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/*
* Copyright 2015 WebAssembly Community Group participants
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <limits>
#include "optimizer.h"
#include "shared-constants.h"
#include "support/safe_integer.h"
using namespace cashew;
IString JS_FLOAT_ZERO;
IString SIMD_INT8X16_CHECK("SIMD_Int8x16_check");
IString SIMD_INT16X8_CHECK("SIMD_Int16x8_check");
IString SIMD_INT32X4_CHECK("SIMD_Int32x4_check");
IString SIMD_FLOAT32X4_CHECK("SIMD_Float32x4_check");
IString SIMD_FLOAT64X2_CHECK("SIMD_Float64x2_check");
Ref makeJsCoercedZero(JsType type) {
switch (type) {
case JS_INT:
return ValueBuilder::makeNum(0);
case JS_DOUBLE:
return ValueBuilder::makeUnary(PLUS, ValueBuilder::makeNum(0));
case JS_FLOAT: {
if (!JS_FLOAT_ZERO.isNull()) {
return ValueBuilder::makeName(JS_FLOAT_ZERO);
} else {
return ValueBuilder::makeCall(MATH_FROUND, ValueBuilder::makeNum(0));
}
}
case JS_FLOAT32X4: {
return ValueBuilder::makeCall(SIMD_FLOAT32X4,
ValueBuilder::makeNum(0),
ValueBuilder::makeNum(0),
ValueBuilder::makeNum(0),
ValueBuilder::makeNum(0));
}
case JS_FLOAT64X2: {
return ValueBuilder::makeCall(
SIMD_FLOAT64X2, ValueBuilder::makeNum(0), ValueBuilder::makeNum(0));
}
case JS_INT8X16: {
return ValueBuilder::makeCall(SIMD_INT8X16,
ValueBuilder::makeNum(0),
ValueBuilder::makeNum(0),
ValueBuilder::makeNum(0),
ValueBuilder::makeNum(0),
ValueBuilder::makeNum(0),
ValueBuilder::makeNum(0),
ValueBuilder::makeNum(0),
ValueBuilder::makeNum(0),
ValueBuilder::makeNum(0),
ValueBuilder::makeNum(0),
ValueBuilder::makeNum(0),
ValueBuilder::makeNum(0),
ValueBuilder::makeNum(0),
ValueBuilder::makeNum(0),
ValueBuilder::makeNum(0),
ValueBuilder::makeNum(0));
}
case JS_INT16X8: {
return ValueBuilder::makeCall(SIMD_INT16X8,
ValueBuilder::makeNum(0),
ValueBuilder::makeNum(0),
ValueBuilder::makeNum(0),
ValueBuilder::makeNum(0),
ValueBuilder::makeNum(0),
ValueBuilder::makeNum(0),
ValueBuilder::makeNum(0),
ValueBuilder::makeNum(0));
}
case JS_INT32X4: {
return ValueBuilder::makeCall(SIMD_INT32X4,
ValueBuilder::makeNum(0),
ValueBuilder::makeNum(0),
ValueBuilder::makeNum(0),
ValueBuilder::makeNum(0));
}
case JS_REF: {
return ValueBuilder::makeName(wasm::NULL_);
}
default:
assert(0);
}
abort();
}
bool needsJsCoercion(JsType type) {
// References need no coercion, but everything else does.
return type != JS_REF;
}
Ref makeJsCoercion(Ref node, JsType type) {
switch (type) {
case JS_INT:
return ValueBuilder::makeBinary(node, OR, ValueBuilder::makeNum(0));
case JS_DOUBLE:
return ValueBuilder::makeUnary(PLUS, node);
case JS_FLOAT:
return ValueBuilder::makeCall(MATH_FROUND, node);
case JS_FLOAT32X4:
return ValueBuilder::makeCall(SIMD_FLOAT32X4_CHECK, node);
case JS_FLOAT64X2:
return ValueBuilder::makeCall(SIMD_FLOAT64X2_CHECK, node);
case JS_INT8X16:
return ValueBuilder::makeCall(SIMD_INT8X16_CHECK, node);
case JS_INT16X8:
return ValueBuilder::makeCall(SIMD_INT16X8_CHECK, node);
case JS_INT32X4:
return ValueBuilder::makeCall(SIMD_INT32X4_CHECK, node);
case JS_REF:
case JS_NONE:
default:
// No coercion is needed.
// TODO see if JS_NONE is actually used here.
return node;
}
}
Ref makeSigning(Ref node, JsSign sign) {
assert(sign == JS_SIGNED || sign == JS_UNSIGNED);
return ValueBuilder::makeBinary(
node, sign == JS_SIGNED ? OR : TRSHIFT, ValueBuilder::makeNum(0));
}
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