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4 Commits

Author SHA1 Message Date
Yaxun Liu cbf647cc3a CodeGen: Fix address space of global variable 
Certain targets (e.g. amdgcn) require global variable to stay in global or constant address
space. In C or C++ global variables are emitted in the default (generic) address space.
This patch introduces virtual functions TargetCodeGenInfo::getGlobalVarAddressSpace
and TargetInfo::getConstantAddressSpace to handle this in a general approach.

It only affects IR generated for amdgcn target.

Differential Revision: https://reviews.llvm.org/D33842

llvm-svn: 307470
 2017-07-08 13:24:52 +00:00
Yaxun Liu 25d1b4341f [AMDGPU] Fix size and alignment of size_t and pointer types 
Differential Revision: https://reviews.llvm.org/D34995

llvm-svn: 307121
 2017-07-05 04:58:24 +00:00
Yaxun Liu 84744c152a CodeGen: Cast temporary variable to proper address space 
In C++ all variables are in default address space. Previously change has been
made to cast automatic variables to default address space. However that is
not sufficient since all temporary variables need to be casted to default
address space.

This patch casts all temporary variables to default address space except those
for passing indirect arguments since they are only used for load/store.

This patch only affects target having non-zero alloca address space.

Differential Revision: https://reviews.llvm.org/D33706

llvm-svn: 305711
 2017-06-19 17:03:41 +00:00
Yaxun Liu b34ec829be [OpenCL] Map default address space to alloca address space 
For OpenCL, the private address space qualifier is 0 in AST. Before this change, 0 address space qualifier
is always mapped to target address space 0. As now target private address space is specified by
alloca address space in data layout, address space qualifier 0 needs to be mapped to alloca addr space specified by the data layout.

This change has no impact on targets whose alloca addr space is 0.

With contributions from Matt Arsenault, Tony Tye and Wen-Heng (Jack) Chung

Differential Revision: https://reviews.llvm.org/D31404

llvm-svn: 299965
 2017-04-11 17:24:23 +00:00