1 1.1 joerg //===-- floatsidfvfp.S - Implement floatsidfvfp ---------------------------===// 2 1.1 joerg // 3 1.1 joerg // The LLVM Compiler Infrastructure 4 1.1 joerg // 5 1.1 joerg // This file is dual licensed under the MIT and the University of Illinois Open 6 1.1 joerg // Source Licenses. See LICENSE.TXT for details. 7 1.1 joerg // 8 1.1 joerg //===----------------------------------------------------------------------===// 9 1.1 joerg 10 1.1 joerg #include "../assembly.h" 11 1.1 joerg 12 1.1 joerg // 13 1.1 joerg // extern double __floatsidfvfp(int a); 14 1.1 joerg // 15 1.1 joerg // Converts a 32-bit int to a double precision float. 16 1.1 joerg // Uses Darwin calling convention where a double precision result is 17 1.1 joerg // return in GPR register pair. 18 1.1 joerg // 19 1.1 joerg .syntax unified 20 1.1.1.2 joerg .p2align 2 21 1.1 joerg DEFINE_COMPILERRT_FUNCTION(__floatsidfvfp) 22 1.1 joerg vmov s15, r0 // move int to float register s15 23 1.1 joerg vcvt.f64.s32 d7, s15 // convert 32-bit int in s15 to double in d7 24 1.1 joerg vmov r0, r1, d7 // move d7 to result register pair r0/r1 25 1.1 joerg bx lr 26 1.1 joerg END_COMPILERRT_FUNCTION(__floatsidfvfp) 27
Indexes created Tue Sep 23 07:09:52 GMT 2025