clang/test/CodeGen/pgo-sample-thinlto-summary.c

   1 // RUN: %clang_cc1 -fdebug-pass-manager -O2 -fprofile-sample-use=%S/Inputs/pgo-sample-thinlto-summary.prof %s -emit-llvm -o - 2>&1 | FileCheck %s -check-prefix=SAMPLEPGO
   2 // RUN: %clang_cc1 -fdebug-pass-manager -O2 -fprofile-sample-use=%S/Inputs/pgo-sample-thinlto-summary.prof %s -emit-llvm -flto=thin -o - 2>&1 | FileCheck %s -check-prefix=THINLTO
   3
   4 int baz(int);
   5 int g;
   6
   7 void foo(int n) {
   8   for (int i = 0; i < n; i++)
   9     g += baz(i);
  10 }
  11
  12 // Checks that loop unroll and icp are invoked by normal compile, but not thinlto compile.
  13
  14 // SAMPLEPGO:               Running pass: PGOIndirectCallPromotion on [module]
  15 // SAMPLEPGO:               Running pass: LoopUnrollPass on bar
  16
  17 // THINLTO-NOT:             Running pass: PGOIndirectCallPromotion on [module]
  18 // THINLTO-NOT:             Running pass: LoopUnrollPass on bar
  19
  20 // Checks if hot call is inlined by normal compile, but not inlined by
  21 // thinlto compile.
  22 // SAMPLEPGO-LABEL: define {{(dso_local )?}}void @bar
  23 // THINLTO-LABEL: define {{(dso_local )?}}void @bar
  24 // SAMPLEPGO-NOT: call{{.*}}foo
  25 // THINLTO: call{{.*}}foo
  26 void bar(int n) {
  27   for (int i = 0; i < n; i++)
  28     foo(i);
  29 }