1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
|
//===-- 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
.p2align 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
END_COMPILERRT_FUNCTION(__truncdfsf2vfp)
|
