clang/test/Sema/x86-diag-excessive-regsave.c

   1 // RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fsyntax-only -verify %s
   2 // RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fsyntax-only -verify %s -DNO_CALLER_SAVED_REGISTERS=1
   3 // RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -target-feature -x87 -target-feature -mmx -target-feature -sse -fsyntax-only -verify %s -DGPRONLY=1
   4
   5 #if defined(NO_CALLER_SAVED_REGS) || defined(GPRONLY)
   6 // expected-no-diagnostics
   7 #else
   8 #define EXPECT_WARNING
   9 #endif
  10
  11 #ifdef NO_CALLER_SAVED_REGS
  12 __attribute__((no_caller_saved_registers))
  13 #endif
  14 #ifdef EXPECT_WARNING
  15 // expected-note@+3 {{'foo' declared here}}
  16 // expected-note@+2 {{'foo' declared here}}
  17 #endif
  18 extern void foo(void *);
  19
  20 __attribute__((no_caller_saved_registers))
  21 void no_caller_saved_registers(void *arg) {
  22 #ifdef EXPECT_WARNING
  23 // expected-warning@+2 {{function with attribute 'no_caller_saved_registers' should only call a function with attribute 'no_caller_saved_registers' or be compiled with '-mgeneral-regs-only'}}
  24 #endif
  25     foo(arg);
  26 }
  27
  28 __attribute__((interrupt))
  29 void interrupt(void *arg) {
  30 #ifdef EXPECT_WARNING
  31 // expected-warning@+2 {{interrupt service routine should only call a function with attribute 'no_caller_saved_registers' or be compiled with '-mgeneral-regs-only'}}
  32 #endif
  33     foo(arg);
  34 }