lib/Target/WebAssembly/WebAssemblyInstrConv.td

   1 //===-- WebAssemblyInstrConv.td-WebAssembly Conversion 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 /// \brief WebAssembly datatype conversions, truncations, reinterpretations,
  12 /// promotions, and demotions operand code-gen constructs.
  13 ///
  14 //===----------------------------------------------------------------------===//
  15
  16 let Defs = [ARGUMENTS] in {
  17
  18 def I32_WRAP_I64 : I<(outs I32:$dst), (ins I64:$src),
  19                       [(set I32:$dst, (trunc I64:$src))],
  20                       "i32.wrap/i64\t$dst, $src">;
  21
  22 def I64_EXTEND_S_I32 : I<(outs I64:$dst), (ins I32:$src),
  23                           [(set I64:$dst, (sext I32:$src))],
  24                           "i64.extend_s/i32\t$dst, $src">;
  25 def I64_EXTEND_U_I32 : I<(outs I64:$dst), (ins I32:$src),
  26                          [(set I64:$dst, (zext I32:$src))],
  27                          "i64.extend_u/i32\t$dst, $src">;
  28
  29 } // defs = [ARGUMENTS]
  30
  31 // Expand a "don't care" extend into zero-extend (chosen over sign-extend
  32 // somewhat arbitrarily, although it favors popular hardware architectures
  33 // and is conceptually a simpler operation).
  34 def : Pat<(i64 (anyext I32:$src)), (I64_EXTEND_U_I32 I32:$src)>;
  35
  36 let Defs = [ARGUMENTS] in {
  37
  38 // Conversion from floating point to integer traps on overflow and invalid.
  39 let hasSideEffects = 1 in {
  40 def I32_TRUNC_S_F32 : I<(outs I32:$dst), (ins F32:$src),
  41                         [(set I32:$dst, (fp_to_sint F32:$src))],
  42                         "i32.trunc_s/f32\t$dst, $src">;
  43 def I32_TRUNC_U_F32 : I<(outs I32:$dst), (ins F32:$src),
  44                         [(set I32:$dst, (fp_to_uint F32:$src))],
  45                         "i32.trunc_u/f32\t$dst, $src">;
  46 def I64_TRUNC_S_F32 : I<(outs I64:$dst), (ins F32:$src),
  47                         [(set I64:$dst, (fp_to_sint F32:$src))],
  48                         "i64.trunc_s/f32\t$dst, $src">;
  49 def I64_TRUNC_U_F32 : I<(outs I64:$dst), (ins F32:$src),
  50                         [(set I64:$dst, (fp_to_uint F32:$src))],
  51                         "i64.trunc_u/f32\t$dst, $src">;
  52 def I32_TRUNC_S_F64 : I<(outs I32:$dst), (ins F64:$src),
  53                         [(set I32:$dst, (fp_to_sint F64:$src))],
  54                         "i32.trunc_s/f64\t$dst, $src">;
  55 def I32_TRUNC_U_F64 : I<(outs I32:$dst), (ins F64:$src),
  56                         [(set I32:$dst, (fp_to_uint F64:$src))],
  57                         "i32.trunc_u/f64\t$dst, $src">;
  58 def I64_TRUNC_S_F64 : I<(outs I64:$dst), (ins F64:$src),
  59                         [(set I64:$dst, (fp_to_sint F64:$src))],
  60                         "i64.trunc_s/f64\t$dst, $src">;
  61 def I64_TRUNC_U_F64 : I<(outs I64:$dst), (ins F64:$src),
  62                         [(set I64:$dst, (fp_to_uint F64:$src))],
  63                         "i64.trunc_u/f64\t$dst, $src">;
  64 } // hasSideEffects = 1
  65
  66 def F32_CONVERT_S_I32 : I<(outs F32:$dst), (ins I32:$src),
  67                           [(set F32:$dst, (sint_to_fp I32:$src))],
  68                           "f32.convert_s/i32\t$dst, $src">;
  69 def F32_CONVERT_U_I32 : I<(outs F32:$dst), (ins I32:$src),
  70                           [(set F32:$dst, (uint_to_fp I32:$src))],
  71                           "f32.convert_u/i32\t$dst, $src">;
  72 def F64_CONVERT_S_I32 : I<(outs F64:$dst), (ins I32:$src),
  73                           [(set F64:$dst, (sint_to_fp I32:$src))],
  74                           "f64.convert_s/i32\t$dst, $src">;
  75 def F64_CONVERT_U_I32 : I<(outs F64:$dst), (ins I32:$src),
  76                           [(set F64:$dst, (uint_to_fp I32:$src))],
  77                           "f64.convert_u/i32\t$dst, $src">;
  78 def F32_CONVERT_S_I64 : I<(outs F32:$dst), (ins I64:$src),
  79                           [(set F32:$dst, (sint_to_fp I64:$src))],
  80                           "f32.convert_s/i64\t$dst, $src">;
  81 def F32_CONVERT_U_I64 : I<(outs F32:$dst), (ins I64:$src),
  82                           [(set F32:$dst, (uint_to_fp I64:$src))],
  83                           "f32.convert_u/i64\t$dst, $src">;
  84 def F64_CONVERT_S_I64 : I<(outs F64:$dst), (ins I64:$src),
  85                           [(set F64:$dst, (sint_to_fp I64:$src))],
  86                           "f64.convert_s/i64\t$dst, $src">;
  87 def F64_CONVERT_U_I64 : I<(outs F64:$dst), (ins I64:$src),
  88                           [(set F64:$dst, (uint_to_fp I64:$src))],
  89                           "f64.convert_u/i64\t$dst, $src">;
  90
  91 def F64_PROMOTE_F32 : I<(outs F64:$dst), (ins F32:$src),
  92                         [(set F64:$dst, (fextend F32:$src))],
  93                         "f64.promote/f32\t$dst, $src">;
  94 def F32_DEMOTE_F64 : I<(outs F32:$dst), (ins F64:$src),
  95                        [(set F32:$dst, (fround F64:$src))],
  96                        "f32.demote/f64\t$dst, $src">;
  97
  98 def I32_REINTERPRET_F32 : I<(outs I32:$dst), (ins F32:$src),
  99                             [(set I32:$dst, (bitconvert F32:$src))],
 100                             "i32.reinterpret/f32\t$dst, $src">;
 101 def F32_REINTERPRET_I32 : I<(outs F32:$dst), (ins I32:$src),
 102                             [(set F32:$dst, (bitconvert I32:$src))],
 103                             "f32.reinterpret/i32\t$dst, $src">;
 104 def I64_REINTERPRET_F64 : I<(outs I64:$dst), (ins F64:$src),
 105                             [(set I64:$dst, (bitconvert F64:$src))],
 106                             "i64.reinterpret/f64\t$dst, $src">;
 107 def F64_REINTERPRET_I64 : I<(outs F64:$dst), (ins I64:$src),
 108                             [(set F64:$dst, (bitconvert I64:$src))],
 109                             "f64.reinterpret/i64\t$dst, $src">;
 110
 111 } // Defs = [ARGUMENTS]