [template]
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// CHECK:STDOUT: %.5: type = struct_type {.n: i32} [template]
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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: %.loc19: i32 = block_arg <unexpected instblockref block6> [template = constants.%.2]
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// CHECK:STDOUT: %x: i32 = bind_name x, %.loc19
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// CHECK:STDOUT: %C.decl: type = class_decl @C [template = constants.%C] {}
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: class @C {
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// CHECK:STDOUT: %.loc33: bool = bool_literal true [template = constants.%.1]
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// CHECK:STDOUT: if %.loc33 br !if.expr.then else br !if.expr.else
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// CHECK:STDOUT:
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// CHECK:STDOUT: !members:
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// CHECK:STDOUT: .Self = constants.%C
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// CHECK:STDOUT: .n = <unexpected instref inst+22>
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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