| //===-- unordsf2vfp.S - Implement unordsf2vfp -----------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is dual licensed under the MIT and the University of Illinois Open |
| // Source Licenses. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "../assembly.h" |
| |
| // |
| // extern int __unordsf2vfp(float a, float b); |
| // |
| // Returns one iff a or b is NaN |
| // Uses Darwin calling convention where single precision arguments are passsed |
| // like 32-bit ints |
| // |
| .syntax unified |
| .p2align 2 |
| DEFINE_COMPILERRT_FUNCTION(__unordsf2vfp) |
| #if defined(COMPILER_RT_ARMHF_TARGET) |
| vcmp.f32 s0, s1 |
| #else |
| vmov s14, r0 // move from GPR 0 to float register |
| vmov s15, r1 // move from GPR 1 to float register |
| vcmp.f32 s14, s15 |
| #endif |
| vmrs apsr_nzcv, fpscr |
| ITE(vs) |
| movvs r0, #1 // set result register to 1 if "overflow" (any NaNs) |
| movvc r0, #0 |
| bx lr |
| END_COMPILERRT_FUNCTION(__unordsf2vfp) |
| |
| NO_EXEC_STACK_DIRECTIVE |
| |
