clang/test/Sema/arm_inline_asm_constraints_no_fp_regs.c

   1 // REQUIRES: arm-registered-target
   2 // RUN: %clang_cc1 -triple arm -target-feature -fpregs -verify=arm-nofp %s
   3
   4 // w: A 32, 64, or 128-bit floating-point/SIMD register: s0-s31, d0-d31, or q0-q15.
   5 float test_w(float x) {
   6   __asm__("vsqrt.f32 %0, %1"
   7           : "=w"(x)
   8           : "w"(x)); // No error expected.
   9   // arm-nofp-error@7 {{invalid output constraint '=w' in asm}}
  10   return x;
  11 }
  12
  13 // x: A 32, 64, or 128-bit floating-point/SIMD register: s0-s15, d0-d7, or q0-q3.
  14 float test_x(float x) {
  15   __asm__("vsqrt.f32 %0, %1"
  16           : "=x"(x)
  17           : "x"(x)); // No error expected.
  18   // arm-nofp-error@16 {{invalid output constraint '=x' in asm}}
  19   return x;
  20 }
  21
  22 // t: A 32, 64, or 128-bit floating-point/SIMD register: s0-s31, d0-d15, or q0-q7.
  23 float test_t(float x) {
  24   __asm__("vsqrt.f32 %0, %1"
  25           : "=t"(x)
  26           : "t"(x)); // No error expected.
  27   // arm-nofp-error@25 {{invalid output constraint '=t' in asm}}
  28   return x;
  29 }