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cc465937a2
Previously, if all the coverage counters for a given SIL function were optimized out, we would have dropped the coverage map on the floor, leading to inaccurate coverage reports in `-O`. However LLVM allows us to emit the name data for the coverage maps separately by defining an `__llvm_coverage_names` global with the name data, which is picked up by its instrumentation lowering pass. Use this to continue to emit coverage maps for functions that do not get emitted. rdar://99813754
34 lines
1.0 KiB
Swift
34 lines
1.0 KiB
Swift
// RUN: %empty-directory(%t)
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// RUN: %target-build-swift %s -profile-generate -profile-coverage-mapping -O -o %t/main
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// This unusual use of 'sh' allows the path of the profraw file to be
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// substituted by %target-run.
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// RUN: %target-codesign %t/main
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// RUN: %target-run sh -c 'env LLVM_PROFILE_FILE=$1 $2' -- %t/default.profraw %t/main
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// RUN: %llvm-profdata merge %t/default.profraw -o %t/default.profdata
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// RUN: %llvm-cov export -summary-only %t/main -instr-profile=%t/default.profdata | %FileCheck %s
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// REQUIRES: profile_runtime
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// REQUIRES: executable_test
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// REQUIRES: OS=macosx
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// CHECK: "lines":{"count":9,"covered":6{{.*}}"functions":{"count":5,"covered":3
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// The functions 'unused' and 'optimizedOut' will be optimized out, but
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// make sure we still emit coverage records for them, using name data emitted
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// separately in @__llvm_coverage_names.
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func unused() {}
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func optimizedOut() -> Int { .random() ? 1 : 2 }
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func bar() -> Bool { false }
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func baz() {
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if bar() {
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_ = optimizedOut()
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}
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}
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baz()
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