clang/test/Profile/c-captured.c

   1 // RUN: %clang_cc1 -triple x86_64-apple-macosx10.9 -main-file-name c-captured.c %s -o - -emit-llvm -fprofile-instrument=clang | FileCheck -allow-deprecated-dag-overlap  -check-prefix=PGOGEN -check-prefix=PGOALL %s
   2
   3 // RUN: llvm-profdata merge %S/Inputs/c-captured.proftext -o %t.profdata
   4 // RUN: %clang_cc1 -triple x86_64-apple-macosx10.9 -main-file-name c-captured.c %s -o - -emit-llvm -fprofile-instrument-use-path=%t.profdata | FileCheck -allow-deprecated-dag-overlap  -check-prefix=PGOUSE -check-prefix=PGOALL %s
   5
   6 // PGOGEN: @[[DCC:__profc_debug_captured]] = private global [3 x i64] zeroinitializer
   7 // PGOGEN: @[[CSC:__profc_c_captured.c___captured_stmt]] = private global [2 x i64] zeroinitializer
   8 // PGOGEN: @[[C1C:__profc_c_captured.c___captured_stmt.1]] = private global [3 x i64] zeroinitializer
   9
  10 // PGOALL-LABEL: define{{.*}} void @debug_captured()
  11 // PGOGEN: store {{.*}} @[[DCC]]
  12 void debug_captured(void) {
  13   int x = 10;
  14
  15 // Check both debug_captured counters, so we can do this all in one pass
  16 // PGOGEN: store {{.*}} @[[DCC]], i32 0, i32 1
  17 // PGOUSE: br {{.*}} !prof ![[DC1:[0-9]+]]
  18 // PGOGEN: store {{.*}} @[[DCC]], i32 0, i32 2
  19 // PGOUSE: br {{.*}} !prof ![[DC2:[0-9]+]]
  20 // PGOALL: ret
  21
  22 // PGOALL-LABEL: define internal void @__captured_stmt(
  23 // PGOGEN: store {{.*}} @[[CSC]]
  24 #pragma clang __debug captured
  25   {
  26     // PGOGEN: store {{.*}} @[[CSC]], i32 0, i32 1
  27     // PGOUSE: br {{.*}} !prof ![[CS1:[0-9]+]]
  28     if (x) {}
  29     // PGOALL: ret
  30   }
  31
  32   if (x) {} // This is DC1. Checked above.
  33
  34 // PGOALL-LABEL: define internal void @__captured_stmt.1(
  35 // PGOGEN: store {{.*}} @[[C1C]]
  36 #pragma clang __debug captured
  37   {
  38     // PGOGEN: store {{.*}} @[[C1C]], i32 0, i32 1
  39     // PGOUSE: br {{.*}} !prof ![[C11:[0-9]+]]
  40     for (int i = 0; i < x; ++i) {}
  41     // PGOGEN: store {{.*}} @[[C1C]], i32 0, i32 2
  42     // PGOUSE: br {{.*}} !prof ![[C12:[0-9]+]]
  43     if (x) {}
  44     // PGOALL: ret
  45   }
  46
  47   if (x) {} // This is DC2. Checked above.
  48 }
  49
  50 // PGOUSE-DAG: ![[DC1]] = !{!"branch_weights", i32 2, i32 1}
  51 // PGOUSE-DAG: ![[DC2]] = !{!"branch_weights", i32 2, i32 1}
  52 // PGOUSE-DAG: ![[CS1]] = !{!"branch_weights", i32 2, i32 1}
  53 // PGOUSE-DAG: ![[C11]] = !{!"branch_weights", i32 11, i32 2}
  54 // PGOUSE-DAG: ![[C12]] = !{!"branch_weights", i32 2, i32 1}
  55
  56 int main(int argc, const char *argv[]) {
  57   debug_captured();
  58   return 0;
  59 }