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
37 lines
1.0 KiB
ArmAsm
37 lines
1.0 KiB
ArmAsm
//===-- unorddf2vfp.S - Implement unorddf2vfp ------------------------------===//
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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 __unorddf2vfp(double a, double b);
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//
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// Returns one iff a or b is NaN
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// Uses Darwin calling convention where double precision arguments are passsed
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// like in GPR pairs.
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//
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.syntax unified
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.p2align 2
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DEFINE_COMPILERRT_FUNCTION(__unorddf2vfp)
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#if defined(COMPILER_RT_ARMHF_TARGET)
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vcmp.f64 d0, d1
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#else
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vmov d6, r0, r1 // load r0/r1 pair in double register
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vmov d7, r2, r3 // load r2/r3 pair in double register
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vcmp.f64 d6, d7
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#endif
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vmrs apsr_nzcv, fpscr
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ITE(vs)
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movvs r0, #1 // set result register to 1 if "overflow" (any NaNs)
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movvc r0, #0
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bx lr
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END_COMPILERRT_FUNCTION(__unorddf2vfp)
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NO_EXEC_STACK_DIRECTIVE
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