2009-09-12 09:23:48 +08:00
|
|
|
//===-- unordsf2vfp.S - Implement unordsf2vfp -----------------------------===//
|
|
|
|
|
//
|
|
|
|
|
// The LLVM Compiler Infrastructure
|
|
|
|
|
//
|
|
|
|
|
// This file is distributed under the University of Illinois Open Source
|
|
|
|
|
// License. See LICENSE.TXT for details.
|
|
|
|
|
//
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
|
|
2009-10-28 01:49:50 +08:00
|
|
|
#include "../assembly.h"
|
2009-09-12 09:23:48 +08:00
|
|
|
|
|
|
|
|
//
|
|
|
|
|
// 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
|
|
|
|
|
//
|
2009-10-28 01:50:21 +08:00
|
|
|
DEFINE_COMPILERRT_FUNCTION(__unordsf2vfp)
|
2009-09-12 09:23:48 +08:00
|
|
|
fmsr s14, r0 // move from GPR 0 to float register
|
|
|
|
|
fmsr s15, r1 // move from GPR 1 to float register
|
|
|
|
|
fcmps s14, s15
|
|
|
|
|
fmstat
|
|
|
|
|
movvs r0, #1 // set result register to 1 if "overflow" (any NaNs)
|
|
|
|
|
movvc r0, #0
|
|
|
|
|
bx lr
|
|
|
|
|
|
