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072ef25de8
In order for recent gcov versions to read the coverage data, you have to use UseCfgChecksum=true and FunctionNamesInData=false options for coverage profiling pass. This is because gcov is expecting the function section in .gcda to be exactly 3 words in size, containing ident and two checksums. While llvm-cov is compatible with UseCfgChecksum=true, it always expects a function name in .gcda function sections (it's not compatible with FunctionNamesInData=false). Thus it's currently impossible to generate one set of coverage files that works with both gcov and llvm-cov. This change fixes the reading of coverage information to only read the function name if it's present. Patch by Arseny Kapoulkine. Thanks! llvm-svn: 260162
31 lines
1.1 KiB
C++
31 lines
1.1 KiB
C++
// Make sure that llvm-cov can read coverage data written in gcov47+ compatible
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// format.
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// Compile with these arguments and run the result to generate .gc* files:
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// -coverage -Xclang -coverage-no-function-names-in-data
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// -Xclang -coverage-cfg-checksum -Xclang -coverage-version='407*'
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// We need shell for cd
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// REQUIRES: shell
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// RUN: rm -rf %t
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// RUN: mkdir %t
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// RUN: cd %t
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// RUN: cp %s %p/Inputs/gcov47_compatibility.gc* .
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// RUN: llvm-cov gcov gcov47_compatibility.cpp | FileCheck %s --check-prefix=STDOUT
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// STDOUT: File 'gcov47_compatibility.cpp'
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// STDOUT: Lines executed:100.00% of 1
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// STDOUT: gcov47_compatibility.cpp:creating 'gcov47_compatibility.cpp.gcov'
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// RUN: FileCheck %s --check-prefix=GCOV < %t/gcov47_compatibility.cpp.gcov
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// GCOV: -: 0:Runs:1
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// GCOV: -: 0:Programs:1
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int main(int argc, const char *argv[]) { // GCOV: -: [[@LINE]]:int main(
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return 0; // GCOV: 1: [[@LINE]]: return
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} // GCOV: -: [[@LINE]]:}
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// llvm-cov doesn't work on big endian yet
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// XFAIL: powerpc64-, s390x, mips-, mips64-, sparc
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