floatsisfvfp.S revision 2d1fdb26e458c4ddc04155c1d421bced3ba90cd0
1//===-- floatsisfvfp.S - Implement floatsisfvfp ---------------------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is dual licensed under the MIT and the University of Illinois Open 6// Source Licenses. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9 10#include "../assembly.h" 11 12// 13// extern float __floatsisfvfp(int a); 14// 15// Converts single precision float to a 32-bit int rounding towards zero. 16// Uses Darwin calling convention where a single precision result is 17// return in a GPR.. 18// 19 .syntax unified 20 .p2align 2 21DEFINE_COMPILERRT_FUNCTION(__floatsisfvfp) 22 vmov s15, r0 // move int to float register s15 23 vcvt.f32.s32 s15, s15 // convert 32-bit int in s15 to float in s15 24 vmov r0, s15 // move s15 to result register 25 bx lr 26END_COMPILERRT_FUNCTION(__floatsisfvfp) 27