1214152Sed//===-- truncdfsf2vfp.S - Implement truncdfsf2vfp -------------------------===// 2214152Sed// 3214152Sed// The LLVM Compiler Infrastructure 4214152Sed// 5222656Sed// This file is dual licensed under the MIT and the University of Illinois Open 6222656Sed// Source Licenses. See LICENSE.TXT for details. 7214152Sed// 8214152Sed//===----------------------------------------------------------------------===// 9214152Sed 10214152Sed#include "../assembly.h" 11214152Sed 12214152Sed// 13214152Sed// extern float __truncdfsf2vfp(double a); 14214152Sed// 15214152Sed// Converts double precision float to signle precision result. 16214152Sed// Uses Darwin calling convention where a double precision parameter is 17214152Sed// passed in a R0/R1 pair and a signle precision result is returned in R0. 18214152Sed// 19229135Sed .syntax unified 20214152Sed .align 2 21214152SedDEFINE_COMPILERRT_FUNCTION(__truncdfsf2vfp) 22229135Sed vmov d7, r0, r1 // load double from r0/r1 pair 23229135Sed vcvt.f32.f64 s15, d7 // convert double to single (trucate precision) 24229135Sed vmov r0, s15 // return result in r0 25214152Sed bx lr 26