Revert "Added basic unit test for llvm-cov."

This reverts commit r194451.

Not sure why the tests are failing on the buildbot. They run fine on my
local machine. Could it possibly be because of the endianness of the
architectures? The GCNO and GCDA files are little-endian encoded, and
llvm-cov expects it to remain that way. Is this a safe assumption?

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194454 91177308-0d34-0410-b5e6-96231b3b80d8

test/tools/llvm-cov/Inputs/README

@@ -1,7 +0,0 @@
-These inputs were pre-generated to allow for easier testing of llvm-cov.
-
-test.gcno and test.gcda were create by running the latest version of clang:
-  clang++ -g -ftest-coverage -fprofile-arcs test.cpp
-
-test.cpp.gcov was created by running gcov 4.2.1:
-  gcov test.cpp

test/tools/llvm-cov/Inputs/test.cpp

@@ -1,77 +0,0 @@
-#include <cstdlib>
-
-bool on = false;
-int len = 42;
-double grid[10][10] = {0};
-const char * hello = "world";
-const char * world = "hello";
-
-struct A {
-  virtual void B();
-};
-
-void A::B() {}
-
-void useless() {}
-
-double more_useless() {
-  return 0;
-}
-
-int foo() {
-  on = true;
-  return 3;
-}
-
-int bar() {
-  len--;
-  return foo() + 45;
-}
-
-void assign(int ii, int jj) {
-  grid[ii][jj] = (ii+1) * (jj+1);
-}
-
-void initialize_grid() {
-  for (int ii = 0; ii < 2; ii++)
-    for (int jj = 0; jj < 2; jj++)
-      assign(ii, jj);
-}
-
-int main() {
-  initialize_grid();
-
-  int a = 2;
-  on = rand() % 2;
-  if (on) {
-    foo();
-    ++a;
-  } else {
-    bar();
-    a += rand();
-  }
-
-  for (int ii = 0; ii < 10; ++ii) {
-    switch (rand() % 5) {
-      case 0:
-        a += rand();
-        break;
-      case 1:
-      case 2:
-        a += rand() / rand();
-        break;
-      case 3:
-        a -= rand();
-        break;
-      default:
-        a = -1;
-    }
-  }
-
-  A thing;
-  for (uint64_t ii = 0; ii < 4294967296; ++ii)
-    thing.B();
-
-  return a + 8 + grid[2][3] + len;
-  return more_useless();
-}

test/tools/llvm-cov/Inputs/test.cpp.gcov

@@ -1,82 +0,0 @@
-        -:    0:Source:test.cpp
-        -:    0:Graph:test.gcno
-        -:    0:Data:test.gcda
-        -:    0:Runs:2
-        -:    0:Programs:1
-        -:    1:#include <cstdlib>
-        -:    2:
-        -:    3:bool on = false;
-        -:    4:int len = 42;
-        -:    5:double grid[10][10] = {0};
-        -:    6:const char * hello = "world";
-        -:    7:const char * world = "hello";
-        -:    8:
-        4:    9:struct A {
-        -:   10:  virtual void B();
-        -:   11:};
-        -:   12:
-8589934592:   13:void A::B() {}
-        -:   14:
-    #####:   15:void useless() {}
-        -:   16:
-        -:   17:double more_useless() {
-    #####:   18:  return 0;
-        -:   19:}
-        -:   20:
-        -:   21:int foo() {
-        2:   22:  on = true;
-        2:   23:  return 3;
-        -:   24:}
-        -:   25:
-        -:   26:int bar() {
-    #####:   27:  len--;
-    #####:   28:  return foo() + 45;
-        -:   29:}
-        -:   30:
-        8:   31:void assign(int ii, int jj) {
-        8:   32:  grid[ii][jj] = (ii+1) * (jj+1);
-        8:   33:}
-        -:   34:
-        -:   35:void initialize_grid() {
-       12:   36:  for (int ii = 0; ii < 2; ii++)
-       24:   37:    for (int jj = 0; jj < 2; jj++)
-       12:   38:      assign(ii, jj);
-        2:   39:}
-        -:   40:
-        -:   41:int main() {
-        2:   42:  initialize_grid();
-        -:   43:
-        2:   44:  int a = 2;
-        2:   45:  on = rand() % 2;
-        2:   46:  if (on) {
-        2:   47:    foo();
-        2:   48:    ++a;
-        2:   49:  } else {
-    #####:   50:    bar();
-    #####:   51:    a += rand();
-        -:   52:  }
-        -:   53:
-       44:   54:  for (int ii = 0; ii < 10; ++ii) {
-       20:   55:    switch (rand() % 5) {
-        -:   56:      case 0:
-        4:   57:        a += rand();
-        4:   58:        break;
-        -:   59:      case 1:
-        -:   60:      case 2:
-        2:   61:        a += rand() / rand();
-        2:   62:        break;
-        -:   63:      case 3:
-        6:   64:        a -= rand();
-        6:   65:        break;
-        -:   66:      default:
-        8:   67:        a = -1;
-        8:   68:    }
-       20:   69:  }
-        -:   70:
-        2:   71:  A thing;
-17179869188:   72:  for (uint64_t ii = 0; ii < 4294967296; ++ii)
-8589934592:   73:    thing.B();
-        -:   74:
-        2:   75:  return a + 8 + grid[2][3] + len;
-        -:   76:  return more_useless();
-        -:   77:}

test/tools/llvm-cov/lit.local.cfg

@@ -1 +0,0 @@
-config.suffixes = ['.test']

test/tools/llvm-cov/llvm-cov.test

@@ -1,2 +0,0 @@
-RUN: cd %p/Inputs && llvm-cov -gcno=test.gcno -gcda=test.gcda \
-RUN:   | diff test.cpp.gcov -