Add tests for coverage mapping generation.

This patch adds the tests for the coverage mapping generation. 
Most of the tests check the mapping regions produced by 
the generator, and one checks the llvm IR.

Differential Revision: http://reviews.llvm.org/D4847

llvm-svn: 215995

1 files changed, 37 insertions, 0 deletions

diff --git a/clang/test/CoverageMapping/preprocessor.c b/clang/test/CoverageMapping/preprocessor.c
new file mode 100644
index 00000000000..a6edeb7c824
--- /dev/null
+++ b/clang/test/CoverageMapping/preprocessor.c
@@ -0,0 +1,37 @@
+// RUN: %clang_cc1 -fprofile-instr-generate -fcoverage-mapping -dump-coverage-mapping -emit-llvm-only -main-file-name preprocessor.c %s | FileCheck %s
+
+                 // CHECK: func
+void func() {    // CHECK: File 0, [[@LINE]]:13 -> [[@LINE+5]]:2 = #0 (HasCodeBefore = 0)
+  int i = 0;
+#ifdef MACRO     // CHECK-NEXT: Skipped,File 0, [[@LINE]]:2 -> [[@LINE+2]]:2 = 0 (HasCodeBefore = 0)
+  int x = i;
+#endif
+}
+
+#if 0
+  int g = 0;
+
+  void bar() { }
+#endif
+
+                 // CHECK: main
+int main() {     // CHECK-NEXT: File 0, [[@LINE]]:12 -> [[@LINE+19]]:2 = #0 (HasCodeBefore = 0)
+  int i = 0;
+#if 0            // CHECK-NEXT: Skipped,File 0, [[@LINE]]:2 -> [[@LINE+4]]:2 = 0 (HasCodeBefore = 0)
+  if(i == 0) {
+    i = 1;
+  }
+#endif
+
+#if 1
+  if(i == 0) {   // CHECK-NEXT: File 0, [[@LINE]]:14 -> [[@LINE+2]]:4 = #1 (HasCodeBefore = 0)
+    i = 1;
+  }
+#else            // CHECK-NEXT: Skipped,File 0, [[@LINE]]:2 -> [[@LINE+5]]:2 = 0 (HasCodeBefore = 0)
+  if(i == 1) {
+    i = 0;
+  }
+}
+#endif
+  return 0;
+}