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AMDGPU: Update private null pointer value in documentation

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Private pointers used to workaround IR semantics by artifically
reserving an object at offset 0 so no user object would be allocated
there. Since alloca now uses a non-0 address space, that workaround is
unnecssary and 0 can be treated as a valid pointer.
This commit is contained in:
Matt Arsenault 2020-06-18 17:24:12 -04:00
parent 1789f18d3a
commit 1529ca40cf
1 changed files with 2 additions and 2 deletions
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docs/AMDGPUUsage.rst
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@ -365,8 +365,8 @@ supported for the ``amdgcn`` target.
Region 2 N/A GDS 32 *not implemented for AMDHSA*
Local 3 group LDS 32 0xFFFFFFFF
Constant 4 constant *same as global* 64 0x0000000000000000
Private 5 private scratch 32 0x00000000
Constant 32-bit 6 *TODO*
Private 5 private scratch 32 0xFFFFFFFF
Constant 32-bit 6 *TODO* 0x00000000
Buffer Fat Pointer (experimental) 7 *TODO*
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