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Remove the LLVM stack promotion pass and related SIL optimization logic.

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It's not needed anymore because array buffers are now allocated with alloc_ref instead of a swift_bufferAllocate runtime call.
This commit is contained in:
Erik Eckstein
2016-09-09 15:33:21 -07:00
parent b67959a6c1
commit bd0d2bfed4
13 changed files with 37 additions and 820 deletions
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22
stdlib/public/runtime/HeapObject.cpp
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@@ -107,28 +107,6 @@ extern "C" HeapObject* swift_bufferAllocate(
alignMask);
}
/// \brief Another entrypoint for swift_bufferAllocate.
/// It is generated by the compiler in some corner cases, e.g. if a serialized
/// optimized module is imported into a non-optimized main module.
/// TODO: This is only a workaround. Remove this function as soon as we can
/// get rid of the llvm SwiftStackPromotion pass.
SWIFT_RUNTIME_EXPORT
extern "C" HeapObject* swift_bufferAllocateOnStack(
HeapMetadata const* bufferType, size_t size, size_t alignMask) {
return swift::SWIFT_RT_ENTRY_CALL(swift_allocObject)(bufferType, size,
alignMask);
}
/// \brief Called at the end of the lifetime of an object returned by
/// swift_bufferAllocateOnStack.
/// It is generated by the compiler in some corner cases, e.g. if a serialized
/// optimized module is imported into a non-optimized main module.
/// TODO: This is only a workaround. Remove this function as soon as we can
/// get rid of the llvm SwiftStackPromotion pass.
SWIFT_RUNTIME_EXPORT
extern "C" void swift_bufferDeallocateFromStack(HeapObject *) {
}
SWIFT_RUNTIME_EXPORT
extern "C" intptr_t swift_bufferHeaderSize() { return sizeof(HeapObject); }