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2 Commits

Author SHA1 Message Date
Matt Arsenault
707780b420 AMDGPU: Always allocate emergency stack slot at offset 0 
This allows us to ensure that 0 is never a valid pointer
to a user object, and ensures that the offset is always legal
without needing a register to access it. This comes at the cost
of usable offsets and wasted stack space.

llvm-svn: 295877
 2017-02-22 21:05:25 +00:00
Matt Arsenault
e935f05a94 AMDGPU: Fix kernel argument alignment impacting stack size 
Don't use AllocateStack because kernel arguments have nothing
to do with the stack. The ensureMaxAlignment call was still
changing the stack alignment.

llvm-svn: 273080
 2016-06-18 05:15:53 +00:00