clang/test/CodeGen/PowerPC/musttail.c

   1 // RUN: %clang_cc1 %s -triple powerpc64-ibm-aix-xcoff -o /dev/null -emit-llvm -verify=aix
   2 // RUN: %clang_cc1 %s -triple powerpc-ibm-aix-xcoff -o /dev/null -emit-llvm -verify=aix
   3 // RUN: %clang_cc1 %s -triple powerpc64-unknown-linux-gnu -o /dev/null -emit-llvm -verify=good
   4 // RUN: %clang_cc1 %s -triple powerpc-unknown-linux-gnu -o /dev/null -emit-llvm -verify=good
   5 // RUN: %clang_cc1 %s -triple powerpc64le-unknown-linux-gnu -o /dev/null -emit-llvm -verify=good
   6 // RUN: %clang_cc1 %s -triple powerpc64le-unknown-linux-gnu -target-feature +pcrelative-memops -o /dev/null -emit-llvm -verify=good
   7 // RUN: %clang_cc1 %s -triple powerpc64le-unknown-linux-gnu -target-feature +longcall -o /dev/null -emit-llvm -verify=longcall
   8 // RUN: %clang_cc1 %s -triple powerpc64le-unknown-linux-gnu -target-feature +pcrelative-memops -target-feature +longcall -o /dev/null -emit-llvm -verify=good
   9
  10 int foo(int x) {
  11   return x;
  12 }
  13
  14 int bar(int x)
  15 {
  16   // good-no-diagnostics
  17   // longcall-error@+2 {{'musttail' attribute for this call is impossible because long calls cannot be tail called on PPC}}
  18   // aix-error@+1 {{'musttail' attribute is not supported on AIX}}
  19  [[clang::musttail]] return foo(1);
  20 }