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llvm-cov: Ignore missing .gcda files

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When gcov is run without gcda data, it acts as if the counts are all
zero and labels the file as - to indicate that there was no data. We
should do the same.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200740 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Justin Bogner 2014-02-04 06:41:39 +00:00
parent f7d0d0798e
commit 9433c770f7
5 changed files with 112 additions and 7 deletions
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79
test/tools/llvm-cov/Inputs/test_no_gcda.cpp.gcov Normal file
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@ -0,0 +1,79 @@
-: 0:Source:test.cpp
-: 0:Graph:test.gcno
-: 0:Data:-
-: 0:Runs:0
-: 0:Programs:0
-: 1:#include "test.h"
-: 2:#include <cstdlib>
-: 3:
-: 4:bool on = false;
-: 5:int len = 42;
-: 6:double grid[10][10] = {0};
-: 7:const char * hello = "world";
-: 8:const char * world = "hello";
-: 9:
#####: 10:void A::B() {}
-: 11:
#####: 12:void useless() {}
-: 13:
-: 14:double more_useless() {
#####: 15: return 0;
-: 16:}
-: 17:
-: 18:int foo() {
#####: 19: on = true;
#####: 20: return 3;
-: 21:}
-: 22:
-: 23:int bar() {
#####: 24: len--;
#####: 25: return foo() + 45;
-: 26:}
-: 27:
#####: 28:void assign(int ii, int jj) {
#####: 29: grid[ii][jj] = (ii+1) * (jj+1);
#####: 30:}
-: 31:
-: 32:void initialize_grid() {
#####: 33: for (int ii = 0; ii < 2; ii++)
#####: 34: for (int jj = 0; jj < 2; jj++)
#####: 35: assign(ii, jj);
#####: 36:}
-: 37:
-: 38:int main() {
#####: 39: initialize_grid();
-: 40:
#####: 41: int a = 2;
#####: 42: on = rand() % 2;
#####: 43: if (on) {
#####: 44: foo();
#####: 45: ++a;
#####: 46: } else {
#####: 47: bar();
#####: 48: a += rand();
-: 49: }
-: 50:
#####: 51: for (int ii = 0; ii < 10; ++ii) {
#####: 52: switch (rand() % 5) {
-: 53: case 0:
#####: 54: a += rand();
#####: 55: break;
-: 56: case 1:
-: 57: case 2:
#####: 58: a += rand() / rand();
#####: 59: break;
-: 60: case 3:
#####: 61: a -= rand();
#####: 62: break;
-: 63: default:
#####: 64: a = -1;
#####: 65: }
#####: 66: }
-: 67:
#####: 68: A thing;
#####: 69: for (uint64_t ii = 0; ii < 4294967296; ++ii)
#####: 70: thing.B();
-: 71:
#####: 72: return a + 8 + grid[2][3] + len;
-: 73: return more_useless();
-: 74:}

8
test/tools/llvm-cov/Inputs/test_no_gcda.h.gcov Normal file
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@ -0,0 +1,8 @@
-: 0:Source:./test.h
-: 0:Graph:test.gcno
-: 0:Data:-
-: 0:Runs:0
-: 0:Programs:0
#####: 1:struct A {
-: 2: virtual void B();
-: 3:};

8
test/tools/llvm-cov/Inputs/test_no_gcda.output Normal file
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@ -0,0 +1,8 @@
File 'test.cpp'
Lines executed:0.00% of 38
test.cpp:creating 'test.cpp.gcov'
File './test.h'
Lines executed:0.00% of 1
./test.h:creating './test.h.gcov'

5
test/tools/llvm-cov/llvm-cov.test
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@ -48,6 +48,11 @@ RUN: llvm-cov test.c -a -b -c -u | diff -u test_-b.output -
RUN: diff -aub test_-a_-b_-c_-u.cpp.gcov test.cpp.gcov
RUN: diff -aub test_-a_-b_-c_-u.h.gcov test.h.gcov
# Missing gcda file just gives 0 counts.
RUN: llvm-cov test.c -gcda=no_such_gcda_file | diff -u test_no_gcda.output -
RUN: diff -aub test_no_gcda.cpp.gcov test.cpp.gcov
RUN: diff -aub test_no_gcda.h.gcov test.h.gcov
# Invalid gcno file.
RUN: not llvm-cov test.c -gcno=test_read_fail.gcno

19
tools/llvm-cov/llvm-cov.cpp
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@ -84,13 +84,18 @@ int main(int argc, char **argv) {
OwningPtr<MemoryBuffer> GCDA_Buff;
if (error_code ec = MemoryBuffer::getFileOrSTDIN(InputGCDA, GCDA_Buff)) {
errs() << InputGCDA << ": " << ec.message() << "\n";
return 1;
}
GCOVBuffer GCDA_GB(GCDA_Buff.get());
if (!GF.readGCDA(GCDA_GB)) {
errs() << "Invalid .gcda File!\n";
return 1;
if (ec != errc::no_such_file_or_directory) {
errs() << InputGCDA << ": " << ec.message() << "\n";
return 1;
}
// Clear the filename to make it clear we didn't read anything.
InputGCDA = "-";
} else {
GCOVBuffer GCDA_GB(GCDA_Buff.get());
if (!GF.readGCDA(GCDA_GB)) {
errs() << "Invalid .gcda File!\n";
return 1;
}
}
if (DumpGCOV)