clang/test/CodeGen/code-coverage.c

   1 /// We support coverage versions 3.4, 4.7 and 4.8.
   2 /// 3.4 redesigns the format and changed .da to .gcda
   3 /// 4.7 enables cfg_checksum.
   4 /// 4.8 (default, compatible with gcov 7) emits the exit block the second.
   5 // RUN: %clang_cc1 -emit-llvm -disable-red-zone -fprofile-arcs -coverage-version='304*' %s -o - | \
   6 // RUN:   FileCheck --check-prefixes=CHECK,304 %s
   7 // RUN: %clang_cc1 -emit-llvm -disable-red-zone -fprofile-arcs -coverage-version='407*' %s -o - | \
   8 // RUN:   FileCheck --check-prefixes=CHECK,407 %s
   9 // RUN: %clang_cc1 -emit-llvm -disable-red-zone -fprofile-arcs %s -o - | \
  10 // RUN:   FileCheck --check-prefixes=CHECK,408 %s
  11
  12 // RUN: %clang_cc1 -emit-llvm -disable-red-zone -fprofile-arcs -coverage-notes-file=aaa.gcno -coverage-data-file=bbb.gcda -debug-info-kind=limited -dwarf-version=4 %s -o - | FileCheck %s --check-prefix GCOV_FILE_INFO
  13
  14 // RUN: %clang_cc1 -emit-llvm-bc -o /dev/null -fdebug-pass-manager -fprofile-arcs %s 2>&1 | FileCheck --check-prefix=NEWPM %s
  15 // RUN: %clang_cc1 -emit-llvm-bc -o /dev/null -fdebug-pass-manager -fprofile-arcs -O3 %s 2>&1 | FileCheck --check-prefix=NEWPM-O3 %s
  16
  17 // NEWPM-NOT: Running pass
  18 // NEWPM: Running pass: GCOVProfilerPass
  19
  20 // NEWPM-O3-NOT: Running pass
  21 // NEWPM-O3: Running pass: Annotation2MetadataPass
  22 // NEWPM-O3: Running pass: ForceFunctionAttrsPass
  23 // NEWPM-O3: Running pass: GCOVProfilerPass
  24
  25 int test1(int a) {
  26   switch (a % 2) {
  27   case 0:
  28     ++a;
  29   case 1:
  30     a /= 2;
  31   }
  32   return a;
  33 }
  34
  35 int test2(int b) {
  36   return b * 2;
  37 }
  38
  39
  40 // CHECK: @__llvm_internal_gcov_emit_function_args.0 = internal unnamed_addr constant [2 x %emit_function_args_ty]
  41 // CHECK-SAME: [%emit_function_args_ty { i32 0, i32 {{[-0-9]+}}, i32 {{[-0-9]+}} }, %emit_function_args_ty { i32 1, i32 {{[-0-9]+}}, i32 {{[-0-9]+}} }]
  42
  43 // CHECK: @__llvm_internal_gcov_emit_file_info = internal unnamed_addr constant [1 x %file_info]
  44 /// 0x3330342a '3' '0' '4' '*'
  45 // 304-SAME: i32 858797098
  46 /// 0x3430372a '4' '0' '7' '*'
  47 // 407-SAME: i32 875575082
  48 /// 0x3430382a '4' '0' '8' '*'
  49 // 408-SAME: i32 875575338
  50
  51 // Check that the noredzone flag is set on the generated functions.
  52
  53 // CHECK: void @__llvm_gcov_writeout() unnamed_addr [[NRZ:#[0-9]+]]
  54 // CHECK: void @__llvm_gcov_init() unnamed_addr [[NRZ]]
  55
  56 // CHECK: attributes [[NRZ]] = { {{.*}}noredzone{{.*}} }
  57
  58 // GCOV_FILE_INFO: !llvm.gcov = !{![[GCOV:[0-9]+]]}
  59 // GCOV_FILE_INFO: ![[GCOV]] = !{!"aaa.gcno", !"bbb.gcda", !{{[0-9]+}}}