7686ff743c
This version of libcompiler_rt adds support for __mulo[sdt]i4(), which computes a multiply and its overflow flag. There are also a lot of cleanup fixes to headers that don't really affect us. Updating to this revision should make it a bit easier to contribute changes back to the LLVM developers.
26 lines
888 B
ArmAsm
26 lines
888 B
ArmAsm
//===-- truncdfsf2vfp.S - Implement truncdfsf2vfp -------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "../assembly.h"
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//
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// extern float __truncdfsf2vfp(double a);
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//
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// Converts double precision float to signle precision result.
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// Uses Darwin calling convention where a double precision parameter is
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// passed in a R0/R1 pair and a signle precision result is returned in R0.
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//
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.syntax unified
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.align 2
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DEFINE_COMPILERRT_FUNCTION(__truncdfsf2vfp)
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vmov d7, r0, r1 // load double from r0/r1 pair
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vcvt.f32.f64 s15, d7 // convert double to single (trucate precision)
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vmov r0, s15 // return result in r0
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bx lr
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