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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.
32 lines
1.4 KiB
Plaintext
32 lines
1.4 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_control_flow.carbon:[[@LINE+11]]:11: ERROR: Semantics TODO: `Control flow expressions are currently only supported inside functions.`.
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// CHECK:STDERR: alias a = true or false;
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// CHECK:STDERR: ^~~~~~~
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// CHECK:STDERR:
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// CHECK:STDERR: fail_control_flow.carbon:[[@LINE+7]]:11: ERROR: Semantics TODO: `Control flow expressions are currently only supported inside functions.`.
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// CHECK:STDERR: alias a = true or false;
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// CHECK:STDERR: ^~~~~~~~~~~~~
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// CHECK:STDERR:
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// CHECK:STDERR: fail_control_flow.carbon:[[@LINE+3]]:11: ERROR: Alias initializer must be a name reference.
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// CHECK:STDERR: alias a = true or false;
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// CHECK:STDERR: ^~~~~~~~~~~~~
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alias a = true or false;
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// CHECK:STDOUT: --- fail_control_flow.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: bool = bool_literal false [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: %.loc18: bool = block_arg <unexpected instblockref block4> [template = constants.%.1]
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// CHECK:STDOUT: %a: <error> = bind_alias a, <error> [template = <error>]
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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