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: rm -rf %t && mkdir %t && cd %t
   6 // RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -disable-red-zone -coverage-data-file=/dev/null -coverage-version='B21*' %s -o - | \
   7 // RUN:   FileCheck --check-prefixes=CHECK,CHECK-CTOR-INIT,1210 %s
   8 // RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -disable-red-zone -coverage-data-file=/dev/null %s -o - | \
   9 // RUN:   FileCheck --check-prefixes=CHECK,CHECK-CTOR-INIT,1110 %s
  10 // RUN: %clang_cc1 -triple powerpc64-ibm-aix -emit-llvm -disable-red-zone -coverage-data-file=/dev/null -coverage-version='B21*' %s -o - | \
  11 // RUN:   FileCheck --check-prefixes=CHECK,CHECK-RT-INIT,1210 %s
  12 // RUN: %clang_cc1 -triple powerpc64-ibm-aix -emit-llvm -disable-red-zone -coverage-data-file=/dev/null %s -o - | \
  13 // RUN:   FileCheck --check-prefixes=CHECK,CHECK-RT-INIT,1110 %s
  14
  15 // RUN: %clang_cc1 -emit-llvm -disable-red-zone -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
  16
  17 // RUN: %clang_cc1 -emit-llvm-bc -o /dev/null -fdebug-pass-manager -coverage-data-file=/dev/null %s 2>&1 | FileCheck --check-prefix=NEWPM %s
  18 // RUN: %clang_cc1 -emit-llvm-bc -o /dev/null -fdebug-pass-manager -coverage-data-file=/dev/null -O3 %s 2>&1 | FileCheck --check-prefix=NEWPM-O3 %s
  19
  20 // NEWPM: Running pass: VerifierPass
  21 // NEWPM: Running pass: GCOVProfilerPass
  22
  23 // NEWPM-O3: Running pass: VerifierPass
  24 // NEWPM-O3: Running pass: Annotation2MetadataPass
  25 // NEWPM-O3: Running pass: ForceFunctionAttrsPass
  26 // NEWPM-O3: Running pass: GCOVProfilerPass
  27
  28 int test1(int a) {
  29   switch (a % 2) {
  30   case 0:
  31     ++a;
  32   case 1:
  33     a /= 2;
  34   }
  35   return a;
  36 }
  37
  38 int test2(int b) {
  39   return b * 2;
  40 }
  41
  42
  43 // CHECK: @__llvm_internal_gcov_emit_function_args.0 = internal unnamed_addr constant [2 x %emit_function_args_ty]
  44 // 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]+}} }]
  45
  46 // CHECK: @__llvm_internal_gcov_emit_file_info = internal unnamed_addr constant [1 x %file_info]
  47 /// 0x4231312a 'B' '1' '1' '*'
  48 // 1110-SAME: i32 1110520106
  49 /// 0x4232312a 'B' '2' '1' '*'
  50 // 1210-SAME: i32 1110585642
  51
  52 // Check for gcov initialization function pointers.
  53 // CHECK-RT-INIT: @__llvm_covinit_functions = private constant { ptr, ptr } { ptr @__llvm_gcov_writeout, ptr @__llvm_gcov_reset }, section "__llvm_covinit"
  54
  55 // Check that the noredzone flag is set on the generated functions.
  56
  57 // CHECK: void @__llvm_gcov_writeout() unnamed_addr [[NRZ:#[0-9]+]]
  58 // CHECK-CTOR-INIT: void @__llvm_gcov_init() unnamed_addr [[NRZ]]
  59
  60 // CHECK: attributes [[NRZ]] = { {{.*}}noredzone{{.*}} }
  61
  62 // GCOV_FILE_INFO: !llvm.gcov = !{![[GCOV:[0-9]+]]}
  63 // GCOV_FILE_INFO: ![[GCOV]] = !{!"aaa.gcno", !"bbb.gcda", !{{[0-9]+}}}