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bors 6b6a867ae9 Auto merge of #133474 - RalfJung:gvn-miscompile, r=compiler-errors 
Do not unify dereferences of shared borrows in GVN

Repost of https://github.com/rust-lang/rust/pull/132461, the last commit applies my suggestions.

Fixes https://github.com/rust-lang/rust/issues/130853
2024-11-27 15:43:56 +00:00
..
attr
coverage: Include the highest counter ID seen in .cov-map dumps
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auxiliary
coverage: Regression test for inlining into an uninstrumented crate
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branch
coverage: Restrict empty-span expansion to only cover { and }
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condition
coverage: Include the highest counter ID seen in .cov-map dumps
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mcdc
coverage: Restrict empty-span expansion to only cover { and }
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abort.cov-map
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abort.coverage
coverage: Restrict empty-span expansion to only cover { and }
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abort.rs
Remove c_unwind from tests and fix tests
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assert_not.cov-map
coverage: Include the highest counter ID seen in .cov-map dumps
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assert_not.coverage
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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assert_not.rs
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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assert-ne.cov-map
coverage: Include the highest counter ID seen in .cov-map dumps
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assert-ne.coverage
coverage: Add tests/coverage/assert-ne.rs
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assert-ne.rs
coverage: Add tests/coverage/assert-ne.rs
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assert.cov-map
coverage: Restrict empty-span expansion to only cover { and }
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assert.coverage
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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assert.rs
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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async2.cov-map
coverage: Restrict empty-span expansion to only cover { and }
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async2.coverage
coverage: Restrict empty-span expansion to only cover { and }
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async2.rs
coverage: Extract executor::block_on from several async coverage tests
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async_block.cov-map
coverage: Include the highest counter ID seen in .cov-map dumps
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async_block.coverage
coverage: Extract executor::block_on from several async coverage tests
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async_block.rs
coverage: Extract executor::block_on from several async coverage tests
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async_closure.cov-map
Dont ICE when computing coverage of synthetic async closure body
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async_closure.coverage
Dont ICE when computing coverage of synthetic async closure body
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async_closure.rs
Dont ICE when computing coverage of synthetic async closure body
2024-10-18 20:14:02 +11:00
async.cov-map
coverage: Include the highest counter ID seen in .cov-map dumps
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async.coverage
coverage: Extract executor::block_on from several async coverage tests
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async.rs
coverage: Extract executor::block_on from several async coverage tests
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await_ready.cov-map
coverage: Include the highest counter ID seen in .cov-map dumps
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await_ready.coverage
coverage: Extract executor::block_on from several async coverage tests
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await_ready.rs
coverage: Extract executor::block_on from several async coverage tests
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bad_counter_ids.cov-map
coverage: Include the highest counter ID seen in .cov-map dumps
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bad_counter_ids.coverage
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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bad_counter_ids.rs
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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bench.cov-map
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bench.coverage
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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bench.rs
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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closure_bug.cov-map
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closure_bug.coverage
coverage: Restrict empty-span expansion to only cover { and }
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closure_bug.rs
coverage: Add #[rustfmt::skip] to tests with non-standard formatting
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closure_macro_async.cov-map
coverage: Include the highest counter ID seen in .cov-map dumps
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closure_macro_async.coverage
coverage: Extract executor::block_on from several async coverage tests
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closure_macro_async.rs
coverage: Extract executor::block_on from several async coverage tests
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closure_macro.cov-map
coverage: Include the highest counter ID seen in .cov-map dumps
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closure_macro.coverage
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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closure_macro.rs
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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closure_unit_return.cov-map
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closure_unit_return.coverage
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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closure_unit_return.rs
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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closure.cov-map
comment out the old tests instead of adjusting them
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closure.coverage
coverage: Restrict empty-span expansion to only cover { and }
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closure.rs
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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color.coverage
Simplify the directives for ignoring coverage-test modes
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color.rs
Simplify the directives for ignoring coverage-test modes
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conditions.cov-map
coverage: Restrict empty-span expansion to only cover { and }
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conditions.coverage
coverage: Restrict empty-span expansion to only cover { and }
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conditions.rs
coverage: Tweak individual tests to be unaffected by rustfmt
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continue.cov-map
coverage: Include the highest counter ID seen in .cov-map dumps
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continue.coverage
coverage: Migrate tests/run-coverage into tests/coverage
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continue.rs
coverage: Migrate tests/run-coverage into tests/coverage
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coroutine.cov-map
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coroutine.coverage
Manually run x fmt on all source files in tests/coverage/
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coroutine.rs
Manually run x fmt on all source files in tests/coverage/
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coverage_attr_closure.cov-map
coverage: Include the highest counter ID seen in .cov-map dumps
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coverage_attr_closure.coverage
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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coverage_attr_closure.rs
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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dead_code.cov-map
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dead_code.coverage
coverage: Restrict empty-span expansion to only cover { and }
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dead_code.rs
coverage: Migrate tests/run-coverage into tests/coverage
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drop_trait.cov-map
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drop_trait.coverage
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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drop_trait.rs
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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fn_sig_into_try.cov-map
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fn_sig_into_try.coverage
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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fn_sig_into_try.rs
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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generics.cov-map
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generics.coverage
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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generics.rs
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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holes.cov-map
coverage: Include the highest counter ID seen in .cov-map dumps
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holes.coverage
coverage: Extract hole spans from HIR instead of MIR
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holes.rs
coverage: Test for handling of nested item spans
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if_else.cov-map
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if_else.coverage
coverage: Add #[rustfmt::skip] to tests with non-standard formatting
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if_else.rs
coverage: Add #[rustfmt::skip] to tests with non-standard formatting
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if_not.cov-map
coverage: Restrict empty-span expansion to only cover { and }
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if_not.coverage
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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if_not.rs
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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if.cov-map
coverage: Restrict empty-span expansion to only cover { and }
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if.coverage
coverage: Restrict empty-span expansion to only cover { and }
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if.rs
coverage: Add #[rustfmt::skip] to tests with non-standard formatting
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ignore_map.coverage
Simplify the directives for ignoring coverage-test modes
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ignore_map.rs
Simplify the directives for ignoring coverage-test modes
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ignore_run.cov-map
coverage: Include the highest counter ID seen in .cov-map dumps
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ignore_run.rs
Simplify the directives for ignoring coverage-test modes
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inline_mixed.rs
coverage: Regression test for inlining into an uninstrumented crate
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inline-dead.cov-map
coverage: Include the highest counter ID seen in .cov-map dumps
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inline-dead.coverage
Tweak various coverage test files for slightly nicer formatting
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inline-dead.rs
Tweak various coverage test files for slightly nicer formatting
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inline.cov-map
coverage: Include the highest counter ID seen in .cov-map dumps
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inline.coverage
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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inline.rs
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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inner_items.cov-map
coverage: Restrict empty-span expansion to only cover { and }
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inner_items.coverage
coverage: Restrict empty-span expansion to only cover { and }
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inner_items.rs
Tweak various coverage test files for slightly nicer formatting
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issue-83601.cov-map
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issue-83601.coverage
coverage: Don't instrument #[automatically_derived] functions
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issue-83601.rs
coverage: Migrate tests/run-coverage into tests/coverage
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issue-84561.cov-map
comment out the old tests instead of adjusting them
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issue-84561.coverage
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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issue-84561.rs
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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issue-85461.cov-map
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issue-85461.coverage
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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issue-85461.rs
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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issue-93054.cov-map
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issue-93054.coverage
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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issue-93054.rs
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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lazy_boolean.cov-map
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lazy_boolean.coverage
coverage: Restrict empty-span expansion to only cover { and }
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lazy_boolean.rs
coverage: Add #[rustfmt::skip] to tests with non-standard formatting
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let_else_loop.cov-map
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let_else_loop.coverage
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let_else_loop.rs
Manually run x fmt on all source files in tests/coverage/
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long_and_wide.cov-map
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long_and_wide.coverage
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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long_and_wide.rs
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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loop_break_value.cov-map
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loop_break_value.coverage
coverage: Add #[rustfmt::skip] to tests with non-standard formatting
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loop_break_value.rs
coverage: Add #[rustfmt::skip] to tests with non-standard formatting
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loop-break.cov-map
coverage: Restrict empty-span expansion to only cover { and }
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loop-break.coverage
coverage: Replace the old span refiner with a single function
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loop-break.rs
coverage: Add tests/coverage/loop-break.rs
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loops_branches.cov-map
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loops_branches.coverage
coverage: Migrate tests/run-coverage into tests/coverage
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loops_branches.rs
coverage: Migrate tests/run-coverage into tests/coverage
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macro_in_closure.cov-map
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macro_in_closure.coverage
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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macro_in_closure.rs
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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macro_name_span.cov-map
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macro_name_span.coverage
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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macro_name_span.rs
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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match_or_pattern.cov-map
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match_or_pattern.coverage
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match_or_pattern.rs
coverage: Migrate tests/run-coverage into tests/coverage
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nested_loops.cov-map
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nested_loops.coverage
coverage: Migrate tests/run-coverage into tests/coverage
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nested_loops.rs
coverage: Migrate tests/run-coverage into tests/coverage
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no_cov_crate.cov-map
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no_cov_crate.coverage
coverage: Extract hole spans from HIR instead of MIR
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no_cov_crate.rs
coverage: Migrate tests/run-coverage into tests/coverage
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no_spans_if_not.cov-map
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no_spans_if_not.coverage
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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no_spans_if_not.rs
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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no_spans.cov-map
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no_spans.coverage
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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no_spans.rs
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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no-core.cov-map
Coverage test for allowing coverage in a #![no_core] crate
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no-core.coverage
Coverage test for allowing coverage in a #![no_core] crate
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no-core.rs
Coverage test for allowing coverage in a #![no_core] crate
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overflow.cov-map
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overflow.coverage
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overflow.rs
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panic_unwind.cov-map
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panic_unwind.coverage
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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panic_unwind.rs
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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partial_eq.cov-map
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partial_eq.coverage
Manually run x fmt on all source files in tests/coverage/
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partial_eq.rs
Manually run x fmt on all source files in tests/coverage/
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README.md
coverage: Rename the run-coverage test mode to coverage-run
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simple_loop.cov-map
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simple_loop.coverage
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simple_loop.rs
coverage: Add #[rustfmt::skip] to tests with non-standard formatting
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simple_match.cov-map
coverage: Restrict empty-span expansion to only cover { and }
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simple_match.coverage
coverage: Restrict empty-span expansion to only cover { and }
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simple_match.rs
coverage: Add #[rustfmt::skip] to tests with non-standard formatting
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sort_groups.cov-map
coverage: Restrict empty-span expansion to only cover { and }
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sort_groups.coverage
coverage: Restrict empty-span expansion to only cover { and }
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sort_groups.rs
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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test_harness.cov-map
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test_harness.coverage
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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test_harness.rs
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
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tight_inf_loop.cov-map
coverage: Include the highest counter ID seen in .cov-map dumps
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tight_inf_loop.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
tight_inf_loop.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
trivial.cov-map
coverage: Include the highest counter ID seen in .cov-map dumps
2024-10-11 21:04:37 +11:00
trivial.coverage
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
2024-02-22 16:04:04 +00:00
trivial.rs
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
2024-02-22 16:04:04 +00:00
try_error_result.cov-map
coverage: Include the highest counter ID seen in .cov-map dumps
2024-10-11 21:04:37 +11:00
try_error_result.coverage
Tweak various coverage test files for slightly nicer formatting
2024-05-29 14:34:11 +10:00
try_error_result.rs
Tweak various coverage test files for slightly nicer formatting
2024-05-29 14:34:11 +10:00
unicode.cov-map
coverage: Restrict empty-span expansion to only cover { and }
2024-11-08 20:43:08 +11:00
unicode.coverage
coverage: Restrict empty-span expansion to only cover { and }
2024-11-08 20:43:08 +11:00
unicode.rs
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
2024-02-22 16:04:04 +00:00
unreachable.cov-map
coverage: Include the highest counter ID seen in .cov-map dumps
2024-10-11 21:04:37 +11:00
unreachable.coverage
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
2024-02-22 16:04:04 +00:00
unreachable.rs
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
2024-02-22 16:04:04 +00:00
unused_mod.cov-map
coverage: Include the highest counter ID seen in .cov-map dumps
2024-10-11 21:04:37 +11:00
unused_mod.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
unused_mod.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
unused.cov-map
coverage: Restrict empty-span expansion to only cover { and }
2024-11-08 20:43:08 +11:00
unused.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
unused.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
uses_crate.cov-map
coverage: Include the highest counter ID seen in .cov-map dumps
2024-10-11 21:04:37 +11:00
uses_crate.coverage
coverage: Restrict empty-span expansion to only cover { and }
2024-11-08 20:43:08 +11:00
uses_crate.rs
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
2024-02-22 16:04:04 +00:00
uses_inline_crate.cov-map
coverage: Restrict empty-span expansion to only cover { and }
2024-11-08 20:43:08 +11:00
uses_inline_crate.coverage
coverage: Restrict empty-span expansion to only cover { and }
2024-11-08 20:43:08 +11:00
uses_inline_crate.rs
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
2024-02-22 16:04:04 +00:00
while_early_ret.cov-map
coverage: Include the highest counter ID seen in .cov-map dumps
2024-10-11 21:04:37 +11:00
while_early_ret.coverage
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
2024-02-22 16:04:04 +00:00
while_early_ret.rs
[AUTO_GENERATED] Migrate compiletest to use ui_test-style //@ directives
2024-02-22 16:04:04 +00:00
while.cov-map
coverage: Include the highest counter ID seen in .cov-map dumps
2024-10-11 21:04:37 +11:00
while.coverage
coverage: Tweak individual tests to be unaffected by rustfmt
2024-01-16 16:14:27 +11:00
while.rs
coverage: Tweak individual tests to be unaffected by rustfmt
2024-01-16 16:14:27 +11:00
yield.cov-map
coverage: Include the highest counter ID seen in .cov-map dumps
2024-10-11 21:04:37 +11:00
yield.coverage
Manually run x fmt on all source files in tests/coverage/
2024-05-29 14:34:17 +10:00
yield.rs
Manually run x fmt on all source files in tests/coverage/
2024-05-29 14:34:17 +10:00

README.md

The tests in this directory are shared by two different test modes, and can be run in multiple different ways:

  • ./x.py test coverage-map (compiles to LLVM IR and checks coverage mappings)
  • ./x.py test coverage-run (runs a test binary and checks its coverage report)
  • ./x.py test coverage (runs both coverage-map and coverage-run)

Maintenance note

These tests can be sensitive to small changes in MIR spans or MIR control flow, especially in HIR-to-MIR lowering or MIR optimizations.

If you haven't touched the coverage code directly, and the tests still pass in coverage-run mode, then it should usually be OK to just re-bless the mappings as necessary with ./x.py test coverage-map --bless, without worrying too much about the exact changes.

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