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llvm-project/clang/test/CoverageMapping/system_macro.cpp

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[Coverage] Do not write out coverage mappings with zero entries After r275121, we stopped mapping regions from system headers. Lambdas declared in regions belonging to system headers started producing empty coverage mappings, since the files corresponding to their spelling locs were being ignored. The coverage reader doesn't know what to do with these empty mappings. This commit makes sure that we don't produce them and adds a test. I'll make the reader stricter in a follow-up commit. llvm-svn: 276716
2016-07-26 08:24:59 +08:00
// RUN: %clang_cc1 -std=c++11 -fprofile-instrument=clang -fcoverage-mapping -dump-coverage-mapping -emit-llvm-only -main-file-name system_macro.cpp -o - %s | FileCheck %s
InstrProf: Only disable coverage in built-in macros, not all system macros The issue I was trying to solve in r236547 was about built-in macros, but I disabled coverage in all system macros. This is actually a bit of overkill, and makes the display of coverage around system macros degrade unnecessarily. Instead, limit this to builtins specifically. llvm-svn: 237397
2015-05-15 06:14:10 +08:00
#ifdef IS_SYSHEADER
#pragma clang system_header
#define Func(x) if (x) {}
#define SomeType int
#else
#define IS_SYSHEADER
#include __FILE__
[Coverage] Do not write out coverage mappings with zero entries After r275121, we stopped mapping regions from system headers. Lambdas declared in regions belonging to system headers started producing empty coverage mappings, since the files corresponding to their spelling locs were being ignored. The coverage reader doesn't know what to do with these empty mappings. This commit makes sure that we don't produce them and adds a test. I'll make the reader stricter in a follow-up commit. llvm-svn: 276716
2016-07-26 08:24:59 +08:00
// CHECK-LABEL: doSomething
InstrProf: Only disable coverage in built-in macros, not all system macros The issue I was trying to solve in r236547 was about built-in macros, but I disabled coverage in all system macros. This is actually a bit of overkill, and makes the display of coverage around system macros degrade unnecessarily. Instead, limit this to builtins specifically. llvm-svn: 237397
2015-05-15 06:14:10 +08:00
void doSomething(int x) { // CHECK: File 0, [[@LINE]]:25 -> {{[0-9:]+}} = #0
[Coverage] Do not map regions from system headers Do not assign source regions located within system headers file ID's, and do not construct counter mapping regions out of them. This makes coverage reports less cluttered and less mysterious. E.g using the "assert" macro doesn't cause assert.h to appear in reports, and it no longer shows the "assertion failed" branch as an uncovered region. It also makes coverage mapping sections a bit smaller (e.g a 1% reduction in a stage2 build of bin/llvm-as). llvm-svn: 275121
2016-07-12 06:57:46 +08:00
Func(x);
InstrProf: Only disable coverage in built-in macros, not all system macros The issue I was trying to solve in r236547 was about built-in macros, but I disabled coverage in all system macros. This is actually a bit of overkill, and makes the display of coverage around system macros degrade unnecessarily. Instead, limit this to builtins specifically. llvm-svn: 237397
2015-05-15 06:14:10 +08:00
return;
SomeType *f; // CHECK: File 0, [[@LINE]]:11 -> {{[0-9:]+}} = 0
}
[Coverage] Do not write out coverage mappings with zero entries After r275121, we stopped mapping regions from system headers. Lambdas declared in regions belonging to system headers started producing empty coverage mappings, since the files corresponding to their spelling locs were being ignored. The coverage reader doesn't know what to do with these empty mappings. This commit makes sure that we don't produce them and adds a test. I'll make the reader stricter in a follow-up commit. llvm-svn: 276716
2016-07-26 08:24:59 +08:00
// CHECK-LABEL: main
int main() { // CHECK: File 0, [[@LINE]]:12 -> [[@LINE+2]]:2 = #0
Func([] { return true; }());
}
InstrProf: Only disable coverage in built-in macros, not all system macros The issue I was trying to solve in r236547 was about built-in macros, but I disabled coverage in all system macros. This is actually a bit of overkill, and makes the display of coverage around system macros degrade unnecessarily. Instead, limit this to builtins specifically. llvm-svn: 237397
2015-05-15 06:14:10 +08:00
#endif