clang/test/Misc/inline-asm-clobber-warning.c

   1 /// This test checks that the warning includes the location in the C source
   2 /// file that contains the inline asm. Instead of saying <inline asm> for both.
   3 /// Although this warning is emitted in llvm it cannot be tested from IR as
   4 /// it does not have that location information at that stage.
   5
   6 // RUN: %clang -target arm-arm-none-eabi -march=armv7-m -c %s -o /dev/null \
   7 // RUN:   2>&1 | FileCheck %s
   8
   9 // REQUIRES: arm-registered-target
  10
  11 void bar(void) {
  12   __asm__ __volatile__("nop"
  13                        :
  14                        :
  15                        : "sp");
  16 }
  17
  18 // CHECK:      inline-asm-clobber-warning.c:12:24: warning: inline asm clobber list contains reserved registers: SP [-Winline-asm]
  19 // CHECK-NEXT:     __asm__ __volatile__("nop"
  20 // CHECK-NEXT:                          ^
  21 // CHECK-NEXT: inline-asm-clobber-warning.c:12:24: note: Reserved registers on the clobber list may not be preserved across the asm statement, and clobbering them may lead to undefined behaviour.