llvm/lib/Target/WebAssembly/WebAssemblyInstrConv.td

//===-- WebAssemblyInstrConv.td-WebAssembly Conversion support -*- tablegen -*-=
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
///
/// \file
/// \brief WebAssembly datatype conversions, truncations, reinterpretations,
/// promotions, and demotions operand code-gen constructs.
///
//===----------------------------------------------------------------------===//

let Defs = [ARGUMENTS] in {

def I32_WRAP_I64 : I<(outs I32:$dst), (ins I64:$src),
                      [(set I32:$dst, (trunc I64:$src))],
                      "i32.wrap/i64\t$dst, $src">;

def I64_EXTEND_S_I32 : I<(outs I64:$dst), (ins I32:$src),
                          [(set I64:$dst, (sext I32:$src))],
                          "i64.extend_s/i32\t$dst, $src">;
def I64_EXTEND_U_I32 : I<(outs I64:$dst), (ins I32:$src),
                         [(set I64:$dst, (zext I32:$src))],
                         "i64.extend_u/i32\t$dst, $src">;

} // defs = [ARGUMENTS]

// Expand a "don't care" extend into zero-extend (chosen over sign-extend
// somewhat arbitrarily, although it favors popular hardware architectures
// and is conceptually a simpler operation).
def : Pat<(i64 (anyext I32:$src)), (I64_EXTEND_U_I32 I32:$src)>;

let Defs = [ARGUMENTS] in {

// Conversion from floating point to integer traps on overflow and invalid.
let hasSideEffects = 1 in {
def I32_TRUNC_S_F32 : I<(outs I32:$dst), (ins F32:$src),
                        [(set I32:$dst, (fp_to_sint F32:$src))],
                        "i32.trunc_s/f32\t$dst, $src">;
def I32_TRUNC_U_F32 : I<(outs I32:$dst), (ins F32:$src),
                        [(set I32:$dst, (fp_to_uint F32:$src))],
                        "i32.trunc_u/f32\t$dst, $src">;
def I64_TRUNC_S_F32 : I<(outs I64:$dst), (ins F32:$src),
                        [(set I64:$dst, (fp_to_sint F32:$src))],
                        "i64.trunc_s/f32\t$dst, $src">;
def I64_TRUNC_U_F32 : I<(outs I64:$dst), (ins F32:$src),
                        [(set I64:$dst, (fp_to_uint F32:$src))],
                        "i64.trunc_u/f32\t$dst, $src">;
def I32_TRUNC_S_F64 : I<(outs I32:$dst), (ins F64:$src),
                        [(set I32:$dst, (fp_to_sint F64:$src))],
                        "i32.trunc_s/f64\t$dst, $src">;
def I32_TRUNC_U_F64 : I<(outs I32:$dst), (ins F64:$src),
                        [(set I32:$dst, (fp_to_uint F64:$src))],
                        "i32.trunc_u/f64\t$dst, $src">;
def I64_TRUNC_S_F64 : I<(outs I64:$dst), (ins F64:$src),
                        [(set I64:$dst, (fp_to_sint F64:$src))],
                        "i64.trunc_s/f64\t$dst, $src">;
def I64_TRUNC_U_F64 : I<(outs I64:$dst), (ins F64:$src),
                        [(set I64:$dst, (fp_to_uint F64:$src))],
                        "i64.trunc_u/f64\t$dst, $src">;
} // hasSideEffects = 1

def F32_CONVERT_S_I32 : I<(outs F32:$dst), (ins I32:$src),
                          [(set F32:$dst, (sint_to_fp I32:$src))],
                          "f32.convert_s/i32\t$dst, $src">;
def F32_CONVERT_U_I32 : I<(outs F32:$dst), (ins I32:$src),
                          [(set F32:$dst, (uint_to_fp I32:$src))],
                          "f32.convert_u/i32\t$dst, $src">;
def F64_CONVERT_S_I32 : I<(outs F64:$dst), (ins I32:$src),
                          [(set F64:$dst, (sint_to_fp I32:$src))],
                          "f64.convert_s/i32\t$dst, $src">;
def F64_CONVERT_U_I32 : I<(outs F64:$dst), (ins I32:$src),
                          [(set F64:$dst, (uint_to_fp I32:$src))],
                          "f64.convert_u/i32\t$dst, $src">;
def F32_CONVERT_S_I64 : I<(outs F32:$dst), (ins I64:$src),
                          [(set F32:$dst, (sint_to_fp I64:$src))],
                          "f32.convert_s/i64\t$dst, $src">;
def F32_CONVERT_U_I64 : I<(outs F32:$dst), (ins I64:$src),
                          [(set F32:$dst, (uint_to_fp I64:$src))],
                          "f32.convert_u/i64\t$dst, $src">;
def F64_CONVERT_S_I64 : I<(outs F64:$dst), (ins I64:$src),
                          [(set F64:$dst, (sint_to_fp I64:$src))],
                          "f64.convert_s/i64\t$dst, $src">;
def F64_CONVERT_U_I64 : I<(outs F64:$dst), (ins I64:$src),
                          [(set F64:$dst, (uint_to_fp I64:$src))],
                          "f64.convert_u/i64\t$dst, $src">;

def F64_PROMOTE_F32 : I<(outs F64:$dst), (ins F32:$src),
                        [(set F64:$dst, (fpextend F32:$src))],
                        "f64.promote/f32\t$dst, $src">;
def F32_DEMOTE_F64 : I<(outs F32:$dst), (ins F64:$src),
                       [(set F32:$dst, (fpround F64:$src))],
                       "f32.demote/f64\t$dst, $src">;

def I32_REINTERPRET_F32 : I<(outs I32:$dst), (ins F32:$src),
                            [(set I32:$dst, (bitconvert F32:$src))],
                            "i32.reinterpret/f32\t$dst, $src">;
def F32_REINTERPRET_I32 : I<(outs F32:$dst), (ins I32:$src),
                            [(set F32:$dst, (bitconvert I32:$src))],
                            "f32.reinterpret/i32\t$dst, $src">;
def I64_REINTERPRET_F64 : I<(outs I64:$dst), (ins F64:$src),
                            [(set I64:$dst, (bitconvert F64:$src))],
                            "i64.reinterpret/f64\t$dst, $src">;
def F64_REINTERPRET_I64 : I<(outs F64:$dst), (ins I64:$src),
                            [(set F64:$dst, (bitconvert I64:$src))],
                            "f64.reinterpret/i64\t$dst, $src">;

} // Defs = [ARGUMENTS]