derek.holloway
7502bf64a4
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57 lines
1.5 KiB
ArmAsm
57 lines
1.5 KiB
ArmAsm
//===-- cmpsf2.S - single-precision floating point comparison -------------===//
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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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//
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// This function has the semantics of GNU __cmpsf2: it's a three-way compare
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// which returns <0 if x<y, 0 if x==y, and >0 if x>y. If the result is
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// unordered (i.e. x or y or both is NaN) then it returns >0.
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//
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// This also makes it suitable for use as all of __eqsf2, __nesf2, __ltsf2 or
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// __lesf2.
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//
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//===----------------------------------------------------------------------===//
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#include "../assembly.h"
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.syntax unified
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.text
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.p2align 2
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op0 .req r0
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op1 .req r1
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.macro SetReturnRegister
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mov r0, #0
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movhi r0, #1
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movlo r0, #-1
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.endm
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#if __ARM_PCS_VFP
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DEFINE_COMPILERRT_FUNCTION(__cmpsf2)
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push {r4, lr}
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vmov r0, s0
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vmov r1, s1
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bl __compiler_rt_softfp_cmpsf2
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pop {r4, pc}
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#else
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DEFINE_COMPILERRT_FUNCTION_ALIAS(__cmpsf2, __compiler_rt_softfp_cmpsf2)
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#endif
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DEFINE_COMPILERRT_FUNCTION_ALIAS(__lesf2, __cmpsf2)
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DEFINE_COMPILERRT_FUNCTION_ALIAS(__ltsf2, __cmpsf2)
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DEFINE_COMPILERRT_FUNCTION_ALIAS(__eqsf2, __cmpsf2)
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DEFINE_COMPILERRT_FUNCTION_ALIAS(__nesf2, __cmpsf2)
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DEFINE_COMPILERRT_FUNCTION(__compiler_rt_softfp_cmpsf2)
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#include "fcmp.h"
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LOCAL_LABEL(NaN):
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mov r0, #+1
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bx lr
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END_COMPILERRT_FUNCTION(__compiler_rt_softfp_cmpsf2)
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NO_EXEC_STACK_DIRECTIVE
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