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https://github.com/carbon-language/carbon-lang.git
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Jon Ross-Perkins
83413479d7
This has is a nice-to-have for me. Frequently I want to run a specific test, and end up digging through output to be able to copy-paste the run line. This uses TIP lines to inject the command into the file when using AUTOUPDATE. Note, one of the reasons I want this is because "bazel test //toolchain/testing:file_test --test_output=all" has been regularly exceeding bazel's output limit for me (workaround is either opening the output file or specifying an obscure output limit flag), making it a little harder for me to get the commands. However, frequently I'm adding a file and want to iterate on it, so that's really the use case I have in mind here.
73 lines
2.8 KiB
Plaintext
73 lines
2.8 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/lower/testdata/while/preheader.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/lower/testdata/while/preheader.carbon
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fn Cond() -> bool;
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fn F();
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fn G();
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// TODO: It would be better to preserve the loop preheader blocks from SemIR
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// into LLVM IR. If we don't, LLVM will recreate them for us as part of loop
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// canonicalization.
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fn While() {
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while (Cond()) {
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F();
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}
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if (Cond()) {
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while (Cond()) {
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G();
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}
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}
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}
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// CHECK:STDOUT: ; ModuleID = 'preheader.carbon'
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// CHECK:STDOUT: source_filename = "preheader.carbon"
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// CHECK:STDOUT:
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// CHECK:STDOUT: declare i1 @Cond()
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// CHECK:STDOUT:
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// CHECK:STDOUT: declare void @F()
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// CHECK:STDOUT:
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// CHECK:STDOUT: declare void @G()
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// CHECK:STDOUT:
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// CHECK:STDOUT: define void @While() {
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// CHECK:STDOUT: entry:
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// CHECK:STDOUT: br label %while.cond.loc20
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// CHECK:STDOUT:
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// CHECK:STDOUT: while.cond.loc20: ; preds = %entry, %while.body.loc20
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// CHECK:STDOUT: %Cond.call.loc20 = call i1 @Cond()
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// CHECK:STDOUT: br i1 %Cond.call.loc20, label %while.body.loc20, label %while.done.loc20
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// CHECK:STDOUT:
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// CHECK:STDOUT: while.body.loc20: ; preds = %while.cond.loc20
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// CHECK:STDOUT: call void @F()
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// CHECK:STDOUT: br label %while.cond.loc20
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// CHECK:STDOUT:
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// CHECK:STDOUT: while.done.loc20: ; preds = %while.cond.loc20
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// CHECK:STDOUT: %Cond.call.loc24 = call i1 @Cond()
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// CHECK:STDOUT: br i1 %Cond.call.loc24, label %while.cond.loc25, label %if.else
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// CHECK:STDOUT:
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// CHECK:STDOUT: while.cond.loc25: ; preds = %while.body.loc25, %while.done.loc20
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// CHECK:STDOUT: %Cond.call.loc25 = call i1 @Cond()
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// CHECK:STDOUT: br i1 %Cond.call.loc25, label %while.body.loc25, label %while.done.loc25
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// CHECK:STDOUT:
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// CHECK:STDOUT: while.body.loc25: ; preds = %while.cond.loc25
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// CHECK:STDOUT: call void @G()
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// CHECK:STDOUT: br label %while.cond.loc25
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// CHECK:STDOUT:
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// CHECK:STDOUT: while.done.loc25: ; preds = %while.cond.loc25
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// CHECK:STDOUT: br label %if.else
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// CHECK:STDOUT:
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// CHECK:STDOUT: if.else: ; preds = %while.done.loc25, %while.done.loc20
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// CHECK:STDOUT: ret void
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// CHECK:STDOUT:
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// CHECK:STDOUT: ; uselistorder directives
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// CHECK:STDOUT: uselistorder label %while.cond.loc20, { 1, 0 }
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// CHECK:STDOUT: }
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