clang/test/Frontend/backend-diagnostic.c

   1 // REQUIRES: x86-registered-target
   2 // Play around with backend reporting:
   3 // _REGULAR_: Regular behavior, no warning switch enabled.
   4 // _PROMOTE_: Promote warning to error.
   5 // _IGNORE_: Drop backend warning.
   6 //
   7 // RUN: not %clang_cc1 %s -fwarn-stack-size=0 -no-integrated-as -S -o - -triple=i386-apple-darwin 2> %t.err
   8 // RUN: FileCheck < %t.err %s --check-prefix=REGULAR --check-prefix=ASM
   9 // RUN: not %clang_cc1 %s -fwarn-stack-size=0 -no-integrated-as -S -o - -triple=i386-apple-darwin -Werror=frame-larger-than 2> %t.err
  10 // RUN: FileCheck < %t.err %s --check-prefix=PROMOTE --check-prefix=ASM
  11 // RUN: not %clang_cc1 %s -fwarn-stack-size=0 -no-integrated-as -S -o - -triple=i386-apple-darwin -Wno-frame-larger-than 2> %t.err
  12 // RUN: FileCheck < %t.err %s --check-prefix=IGNORE --check-prefix=ASM
  13 //
  14 // RUN: %clang_cc1 %s -S -o - -triple=i386-apple-darwin -verify -no-integrated-as
  15
  16 extern void doIt(char *);
  17
  18 // REGULAR: warning: stack frame size ([[#]]) exceeds limit ([[#]]) in 'stackSizeWarning'
  19 // PROMOTE: error: stack frame size ([[#]]) exceeds limit ([[#]]) in 'stackSizeWarning'
  20 // IGNORE-NOT: stack frame size ([[#]]) exceeds limit ([[#]]) in 'stackSizeWarning'
  21 void stackSizeWarning(void) {
  22   char buffer[80];
  23   doIt(buffer);
  24 }
  25
  26 // ASM: inline assembly requires more registers than available
  27 void inlineAsmError(int x0, int x1, int x2, int x3, int x4,
  28                     int x5, int x6, int x7, int x8, int x9) {
  29   __asm__("hello world": : "r" (x0),"r" (x1),"r" (x2),"r" (x3), // expected-error + {{inline assembly requires more registers than available}}
  30           "r" (x4),"r" (x5),"r" (x6),"r" (x7),"r" (x8),"r" (x9));
  31 }