clang/test/CodeGenCXX/split-stacks.cpp

   1 // RUN: %clang -target x86_64-linux-gnu -fsplit-stack -S -std=c++11 %s -emit-llvm -o - | FileCheck -check-prefix=CHECK-SEGSTK %s
   2 // RUN: %clang -target x86_64-linux-gnu -S -std=c++11 %s -emit-llvm -o - | FileCheck -check-prefix=CHECK-NOSEGSTK %s
   3
   4 int foo() {
   5   return 0;
   6 }
   7
   8 template <typename T>
   9 [[gnu::no_split_stack]]
  10 int tnosplit() {
  11   return 0;
  12 }
  13
  14 [[gnu::no_split_stack]]
  15 int nosplit() {
  16   return tnosplit<int>();
  17 }
  18
  19 // CHECK-SEGSTK: define dso_local noundef i32 @_Z3foov() [[SS:#[0-9]+]] {
  20 // CHECK-SEGSTK: define dso_local noundef i32 @_Z7nosplitv() [[NSS1:#[0-9]+]] {
  21 // CHECK-SEGSTK: define linkonce_odr dso_local noundef i32 @_Z8tnosplitIiEiv() [[NSS2:#[0-9]+]] comdat {
  22 // CHECK-SEGSTK-NOT: [[NSS1]] = { {{.*}} "split-stack" {{.*}} }
  23 // CHECK-SEGSTK-NOT: [[NSS2]] = { {{.*}} "split-stack" {{.*}} }
  24 // CHECK-SEGSTK: [[SS]] = { {{.*}} "split-stack" {{.*}} }
  25 // CHECK-SEGSTK-NOT: [[NSS1]] = { {{.*}} "split-stack" {{.*}} }
  26 // CHECK-SEGSTK-NOT: [[NSS2]] = { {{.*}} "split-stack" {{.*}} }
  27
  28 // CHECK-NOSEGSTK: define dso_local noundef i32 @_Z3foov() [[NSS0:#[0-9]+]] {
  29 // CHECK-NOSEGSTK: define dso_local noundef i32 @_Z7nosplitv() [[NSS1:#[0-9]+]] {
  30 // CHECK-NOSEGSTK: define linkonce_odr dso_local noundef i32 @_Z8tnosplitIiEiv() [[NSS0]] comdat {
  31 // CHECK-NOSEGSTK-NOT: [[NSS0]] = { {{.*}} "split-stack" {{.*}} }
  32 // CHECK-NOSEGSTK-NOT: [[NSS1]] = { {{.*}} "split-stack" {{.*}} }