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