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Diffstat (limited to 'llvm/lib/Target/WebAssembly/WebAssemblyInstrFloat.td')
| -rw-r--r-- | llvm/lib/Target/WebAssembly/WebAssemblyInstrFloat.td | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyInstrFloat.td b/llvm/lib/Target/WebAssembly/WebAssemblyInstrFloat.td new file mode 100644 index 000000000000..5c9b34f44734 --- /dev/null +++ b/llvm/lib/Target/WebAssembly/WebAssemblyInstrFloat.td @@ -0,0 +1,130 @@ +// WebAssemblyInstrFloat.td-WebAssembly Float codegen support ---*- tablegen -*- +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +/// +/// \file +/// WebAssembly Floating-point operand code-gen constructs. +/// +//===----------------------------------------------------------------------===// + +multiclass UnaryFP<SDNode node, string name, bits<32> f32Inst, + bits<32> f64Inst> { + defm _F32 : I<(outs F32:$dst), (ins F32:$src), (outs), (ins), + [(set F32:$dst, (node F32:$src))], + !strconcat("f32.", !strconcat(name, "\t$dst, $src")), + !strconcat("f32.", name), f32Inst>; + defm _F64 : I<(outs F64:$dst), (ins F64:$src), (outs), (ins), + [(set F64:$dst, (node F64:$src))], + !strconcat("f64.", !strconcat(name, "\t$dst, $src")), + !strconcat("f64.", name), f64Inst>; +} +multiclass BinaryFP<SDNode node, string name, bits<32> f32Inst, + bits<32> f64Inst> { + defm _F32 : I<(outs F32:$dst), (ins F32:$lhs, F32:$rhs), (outs), (ins), + [(set F32:$dst, (node F32:$lhs, F32:$rhs))], + !strconcat("f32.", !strconcat(name, "\t$dst, $lhs, $rhs")), + !strconcat("f32.", name), f32Inst>; + defm _F64 : I<(outs F64:$dst), (ins F64:$lhs, F64:$rhs), (outs), (ins), + [(set F64:$dst, (node F64:$lhs, F64:$rhs))], + !strconcat("f64.", !strconcat(name, "\t$dst, $lhs, $rhs")), + !strconcat("f64.", name), f64Inst>; +} +multiclass ComparisonFP<CondCode cond, string name, bits<32> f32Inst, bits<32> f64Inst> { + defm _F32 : I<(outs I32:$dst), (ins F32:$lhs, F32:$rhs), (outs), (ins), + [(set I32:$dst, (setcc F32:$lhs, F32:$rhs, cond))], + !strconcat("f32.", !strconcat(name, "\t$dst, $lhs, $rhs")), + !strconcat("f32.", name), f32Inst>; + defm _F64 : I<(outs I32:$dst), (ins F64:$lhs, F64:$rhs), (outs), (ins), + [(set I32:$dst, (setcc F64:$lhs, F64:$rhs, cond))], + !strconcat("f64.", !strconcat(name, "\t$dst, $lhs, $rhs")), + !strconcat("f64.", name), f64Inst>; +} + +let isCommutable = 1 in +defm ADD : BinaryFP<fadd, "add ", 0x92, 0xa0>; +defm SUB : BinaryFP<fsub, "sub ", 0x93, 0xa1>; +let isCommutable = 1 in +defm MUL : BinaryFP<fmul, "mul ", 0x94, 0xa2>; +defm DIV : BinaryFP<fdiv, "div ", 0x95, 0xa3>; +defm SQRT : UnaryFP<fsqrt, "sqrt", 0x91, 0x9f>; + +defm ABS : UnaryFP<fabs, "abs ", 0x8b, 0x99>; +defm NEG : UnaryFP<fneg, "neg ", 0x8c, 0x9a>; +defm COPYSIGN : BinaryFP<fcopysign, "copysign", 0x98, 0xa6>; + +let isCommutable = 1 in { +defm MIN : BinaryFP<fminimum, "min ", 0x96, 0xa4>; +defm MAX : BinaryFP<fmaximum, "max ", 0x97, 0xa5>; +} // isCommutable = 1 + +defm CEIL : UnaryFP<fceil, "ceil", 0x8d, 0x9b>; +defm FLOOR : UnaryFP<ffloor, "floor", 0x8e, 0x9c>; +defm TRUNC : UnaryFP<ftrunc, "trunc", 0x8f, 0x9d>; +defm NEAREST : UnaryFP<fnearbyint, "nearest", 0x90, 0x9e>; + +// DAGCombine oddly folds casts into the rhs of copysign. Unfold them. +def : Pat<(fcopysign F64:$lhs, F32:$rhs), + (COPYSIGN_F64 F64:$lhs, (F64_PROMOTE_F32 F32:$rhs))>; +def : Pat<(fcopysign F32:$lhs, F64:$rhs), + (COPYSIGN_F32 F32:$lhs, (F32_DEMOTE_F64 F64:$rhs))>; + +// WebAssembly doesn't expose inexact exceptions, so map frint to fnearbyint. +def : Pat<(frint f32:$src), (NEAREST_F32 f32:$src)>; +def : Pat<(frint f64:$src), (NEAREST_F64 f64:$src)>; + +let isCommutable = 1 in { +defm EQ : ComparisonFP<SETOEQ, "eq ", 0x5b, 0x61>; +defm NE : ComparisonFP<SETUNE, "ne ", 0x5c, 0x62>; +} // isCommutable = 1 +defm LT : ComparisonFP<SETOLT, "lt ", 0x5d, 0x63>; +defm LE : ComparisonFP<SETOLE, "le ", 0x5f, 0x65>; +defm GT : ComparisonFP<SETOGT, "gt ", 0x5e, 0x64>; +defm GE : ComparisonFP<SETOGE, "ge ", 0x60, 0x66>; + +// Don't care floating-point comparisons, supported via other comparisons. +def : Pat<(seteq f32:$lhs, f32:$rhs), (EQ_F32 f32:$lhs, f32:$rhs)>; +def : Pat<(setne f32:$lhs, f32:$rhs), (NE_F32 f32:$lhs, f32:$rhs)>; +def : Pat<(setlt f32:$lhs, f32:$rhs), (LT_F32 f32:$lhs, f32:$rhs)>; +def : Pat<(setle f32:$lhs, f32:$rhs), (LE_F32 f32:$lhs, f32:$rhs)>; +def : Pat<(setgt f32:$lhs, f32:$rhs), (GT_F32 f32:$lhs, f32:$rhs)>; +def : Pat<(setge f32:$lhs, f32:$rhs), (GE_F32 f32:$lhs, f32:$rhs)>; +def : Pat<(seteq f64:$lhs, f64:$rhs), (EQ_F64 f64:$lhs, f64:$rhs)>; +def : Pat<(setne f64:$lhs, f64:$rhs), (NE_F64 f64:$lhs, f64:$rhs)>; +def : Pat<(setlt f64:$lhs, f64:$rhs), (LT_F64 f64:$lhs, f64:$rhs)>; +def : Pat<(setle f64:$lhs, f64:$rhs), (LE_F64 f64:$lhs, f64:$rhs)>; +def : Pat<(setgt f64:$lhs, f64:$rhs), (GT_F64 f64:$lhs, f64:$rhs)>; +def : Pat<(setge f64:$lhs, f64:$rhs), (GE_F64 f64:$lhs, f64:$rhs)>; + +defm SELECT_F32 : I<(outs F32:$dst), (ins F32:$lhs, F32:$rhs, I32:$cond), + (outs), (ins), + [(set F32:$dst, (select I32:$cond, F32:$lhs, F32:$rhs))], + "f32.select\t$dst, $lhs, $rhs, $cond", "f32.select", 0x1b>; +defm SELECT_F64 : I<(outs F64:$dst), (ins F64:$lhs, F64:$rhs, I32:$cond), + (outs), (ins), + [(set F64:$dst, (select I32:$cond, F64:$lhs, F64:$rhs))], + "f64.select\t$dst, $lhs, $rhs, $cond", "f64.select", 0x1b>; + +// ISD::SELECT requires its operand to conform to getBooleanContents, but +// WebAssembly's select interprets any non-zero value as true, so we can fold +// a setne with 0 into a select. +def : Pat<(select (i32 (setne I32:$cond, 0)), F32:$lhs, F32:$rhs), + (SELECT_F32 F32:$lhs, F32:$rhs, I32:$cond)>; +def : Pat<(select (i32 (setne I32:$cond, 0)), F64:$lhs, F64:$rhs), + (SELECT_F64 F64:$lhs, F64:$rhs, I32:$cond)>; + +// And again, this time with seteq instead of setne and the arms reversed. +def : Pat<(select (i32 (seteq I32:$cond, 0)), F32:$lhs, F32:$rhs), + (SELECT_F32 F32:$rhs, F32:$lhs, I32:$cond)>; +def : Pat<(select (i32 (seteq I32:$cond, 0)), F64:$lhs, F64:$rhs), + (SELECT_F64 F64:$rhs, F64:$lhs, I32:$cond)>; + +// The legalizer inserts an unnecessary `and 1` to make input conform +// to getBooleanContents, which we can lower away. +def : Pat<(select (i32 (and I32:$cond, 1)), F32:$lhs, F32:$rhs), + (SELECT_F32 F32:$lhs, F32:$rhs, I32:$cond)>; +def : Pat<(select (i32 (and I32:$cond, 1)), F64:$lhs, F64:$rhs), + (SELECT_F64 F64:$lhs, F64:$rhs, I32:$cond)>; |