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Commit Graph

Author	SHA1	Message	Date
Matt Arsenault	4859dd4170	AMDGPU: Handle rewriting ptrmask for more address spaces If this mask only clears bits in the low 32-bit half of a flat pointer, these bits are always preserved in the result address space. If the high bits are modified, they may need to be preserved for some kind of user pointer tagging.	2020-05-28 14:35:15 -04:00
Matt Arsenault	d6671ee90c	InferAddressSpaces: Handle ptrmask intrinsic This one is slightly odd since it counts as an address expression, which previously could never fail. Allow the existing TTI hook to return the value to use, and re-use it for handling how to handle ptrmask. Handles the no-op addrspacecasts for AMDGPU. We could probably do something better based on analysis of the mask value based on the address space, but leave that for now.	2020-05-28 10:04:02 -04:00
Matt Arsenault	0da4353938	AMDGPU: Add baseline test for ptrmask infer address space	2020-05-28 10:04:02 -04:00

Author

SHA1

Message

Date

Matt Arsenault

4859dd4170

AMDGPU: Handle rewriting ptrmask for more address spaces

If this mask only clears bits in the low 32-bit half of a flat
pointer, these bits are always preserved in the result address
space. If the high bits are modified, they may need to be preserved
for some kind of user pointer tagging.

2020-05-28 14:35:15 -04:00

Matt Arsenault

d6671ee90c

InferAddressSpaces: Handle ptrmask intrinsic

This one is slightly odd since it counts as an address expression,
which previously could never fail. Allow the existing TTI hook to
return the value to use, and re-use it for handling how to handle
ptrmask.

Handles the no-op addrspacecasts for AMDGPU. We could probably do
something better based on analysis of the mask value based on the
address space, but leave that for now.

2020-05-28 10:04:02 -04:00

Matt Arsenault

0da4353938

AMDGPU: Add baseline test for ptrmask infer address space

2020-05-28 10:04:02 -04:00

3 Commits