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1// WebAssemblyInstrFloat.td-WebAssembly Float codegen support ---*- tablegen -*-2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8///9/// \file10/// WebAssembly Floating-point operand code-gen constructs.11///12//===----------------------------------------------------------------------===//13 14multiclass UnaryFP<SDNode node, string name, bits<32> f32Inst,15 bits<32> f64Inst> {16 defm _F32 : I<(outs F32:$dst), (ins F32:$src), (outs), (ins),17 [(set F32:$dst, (node F32:$src))],18 !strconcat("f32.", !strconcat(name, "\t$dst, $src")),19 !strconcat("f32.", name), f32Inst>;20 defm _F64 : I<(outs F64:$dst), (ins F64:$src), (outs), (ins),21 [(set F64:$dst, (node F64:$src))],22 !strconcat("f64.", !strconcat(name, "\t$dst, $src")),23 !strconcat("f64.", name), f64Inst>;24}25multiclass BinaryFP<SDNode node, string name, bits<32> f32Inst,26 bits<32> f64Inst> {27 defm _F32 : I<(outs F32:$dst), (ins F32:$lhs, F32:$rhs), (outs), (ins),28 [(set F32:$dst, (node F32:$lhs, F32:$rhs))],29 !strconcat("f32.", !strconcat(name, "\t$dst, $lhs, $rhs")),30 !strconcat("f32.", name), f32Inst>;31 defm _F64 : I<(outs F64:$dst), (ins F64:$lhs, F64:$rhs), (outs), (ins),32 [(set F64:$dst, (node F64:$lhs, F64:$rhs))],33 !strconcat("f64.", !strconcat(name, "\t$dst, $lhs, $rhs")),34 !strconcat("f64.", name), f64Inst>;35}36multiclass ComparisonFP<CondCode cond, string name, bits<32> f32Inst, bits<32> f64Inst> {37 defm _F32 : I<(outs I32:$dst), (ins F32:$lhs, F32:$rhs), (outs), (ins),38 [(set I32:$dst, (setcc F32:$lhs, F32:$rhs, cond))],39 !strconcat("f32.", !strconcat(name, "\t$dst, $lhs, $rhs")),40 !strconcat("f32.", name), f32Inst>;41 defm _F64 : I<(outs I32:$dst), (ins F64:$lhs, F64:$rhs), (outs), (ins),42 [(set I32:$dst, (setcc F64:$lhs, F64:$rhs, cond))],43 !strconcat("f64.", !strconcat(name, "\t$dst, $lhs, $rhs")),44 !strconcat("f64.", name), f64Inst>;45}46 47let isCommutable = 1 in48defm ADD : BinaryFP<fadd, "add ", 0x92, 0xa0>;49defm SUB : BinaryFP<fsub, "sub ", 0x93, 0xa1>;50let isCommutable = 1 in51defm MUL : BinaryFP<fmul, "mul ", 0x94, 0xa2>;52defm DIV : BinaryFP<fdiv, "div ", 0x95, 0xa3>;53defm SQRT : UnaryFP<fsqrt, "sqrt", 0x91, 0x9f>;54 55defm ABS : UnaryFP<fabs, "abs ", 0x8b, 0x99>;56defm NEG : UnaryFP<fneg, "neg ", 0x8c, 0x9a>;57defm COPYSIGN : BinaryFP<fcopysign, "copysign", 0x98, 0xa6>;58 59let isCommutable = 1 in {60defm MIN : BinaryFP<fminimum, "min ", 0x96, 0xa4>;61defm MAX : BinaryFP<fmaximum, "max ", 0x97, 0xa5>;62} // isCommutable = 163 64defm CEIL : UnaryFP<fceil, "ceil", 0x8d, 0x9b>;65defm FLOOR : UnaryFP<ffloor, "floor", 0x8e, 0x9c>;66defm TRUNC : UnaryFP<ftrunc, "trunc", 0x8f, 0x9d>;67defm NEAREST : UnaryFP<fnearbyint, "nearest", 0x90, 0x9e>;68 69// DAGCombine oddly folds casts into the rhs of copysign. Unfold them.70def : Pat<(fcopysign F64:$lhs, F32:$rhs),71 (COPYSIGN_F64 F64:$lhs, (F64_PROMOTE_F32 F32:$rhs))>;72def : Pat<(fcopysign F32:$lhs, F64:$rhs),73 (COPYSIGN_F32 F32:$lhs, (F32_DEMOTE_F64 F64:$rhs))>;74 75// WebAssembly doesn't expose inexact exceptions, so map frint to fnearbyint.76def : Pat<(frint f32:$src), (NEAREST_F32 f32:$src)>;77def : Pat<(frint f64:$src), (NEAREST_F64 f64:$src)>;78 79// WebAssembly always rounds ties-to-even, so map froundeven to fnearbyint.80def : Pat<(froundeven f32:$src), (NEAREST_F32 f32:$src)>;81def : Pat<(froundeven f64:$src), (NEAREST_F64 f64:$src)>;82 83let isCommutable = 1 in {84defm EQ : ComparisonFP<SETOEQ, "eq ", 0x5b, 0x61>;85defm NE : ComparisonFP<SETUNE, "ne ", 0x5c, 0x62>;86} // isCommutable = 187defm LT : ComparisonFP<SETOLT, "lt ", 0x5d, 0x63>;88defm LE : ComparisonFP<SETOLE, "le ", 0x5f, 0x65>;89defm GT : ComparisonFP<SETOGT, "gt ", 0x5e, 0x64>;90defm GE : ComparisonFP<SETOGE, "ge ", 0x60, 0x66>;91 92// Don't care floating-point comparisons, supported via other comparisons.93def : Pat<(seteq f32:$lhs, f32:$rhs), (EQ_F32 f32:$lhs, f32:$rhs)>;94def : Pat<(setne f32:$lhs, f32:$rhs), (NE_F32 f32:$lhs, f32:$rhs)>;95def : Pat<(setlt f32:$lhs, f32:$rhs), (LT_F32 f32:$lhs, f32:$rhs)>;96def : Pat<(setle f32:$lhs, f32:$rhs), (LE_F32 f32:$lhs, f32:$rhs)>;97def : Pat<(setgt f32:$lhs, f32:$rhs), (GT_F32 f32:$lhs, f32:$rhs)>;98def : Pat<(setge f32:$lhs, f32:$rhs), (GE_F32 f32:$lhs, f32:$rhs)>;99def : Pat<(seteq f64:$lhs, f64:$rhs), (EQ_F64 f64:$lhs, f64:$rhs)>;100def : Pat<(setne f64:$lhs, f64:$rhs), (NE_F64 f64:$lhs, f64:$rhs)>;101def : Pat<(setlt f64:$lhs, f64:$rhs), (LT_F64 f64:$lhs, f64:$rhs)>;102def : Pat<(setle f64:$lhs, f64:$rhs), (LE_F64 f64:$lhs, f64:$rhs)>;103def : Pat<(setgt f64:$lhs, f64:$rhs), (GT_F64 f64:$lhs, f64:$rhs)>;104def : Pat<(setge f64:$lhs, f64:$rhs), (GE_F64 f64:$lhs, f64:$rhs)>;105 106defm SELECT_F32 : I<(outs F32:$dst), (ins F32:$lhs, F32:$rhs, I32:$cond),107 (outs), (ins),108 [(set F32:$dst, (select I32:$cond, F32:$lhs, F32:$rhs))],109 "f32.select\t$dst, $lhs, $rhs, $cond", "f32.select", 0x1b>;110defm SELECT_F64 : I<(outs F64:$dst), (ins F64:$lhs, F64:$rhs, I32:$cond),111 (outs), (ins),112 [(set F64:$dst, (select I32:$cond, F64:$lhs, F64:$rhs))],113 "f64.select\t$dst, $lhs, $rhs, $cond", "f64.select", 0x1b>;114 115// ISD::SELECT requires its operand to conform to getBooleanContents, but116// WebAssembly's select interprets any non-zero value as true, so we can fold117// a setne with 0 into a select.118def : Pat<(select (i32 (setne I32:$cond, 0)), F32:$lhs, F32:$rhs),119 (SELECT_F32 F32:$lhs, F32:$rhs, I32:$cond)>;120def : Pat<(select (i32 (setne I32:$cond, 0)), F64:$lhs, F64:$rhs),121 (SELECT_F64 F64:$lhs, F64:$rhs, I32:$cond)>;122 123// And again, this time with seteq instead of setne and the arms reversed.124def : Pat<(select (i32 (seteq I32:$cond, 0)), F32:$lhs, F32:$rhs),125 (SELECT_F32 F32:$rhs, F32:$lhs, I32:$cond)>;126def : Pat<(select (i32 (seteq I32:$cond, 0)), F64:$lhs, F64:$rhs),127 (SELECT_F64 F64:$rhs, F64:$lhs, I32:$cond)>;128