1// WebAssemblyInstrFloat.td-WebAssembly Float codegen support ---*- tablegen -*- 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9/// 10/// \file 11/// WebAssembly Floating-point operand code-gen constructs. 12/// 13//===----------------------------------------------------------------------===// 14 15multiclass UnaryFP<SDNode node, string name, bits<32> f32Inst, 16 bits<32> f64Inst> { 17 defm _F32 : I<(outs F32:$dst), (ins F32:$src), (outs), (ins), 18 [(set F32:$dst, (node F32:$src))], 19 !strconcat("f32.", !strconcat(name, "\t$dst, $src")), 20 !strconcat("f32.", name), f32Inst>; 21 defm _F64 : I<(outs F64:$dst), (ins F64:$src), (outs), (ins), 22 [(set F64:$dst, (node F64:$src))], 23 !strconcat("f64.", !strconcat(name, "\t$dst, $src")), 24 !strconcat("f64.", name), f64Inst>; 25} 26multiclass BinaryFP<SDNode node, string name, bits<32> f32Inst, 27 bits<32> f64Inst> { 28 defm _F32 : I<(outs F32:$dst), (ins F32:$lhs, F32:$rhs), (outs), (ins), 29 [(set F32:$dst, (node F32:$lhs, F32:$rhs))], 30 !strconcat("f32.", !strconcat(name, "\t$dst, $lhs, $rhs")), 31 !strconcat("f32.", name), f32Inst>; 32 defm _F64 : I<(outs F64:$dst), (ins F64:$lhs, F64:$rhs), (outs), (ins), 33 [(set F64:$dst, (node F64:$lhs, F64:$rhs))], 34 !strconcat("f64.", !strconcat(name, "\t$dst, $lhs, $rhs")), 35 !strconcat("f64.", name), f64Inst>; 36} 37multiclass ComparisonFP<CondCode cond, string name, bits<32> f32Inst, bits<32> f64Inst> { 38 defm _F32 : I<(outs I32:$dst), (ins F32:$lhs, F32:$rhs), (outs), (ins), 39 [(set I32:$dst, (setcc F32:$lhs, F32:$rhs, cond))], 40 !strconcat("f32.", !strconcat(name, "\t$dst, $lhs, $rhs")), 41 !strconcat("f32.", name), f32Inst>; 42 defm _F64 : I<(outs I32:$dst), (ins F64:$lhs, F64:$rhs), (outs), (ins), 43 [(set I32:$dst, (setcc F64:$lhs, F64:$rhs, cond))], 44 !strconcat("f64.", !strconcat(name, "\t$dst, $lhs, $rhs")), 45 !strconcat("f64.", name), f64Inst>; 46} 47 48let isCommutable = 1 in 49defm ADD : BinaryFP<fadd, "add ", 0x92, 0xa0>; 50defm SUB : BinaryFP<fsub, "sub ", 0x93, 0xa1>; 51let isCommutable = 1 in 52defm MUL : BinaryFP<fmul, "mul ", 0x94, 0xa2>; 53defm DIV : BinaryFP<fdiv, "div ", 0x95, 0xa3>; 54defm SQRT : UnaryFP<fsqrt, "sqrt", 0x91, 0x9f>; 55 56defm ABS : UnaryFP<fabs, "abs ", 0x8b, 0x99>; 57defm NEG : UnaryFP<fneg, "neg ", 0x8c, 0x9a>; 58defm COPYSIGN : BinaryFP<fcopysign, "copysign", 0x98, 0xa6>; 59 60let isCommutable = 1 in { 61defm MIN : BinaryFP<fminimum, "min ", 0x96, 0xa4>; 62defm MAX : BinaryFP<fmaximum, "max ", 0x97, 0xa5>; 63} // isCommutable = 1 64 65defm CEIL : UnaryFP<fceil, "ceil", 0x8d, 0x9b>; 66defm FLOOR : UnaryFP<ffloor, "floor", 0x8e, 0x9c>; 67defm TRUNC : UnaryFP<ftrunc, "trunc", 0x8f, 0x9d>; 68defm NEAREST : UnaryFP<fnearbyint, "nearest", 0x90, 0x9e>; 69 70// DAGCombine oddly folds casts into the rhs of copysign. Unfold them. 71def : Pat<(fcopysign F64:$lhs, F32:$rhs), 72 (COPYSIGN_F64 F64:$lhs, (F64_PROMOTE_F32 F32:$rhs))>; 73def : Pat<(fcopysign F32:$lhs, F64:$rhs), 74 (COPYSIGN_F32 F32:$lhs, (F32_DEMOTE_F64 F64:$rhs))>; 75 76// WebAssembly doesn't expose inexact exceptions, so map frint to fnearbyint. 77def : Pat<(frint f32:$src), (NEAREST_F32 f32:$src)>; 78def : Pat<(frint f64:$src), (NEAREST_F64 f64:$src)>; 79 80let isCommutable = 1 in { 81defm EQ : ComparisonFP<SETOEQ, "eq ", 0x5b, 0x61>; 82defm NE : ComparisonFP<SETUNE, "ne ", 0x5c, 0x62>; 83} // isCommutable = 1 84defm LT : ComparisonFP<SETOLT, "lt ", 0x5d, 0x63>; 85defm LE : ComparisonFP<SETOLE, "le ", 0x5f, 0x65>; 86defm GT : ComparisonFP<SETOGT, "gt ", 0x5e, 0x64>; 87defm GE : ComparisonFP<SETOGE, "ge ", 0x60, 0x66>; 88 89// Don't care floating-point comparisons, supported via other comparisons. 90def : Pat<(seteq f32:$lhs, f32:$rhs), (EQ_F32 f32:$lhs, f32:$rhs)>; 91def : Pat<(setne f32:$lhs, f32:$rhs), (NE_F32 f32:$lhs, f32:$rhs)>; 92def : Pat<(setlt f32:$lhs, f32:$rhs), (LT_F32 f32:$lhs, f32:$rhs)>; 93def : Pat<(setle f32:$lhs, f32:$rhs), (LE_F32 f32:$lhs, f32:$rhs)>; 94def : Pat<(setgt f32:$lhs, f32:$rhs), (GT_F32 f32:$lhs, f32:$rhs)>; 95def : Pat<(setge f32:$lhs, f32:$rhs), (GE_F32 f32:$lhs, f32:$rhs)>; 96def : Pat<(seteq f64:$lhs, f64:$rhs), (EQ_F64 f64:$lhs, f64:$rhs)>; 97def : Pat<(setne f64:$lhs, f64:$rhs), (NE_F64 f64:$lhs, f64:$rhs)>; 98def : Pat<(setlt f64:$lhs, f64:$rhs), (LT_F64 f64:$lhs, f64:$rhs)>; 99def : Pat<(setle f64:$lhs, f64:$rhs), (LE_F64 f64:$lhs, f64:$rhs)>; 100def : Pat<(setgt f64:$lhs, f64:$rhs), (GT_F64 f64:$lhs, f64:$rhs)>; 101def : Pat<(setge f64:$lhs, f64:$rhs), (GE_F64 f64:$lhs, f64:$rhs)>; 102 103defm SELECT_F32 : I<(outs F32:$dst), (ins F32:$lhs, F32:$rhs, I32:$cond), 104 (outs), (ins), 105 [(set F32:$dst, (select I32:$cond, F32:$lhs, F32:$rhs))], 106 "f32.select\t$dst, $lhs, $rhs, $cond", "f32.select", 0x1b>; 107defm SELECT_F64 : I<(outs F64:$dst), (ins F64:$lhs, F64:$rhs, I32:$cond), 108 (outs), (ins), 109 [(set F64:$dst, (select I32:$cond, F64:$lhs, F64:$rhs))], 110 "f64.select\t$dst, $lhs, $rhs, $cond", "f64.select", 0x1b>; 111 112// ISD::SELECT requires its operand to conform to getBooleanContents, but 113// WebAssembly's select interprets any non-zero value as true, so we can fold 114// a setne with 0 into a select. 115def : Pat<(select (i32 (setne I32:$cond, 0)), F32:$lhs, F32:$rhs), 116 (SELECT_F32 F32:$lhs, F32:$rhs, I32:$cond)>; 117def : Pat<(select (i32 (setne I32:$cond, 0)), F64:$lhs, F64:$rhs), 118 (SELECT_F64 F64:$lhs, F64:$rhs, I32:$cond)>; 119 120// And again, this time with seteq instead of setne and the arms reversed. 121def : Pat<(select (i32 (seteq I32:$cond, 0)), F32:$lhs, F32:$rhs), 122 (SELECT_F32 F32:$rhs, F32:$lhs, I32:$cond)>; 123def : Pat<(select (i32 (seteq I32:$cond, 0)), F64:$lhs, F64:$rhs), 124 (SELECT_F64 F64:$rhs, F64:$lhs, I32:$cond)>; 125 126// The legalizer inserts an unnecessary `and 1` to make input conform 127// to getBooleanContents, which we can lower away. 128def : Pat<(select (i32 (and I32:$cond, 1)), F32:$lhs, F32:$rhs), 129 (SELECT_F32 F32:$lhs, F32:$rhs, I32:$cond)>; 130def : Pat<(select (i32 (and I32:$cond, 1)), F64:$lhs, F64:$rhs), 131 (SELECT_F64 F64:$lhs, F64:$rhs, I32:$cond)>; 132