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0ba22f51d1
Use the uniform single line C++/99 style for code comments. This is part of the cleanup proposed in "[RFC] compiler-rt builtins cleanup and refactoring". Differential Revision: https://reviews.llvm.org/D60352 llvm-svn: 359411
34 lines
1009 B
ArmAsm
34 lines
1009 B
ArmAsm
//===-- fixdfsivfp.S - Implement fixdfsivfp -----------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "../assembly.h"
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//
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// extern int __fixdfsivfp(double a);
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//
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// Converts double precision float to a 32-bit int rounding towards zero.
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// Uses Darwin calling convention where a double precision parameter is
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// passed in GPR register pair.
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//
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.syntax unified
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.p2align 2
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DEFINE_COMPILERRT_FUNCTION(__fixdfsivfp)
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#if defined(COMPILER_RT_ARMHF_TARGET)
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vcvt.s32.f64 s0, d0
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vmov r0, s0
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#else
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vmov d7, r0, r1 // load double register from R0/R1
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vcvt.s32.f64 s15, d7 // convert double to 32-bit int into s15
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vmov r0, s15 // move s15 to result register
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#endif
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bx lr
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END_COMPILERRT_FUNCTION(__fixdfsivfp)
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NO_EXEC_STACK_DIRECTIVE
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