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//===-- floatsidfvfp.S - Implement floatsidfvfp ---------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "../assembly.h"
//
// extern double __floatsidfvfp(int a);
//
// Converts a 32-bit int to a double precision float.
// Uses Darwin calling convention where a double precision result is
// return in GPR register pair.
//
.syntax unified
.p2align 2
DEFINE_COMPILERRT_FUNCTION(__floatsidfvfp)
#if defined(COMPILER_RT_ARMHF_TARGET)
vmov s0, r0
vcvt.f64.s32 d0, s0
#else
vmov s15, r0 // move int to float register s15
vcvt.f64.s32 d7, s15 // convert 32-bit int in s15 to double in d7
vmov r0, r1, d7 // move d7 to result register pair r0/r1
#endif
bx lr
END_COMPILERRT_FUNCTION(__floatsidfvfp)
NO_EXEC_STACK_DIRECTIVE
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