[llvm] r265500 - AMDGPU: Document address space mapping

[Tom Stellard via llvm-commits]

Author: tstellar
Date: Tue Apr  5 20:29:19 2016
New Revision: 265500

URL: http://llvm.org/viewvc/llvm-project?rev=265500&view=rev
Log:
AMDGPU: Document address space mapping

Summary:
Address space mapping is described in lib/Target/AMDGPU/AMDGPU.h in
Doxygen comments. This patch adds the description to user guide for
AMDGPU back-end.

Patch By: Vedran Miletić

Reviewers: tstellarAMD, arsenm

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D17046

Modified:
    llvm/trunk/docs/AMDGPUUsage.rst

Modified: llvm/trunk/docs/AMDGPUUsage.rst
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/docs/AMDGPUUsage.rst?rev=265500&r1=265499&r2=265500&view=diff
==============================================================================
--- llvm/trunk/docs/AMDGPUUsage.rst (original)
+++ llvm/trunk/docs/AMDGPUUsage.rst Tue Apr  5 20:29:19 2016
@@ -9,6 +9,29 @@ The AMDGPU back-end provides ISA code ge
 the R600 family up until the current Volcanic Islands (GCN Gen 3).
 
 
+Conventions
+===========
+
+Address Spaces
+--------------
+
+The AMDGPU back-end uses the following address space mapping:
+
+   ============= ============================================
+   Address Space Memory Space
+   ============= ============================================
+   0             Private
+   1             Global
+   2             Constant
+   3             Local
+   4             Generic (Flat)
+   5             Region
+   ============= ============================================
+
+The terminology in the table, aside from the region memory space, is from the
+OpenCL standard.
+
+
 Assembler
 =========