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-exception 6// 7//===----------------------------------------------------------------------===// 8/// 9/// \file 10/// 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, $rhs")), 44 !strconcat("f64.", name), f64Inst>; 45} 46 47let isCommutable = 1 in 48defm ADD : BinaryFP<fadd, "add ", 0x92, 0xa0>; 49defm SUB : BinaryFP<fsub, "sub ", 0x93, 0xa1>; 50let isCommutable = 1 in 51defm MUL : BinaryFP<fmul, "mul ", 0x94, 0xa2>; 52defm DIV : BinaryFP<fdiv, "div ", 0x95, 0xa3>; 53defm SQRT : UnaryFP<fsqrt, "sqrt", 0x91, 0x9f>; 54 55defm ABS : UnaryFP<fabs, "abs ", 0x8b, 0x99>; 56defm NEG : UnaryFP<fneg, "neg ", 0x8c, 0x9a>; 57defm COPYSIGN : BinaryFP<fcopysign, "copysign", 0x98, 0xa6>; 58 59let isCommutable = 1 in { 60defm MIN : BinaryFP<fminimum, "min ", 0x96, 0xa4>; 61defm MAX : BinaryFP<fmaximum, "max ", 0x97, 0xa5>; 62} // isCommutable = 1 63 64defm CEIL : UnaryFP<fceil, "ceil", 0x8d, 0x9b>; 65defm FLOOR : UnaryFP<ffloor, "floor", 0x8e, 0x9c>; 66defm TRUNC : UnaryFP<ftrunc, "trunc", 0x8f, 0x9d>; 67defm NEAREST : UnaryFP<fnearbyint, "nearest", 0x90, 0x9e>; 68 69// DAGCombine oddly folds casts into the rhs of copysign. Unfold them. 70def : Pat<(fcopysign F64:$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:$src)>; 78 79let isCommutable = 1 in { 80defm EQ : ComparisonFP<SETOEQ, "eq ", 0x5b, 0x61>; 81defm NE : ComparisonFP<SETUNE, "ne ", 0x5c, 0x62>; 82} // isCommutable = 1 83defm LT : ComparisonFP<SETOLT, "lt ", 0x5d, 0x63>; 84defm LE : ComparisonFP<SETOLE, "le ", 0x5f, 0x65>; 85defm GT : ComparisonFP<SETOGT, "gt ", 0x5e, 0x64>; 86defm GE : ComparisonFP<SETOGE, "ge ", 0x60, 0x66>; 87 88// Don't care floating-point comparisons, supported via other comparisons. 89def : Pat<(seteq f32:$lhs, f32:$rhs), (EQ_F32 f32:$lhs, f32:$rhs)>; 90def : Pat<(setne f32:$lhs, f32:$rhs), (NE_F32 f32:$lhs, f32:$rhs)>; 91def : Pat<(setlt f32:$lhs, f32:$rhs), (LT_F32 f32:$lhs, f32:$rhs)>; 92def : Pat<(setle f32:$lhs, f32:$rhs), (LE_F32 f32:$lhs, f32:$rhs)>; 93def : Pat<(setgt f32:$lhs, f32:$rhs), (GT_F32 f32:$lhs, f32:$rhs)>; 94def : Pat<(setge f32:$lhs, f32:$rhs), (GE_F32 f32:$lhs, f32:$rhs)>; 95def : Pat<(seteq f64:$lhs, f64:$rhs), (EQ_F64 f64:$lhs, f64:$rhs)>; 96def : Pat<(setne f64:$lhs, f64:$rhs), (NE_F64 f64:$lhs, f64:$rhs)>; 97def : Pat<(setlt f64:$lhs, f64:$rhs), (LT_F64 f64:$lhs, f64:$rhs)>; 98def : Pat<(setle f64:$lhs, f64:$rhs), (LE_F64 f64:$lhs, f64:$rhs)>; 99def : Pat<(setgt f64:$lhs, f64:$rhs), (GT_F64 f64:$lhs, f64:$rhs)>; 100def : Pat<(setge f64:$lhs, f64:$rhs), (GE_F64 f64:$lhs, f64:$rhs)>; 101 102defm SELECT_F32 : I<(outs F32:$dst), (ins F32:$lhs, F32:$rhs, I32:$cond), 103 (outs), (ins), 104 [(set F32:$dst, (select I32:$cond, F32:$lhs, F32:$rhs))], 105 "f32.select\t$dst, $lhs, $rhs, $cond", "f32.select", 0x1b>; 106defm SELECT_F64 : I<(outs F64:$dst), (ins F64:$lhs, F64:$rhs, I32:$cond), 107 (outs), (ins), 108 [(set F64:$dst, (select I32:$cond, F64:$lhs, F64:$rhs))], 109 "f64.select\t$dst, $lhs, $rhs, $cond", "f64.select", 0x1b>; 110 111// ISD::SELECT requires its operand to conform to getBooleanContents, but 112// WebAssembly's select interprets any non-zero value as true, so we can fold 113// a setne with 0 into a select. 114def : Pat<(select (i32 (setne I32:$cond, 0)), F32:$lhs, F32:$rhs), 115 (SELECT_F32 F32:$lhs, F32:$rhs, I32:$cond)>; 116def : Pat<(select (i32 (setne I32:$cond, 0)), F64:$lhs, F64:$rhs), 117 (SELECT_F64 F64:$lhs, F64:$rhs, I32:$cond)>; 118 119// And again, this time with seteq instead of setne and the arms reversed. 120def : Pat<(select (i32 (seteq I32:$cond, 0)), F32:$lhs, F32:$rhs), 121 (SELECT_F32 F32:$rhs, F32:$lhs, I32:$cond)>; 122def : Pat<(select (i32 (seteq I32:$cond, 0)), F64:$lhs, F64:$rhs), 123 (SELECT_F64 F64:$rhs, F64:$lhs, I32:$cond)>; 124