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add Compiler::truncateThenExtend

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This commit is contained in:
Joshua Warner 2014-05-01 11:43:10 -06:00
parent 99fa560257
commit 26d8e8aa1f
3 changed files with 23 additions and 2 deletions
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5
include/avian/codegen/compiler.h
View File

@ -107,6 +107,11 @@ class Compiler {
virtual void checkBounds(Operand* object, unsigned lengthOffset,
Operand* index, intptr_t handler) = 0;
virtual Operand* truncateThenExtend(ir::SignExtendMode signExtend,
ir::Type extendType,
ir::Type truncateType,
Operand* src) = 0;
virtual void store(ir::Type srcType,
Operand* src,
Operand* dst) = 0;

16
src/codegen/compiler.cpp
View File

@ -2609,6 +2609,22 @@ class MyCompiler: public Compiler {
static_cast<Value*>(index), handler);
}
virtual Operand* truncateThenExtend(ir::SignExtendMode signExtend,
ir::Type extendType,
ir::Type truncateType,
Operand* src)
{
Value* dst = value(&c, extendType);
appendMove(&c,
signExtend == ir::SignExtend ? lir::Move : lir::MoveZ,
TargetBytesPerWord,
truncateType.size(),
static_cast<Value*>(src),
extendType.size(),
dst);
return dst;
}
virtual void store(ir::Type srcType,
Operand* src,
Operand* dst)

4
src/compile.cpp
View File

@ -4831,8 +4831,8 @@ compile(MyThread* t, Frame* initialFrame, unsigned initialIp,
} break;
case i2l:
frame->pushLong(c->load(
ir::SignExtend, types.address, types.i4, frame->popInt(), types.i8));
frame->pushLong(c->truncateThenExtend(
ir::SignExtend, types.i8, types.i4, frame->popInt()));
break;
case i2s: {