clang/test/CodeGen/attr-disable-tail-calls.c

   1 // RUN: %clang_cc1 -triple x86_64-apple-macosx10.7.0 %s -emit-llvm -fno-optimize-sibling-calls -o - | FileCheck %s -check-prefix=DISABLE
   2 // RUN: %clang_cc1 -triple x86_64-apple-macosx10.7.0 %s -emit-llvm -o - | FileCheck %s -check-prefix=ENABLE
   3
   4 // DISABLE: define{{.*}} i32 @f1() [[ATTRTRUE:#[0-9]+]] {
   5 // DISABLE: define{{.*}} i32 @f2() [[ATTRTRUE]] {
   6 // ENABLE: define{{.*}} i32 @f1() [[ATTRFALSE:#[0-9]+]] {
   7 // ENABLE: define{{.*}} i32 @f2() [[ATTRTRUE:#[0-9]+]] {
   8
   9 int f1(void) {
  10   return 0;
  11 }
  12
  13 int f2(void) __attribute__((disable_tail_calls)) {
  14   return 0;
  15 }
  16
  17 // DISABLE: attributes [[ATTRTRUE]] = { {{.*}}"disable-tail-calls"="true"{{.*}} }
  18 // ENABLE-NOT: attributes [[ATTRFALSE]] = { {{.*}}"disable-tail-calls"="false"{{.*}} }
  19 // ENABLE: attributes [[ATTRTRUE]] = { {{.*}}"disable-tail-calls"="true"{{.*}} }