clang/test/Driver/test-uwtable.cpp

   1 // This test is added to provide test coverage for the uwtable attribute. It
   2 // aims to make sure that for an X86_64 output compiled with -fexceptions or
   3 //  -fno-exceptions, a uwtable attribute is emitted. However, for an AArch64
   4 //  output with -fexceptions a uwtable attribute is emitted, but with
   5 // -fno-exceptions a uwtable attribute is not emitted.
   6
   7 // RUN: %clang -g -fexceptions --target=x86_64-apple-darwin %s -S -emit-llvm -o - | FileCheck %s --check-prefix=X86_64_UWTABLE_EXCEPTIONS
   8 // X86_64_UWTABLE_EXCEPTIONS: attributes #0 = { {{.*}} uwtable
   9 // X86_64_UWTABLE_EXCEPTIONS: !{{[0-9]+}} = !{i32 7, !"uwtable", i32 2}
  10
  11 // RUN: %clang -g -fno-exceptions --target=x86_64-apple-darwin %s -S -emit-llvm -o - | FileCheck %s --check-prefix=X86_64_UWTABLE
  12 // X86_64_UWTABLE: attributes #0 = { {{.*}} uwtable
  13 // X86_64_UWTABLE: !{{[0-9]+}} = !{i32 7, !"uwtable", i32 2}
  14
  15 // RUN: %clang -g -fexceptions --target=arm64-apple-darwin %s -S -emit-llvm -o - | FileCheck %s --check-prefix=ARM64_UWTABLE_EXCEPTIONS
  16 // ARM64_UWTABLE_EXCEPTIONS: attributes #0 = { {{.*}} uwtable
  17 // ARM64_UWTABLE_EXCEPTIONS: !{{[0-9]+}} = !{i32 7, !"uwtable", i32 1}
  18
  19 // RUN: %clang -g -fno-exceptions --target=arm64-apple-darwin %s -S -emit-llvm -o - | FileCheck %s --check-prefix=ARM64_UWTABLE
  20 // ARM64_UWTABLE-NOT: attributes #0 = { {{.*}} uwtable
  21 // ARM64_UWTABLE-NOT: !{{[0-9]+}} = !{i32 7, !"uwtable", i32 2}
  22 // ARM64_UWTABLE: attributes #0 =
  23
  24 int main() {
  25     return 1;
  26 }