clang/test/CodeGen/msp430-fp-elim.c

   1 // REQUIRES: msp430-registered-target
   2 // RUN: %clang_cc1 -mframe-pointer=all -triple msp430 -S %s -o - | FileCheck %s --check-prefix=FP_ENFORCED
   3 // RUN: %clang_cc1 -triple msp430 -S %s -o - | FileCheck %s --check-prefix=FP_DEFAULT
   4
   5 // Check the frame pointer is not used on MSP430 by default, but can be forcibly turned on.
   6
   7 // FP_ENFORCED: push r4
   8 // FP_ENFORCED: mov r4, r4
   9 // FP_ENFORCED: pop r4
  10 // FP_DEFAULT: .globl fp_elim_check
  11 // FP_DEFAULT-NOT: push r4
  12 // FP_DEFAULT: mov r4, r4
  13 // FP_DEFAULT-NOT: pop r4
  14
  15 void fp_elim_check()
  16 {
  17         asm volatile ("mov r4, r4");
  18 }
  19