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Differential D81247

Fix a typo in AMDGPU docs
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Authored by madhur13490 on Jun 5 2020, 3:24 AM.

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t-tye
arsenm
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rGbca413b036bf: Fix a typo in AMDGPU docs

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madhur13490 created this revision.Jun 5 2020, 3:24 AM
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Harbormaster failed remote builds in B59213: Diff 268729!Jun 5 2020, 4:22 AM
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This revision is now accepted and ready to land.Jun 5 2020, 6:08 AM
Closed by commit rGbca413b036bf: Fix a typo in AMDGPU docs (authored by madhur13490). · Explain WhyJun 5 2020, 6:37 AM
This revision was automatically updated to reflect the committed changes.

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Diff 268729

llvm/docs/AMDGPUUsage.rst

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2. Work-group Id registers X, Y, Z are set by ADC which supports any 2. Work-group Id registers X, Y, Z are set by ADC which supports any
combination including none. combination including none.
3. Scratch Wavefront Offset is set by SPI in a per wavefront basis which is why 3. Scratch Wavefront Offset is set by SPI in a per wavefront basis which is why
its value cannot be included with the flat scratch init value which is per its value cannot be included with the flat scratch init value which is per
queue. queue.
4. The VGPRs are set by SPI which only supports specifying either (X), (X, Y) 4. The VGPRs are set by SPI which only supports specifying either (X), (X, Y)
or (X, Y, Z). or (X, Y, Z).
Flat Scratch register pair are adjacent SGRRs so they can be moved as a 64-bit Flat Scratch register pair are adjacent SGPRs so they can be moved as a 64-bit
value to the hardware required SGPRn-3 and SGPRn-4 respectively. value to the hardware required SGPRn-3 and SGPRn-4 respectively.
The global segment can be accessed either using buffer instructions (GFX6 which The global segment can be accessed either using buffer instructions (GFX6 which
has V# 64-bit address support), flat instructions (GFX7-GFX10), or global has V# 64-bit address support), flat instructions (GFX7-GFX10), or global
instructions (GFX9-GFX10). instructions (GFX9-GFX10).
If buffer operations are used, then the compiler can generate a V# with the If buffer operations are used, then the compiler can generate a V# with the
following properties: following properties:
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