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This intrinsic implements IEEE-754 operation roundToIntegralTiesToEven, and performs rounding to the nearest integer value, rounding halfway cases to even. The intrinsic represents the missed case of IEEE-754 rounding operations and now llvm provides full support of the rounding operations defined by the standard. Differential Revision: https://reviews.llvm.org/D75670
108 lines
5.4 KiB
C++
108 lines
5.4 KiB
C++
//===- llvm/IR/ConstrainedOps.def - Constrained intrinsics ------*- C++ -*-===//
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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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// Defines properties of constrained intrinsics, in particular corresponding
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// floating point operations and DAG nodes.
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//
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//===----------------------------------------------------------------------===//
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// DAG_FUNCTION defers to DAG_INSTRUCTION if its defined, otherwise FUNCTION.
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#ifndef DAG_FUNCTION
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#ifdef DAG_INSTRUCTION
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#define DAG_FUNCTION(N,A,R,I,D) DAG_INSTRUCTION(N,A,R,I,D)
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#else
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#define DAG_FUNCTION(N,A,R,I,D) FUNCTION(N,A,R,I)
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#endif
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#endif
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#ifndef INSTRUCTION
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#define INSTRUCTION(N,A,R,I)
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#endif
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// DAG_INSTRUCTION is treated like an INSTRUCTION if the DAG node isn't used.
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#ifndef DAG_INSTRUCTION
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#define DAG_INSTRUCTION(N,A,R,I,D) INSTRUCTION(N,A,R,I)
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#endif
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// In most cases intrinsic function is handled similar to instruction.
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#ifndef FUNCTION
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#define FUNCTION(N,A,R,I) INSTRUCTION(N,A,R,I)
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#endif
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// Compare instruction have a DAG node so they are treated like DAG_INSTRUCTION.
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#ifndef CMP_INSTRUCTION
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#define CMP_INSTRUCTION(N,A,R,I,D) DAG_INSTRUCTION(N,A,R,I,D)
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#endif
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// Arguments of the entries are:
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// - instruction or intrinsic function name.
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// - Number of original instruction/intrinsic arguments.
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// - 1 if the corresponding constrained intrinsic has rounding mode argument.
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// - name of the constrained intrinsic to represent this instruction/function.
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// - DAG node corresponding to the constrained intrinsic without prefix STRICT_.
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// These are definitions for instructions, that are converted into constrained
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// intrinsics.
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//
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DAG_INSTRUCTION(FAdd, 2, 1, experimental_constrained_fadd, FADD)
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DAG_INSTRUCTION(FSub, 2, 1, experimental_constrained_fsub, FSUB)
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DAG_INSTRUCTION(FMul, 2, 1, experimental_constrained_fmul, FMUL)
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DAG_INSTRUCTION(FDiv, 2, 1, experimental_constrained_fdiv, FDIV)
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DAG_INSTRUCTION(FRem, 2, 1, experimental_constrained_frem, FREM)
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DAG_INSTRUCTION(FPExt, 1, 0, experimental_constrained_fpext, FP_EXTEND)
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DAG_INSTRUCTION(SIToFP, 1, 1, experimental_constrained_sitofp, SINT_TO_FP)
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DAG_INSTRUCTION(UIToFP, 1, 1, experimental_constrained_uitofp, UINT_TO_FP)
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DAG_INSTRUCTION(FPToSI, 1, 0, experimental_constrained_fptosi, FP_TO_SINT)
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DAG_INSTRUCTION(FPToUI, 1, 0, experimental_constrained_fptoui, FP_TO_UINT)
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DAG_INSTRUCTION(FPTrunc, 1, 1, experimental_constrained_fptrunc, FP_ROUND)
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// These are definitions for compare instructions (signaling and quiet version).
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// Both of these match to FCmp / SETCC.
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CMP_INSTRUCTION(FCmp, 2, 0, experimental_constrained_fcmp, FSETCC)
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CMP_INSTRUCTION(FCmp, 2, 0, experimental_constrained_fcmps, FSETCCS)
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// Theses are definitions for intrinsic functions, that are converted into
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// constrained intrinsics.
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//
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DAG_FUNCTION(ceil, 1, 0, experimental_constrained_ceil, FCEIL)
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DAG_FUNCTION(cos, 1, 1, experimental_constrained_cos, FCOS)
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DAG_FUNCTION(exp, 1, 1, experimental_constrained_exp, FEXP)
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DAG_FUNCTION(exp2, 1, 1, experimental_constrained_exp2, FEXP2)
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DAG_FUNCTION(floor, 1, 0, experimental_constrained_floor, FFLOOR)
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DAG_FUNCTION(fma, 3, 1, experimental_constrained_fma, FMA)
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DAG_FUNCTION(log, 1, 1, experimental_constrained_log, FLOG)
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DAG_FUNCTION(log10, 1, 1, experimental_constrained_log10, FLOG10)
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DAG_FUNCTION(log2, 1, 1, experimental_constrained_log2, FLOG2)
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DAG_FUNCTION(lrint, 1, 1, experimental_constrained_lrint, LRINT)
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DAG_FUNCTION(llrint, 1, 1, experimental_constrained_llrint, LLRINT)
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DAG_FUNCTION(lround, 1, 0, experimental_constrained_lround, LROUND)
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DAG_FUNCTION(llround, 1, 0, experimental_constrained_llround, LLROUND)
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DAG_FUNCTION(maxnum, 2, 0, experimental_constrained_maxnum, FMAXNUM)
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DAG_FUNCTION(minnum, 2, 0, experimental_constrained_minnum, FMINNUM)
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DAG_FUNCTION(maximum, 2, 0, experimental_constrained_maximum, FMAXIMUM)
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DAG_FUNCTION(minimum, 2, 0, experimental_constrained_minimum, FMINIMUM)
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DAG_FUNCTION(nearbyint, 1, 1, experimental_constrained_nearbyint, FNEARBYINT)
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DAG_FUNCTION(pow, 2, 1, experimental_constrained_pow, FPOW)
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DAG_FUNCTION(powi, 2, 1, experimental_constrained_powi, FPOWI)
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DAG_FUNCTION(rint, 1, 1, experimental_constrained_rint, FRINT)
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DAG_FUNCTION(round, 1, 0, experimental_constrained_round, FROUND)
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DAG_FUNCTION(roundeven, 1, 0, experimental_constrained_roundeven, FROUNDEVEN)
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DAG_FUNCTION(sin, 1, 1, experimental_constrained_sin, FSIN)
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DAG_FUNCTION(sqrt, 1, 1, experimental_constrained_sqrt, FSQRT)
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DAG_FUNCTION(trunc, 1, 0, experimental_constrained_trunc, FTRUNC)
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// This is definition for fmuladd intrinsic function, that is converted into
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// constrained FMA or FMUL + FADD intrinsics.
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FUNCTION(fmuladd, 3, 1, experimental_constrained_fmuladd)
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#undef INSTRUCTION
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#undef FUNCTION
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#undef CMP_INSTRUCTION
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#undef DAG_INSTRUCTION
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#undef DAG_FUNCTION
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