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Add instructions to allocate and deallocate packs.

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Having added these, I'm not entirely sure we couldn't just use
alloc_stack and dealloc_stack.  Well, if we find ourselves adding
a lot of redundancy with those instructions (e.g. around DI), we
can always go back and rip these out.
This commit is contained in:
John McCall
2023-01-31 22:39:34 -05:00
parent c491d25d06
commit 6bf9ac858b
18 changed files with 174 additions and 2 deletions
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15
lib/SIL/IR/SILInstructions.cpp
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@@ -296,6 +296,21 @@ DeallocStackInst *AllocStackInst::getSingleDeallocStack() const {
return Dealloc;
}
AllocPackInst *AllocPackInst::create(SILDebugLocation loc,
SILType packType,
SILFunction &F) {
assert(packType.isObject());
assert(packType.is<SILPackType>() && "pack type must be lowered");
auto resultType = packType.getAddressType();
SmallVector<SILValue, 8> allOperands;
collectTypeDependentOperands(allOperands, F, packType);
auto size = totalSizeToAlloc<swift::Operand>(allOperands.size());
auto buffer = F.getModule().allocateInst(size, alignof(AllocPackInst));
return ::new (buffer) AllocPackInst(loc, resultType, allOperands);
}
AllocRefInstBase::AllocRefInstBase(SILInstructionKind Kind,
SILDebugLocation Loc,
SILType ObjectType,