floatunssidfvfp.S revision 2d1fdb26e458c4ddc04155c1d421bced3ba90cd0
1//===-- floatunssidfvfp.S - Implement floatunssidfvfp ---------------------===// 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 double __floatunssidfvfp(unsigned int a); 14// 15// Converts a 32-bit int to a double precision float. 16// Uses Darwin calling convention where a double precision result is 17// return in GPR register pair. 18// 19 .syntax unified 20 .p2align 2 21DEFINE_COMPILERRT_FUNCTION(__floatunssidfvfp) 22 vmov s15, r0 // move int to float register s15 23 vcvt.f64.u32 d7, s15 // convert 32-bit int in s15 to double in d7 24 vmov r0, r1, d7 // move d7 to result register pair r0/r1 25 bx lr 26END_COMPILERRT_FUNCTION(__floatunssidfvfp) 27