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GlobalISel: Add a clarification to G_STORE documentation
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Authored by arsenm on May 26 2020, 8:25 AM.

Reviewers

Summary

Mirror the note on G_LOAD. We probably do need to add an explicit
G_TRUNCSTORE opcode for the vector case, although I do not have a use
for it.

LGTM

This revision is now accepted and ready to land.May 26 2020, 4:16 PM

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GlobalISel/

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	G_INDEXED_ZEXTLOAD			G_INDEXED_ZEXTLOAD
	^^^^^^^^^^^^^^^^^^			^^^^^^^^^^^^^^^^^^

	Same as G_INDEXED_LOAD except that the load performed is zero-extending, as with G_ZEXTLOAD.			Same as G_INDEXED_LOAD except that the load performed is zero-extending, as with G_ZEXTLOAD.

	G_STORE			G_STORE
	^^^^^^^			^^^^^^^

	Generic store. Expects a MachineMemOperand in addition to explicit operands.			Generic store. Expects a MachineMemOperand in addition to explicit
				operands. If the stored value size is greater than the memory size,
				the high bits are implicitly truncated. If this is a vector store, the
				high elements are discarded (i.e. this does not function as a per-lane
				vector, truncating store)

	G_INDEXED_STORE			G_INDEXED_STORE
	^^^^^^^^^^^^^^^			^^^^^^^^^^^^^^^

	Combines a store with a GEP. See description of G_INDEXED_LOAD for indexing behaviour.			Combines a store with a GEP. See description of G_INDEXED_LOAD for indexing behaviour.

	G_ATOMIC_CMPXCHG_WITH_SUCCESS			G_ATOMIC_CMPXCHG_WITH_SUCCESS
	^^^^^^^^^^^^^^^^^^^^^^^^^^^^^			^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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