| //===-- truncdfsf2vfp.S - Implement truncdfsf2vfp -------------------------===// |
| // |
| // 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 float __truncdfsf2vfp(double a); |
| // |
| // Converts double precision float to signle precision result. |
| // Uses Darwin calling convention where a double precision parameter is |
| // passed in a R0/R1 pair and a signle precision result is returned in R0. |
| // |
| .syntax unified |
| .align 2 |
| DEFINE_COMPILERRT_FUNCTION(__truncdfsf2vfp) |
| vmov d7, r0, r1 // load double from r0/r1 pair |
| vcvt.f32.f64 s15, d7 // convert double to single (trucate precision) |
| vmov r0, s15 // return result in r0 |
| bx lr |