[AMDGPU] Get address space mapping by target triple environment

As we introduced target triple environment amdgiz and amdgizcl, the address
space values are no longer enums. We have to decide the value by target triple.

The basic idea is to use struct AMDGPUAS to represent address space values.
For address space values which are not depend on target triple, use static
const members, so that they don't occupy extra memory space and is equivalent
to a compile time constant.

Since the struct is lightweight and cheap, it can be created on the fly at
the point of usage. Or it can be added as member to a pass and created at
the beginning of the run* function.

Differential Revision: https://reviews.llvm.org/D31284

llvm-svn: 298846

1 files changed, 2 insertions, 0 deletions

diff --git a/llvm/lib/Target/AMDGPU/MCTargetDesc/AMDGPUCodeObjectMetadataStreamer.h b/llvm/lib/Target/AMDGPU/MCTargetDesc/AMDGPUCodeObjectMetadataStreamer.h
index 12d4c5e5dd5..8d4c51763f6 100644
--- a/llvm/lib/Target/AMDGPU/MCTargetDesc/AMDGPUCodeObjectMetadataStreamer.h
+++ b/llvm/lib/Target/AMDGPU/MCTargetDesc/AMDGPUCodeObjectMetadataStreamer.h
@@ -16,6 +16,7 @@
 #ifndef LLVM_LIB_TARGET_AMDGPU_MCTARGETDESC_AMDGPUCODEOBJECTMETADATASTREAMER_H
 #define LLVM_LIB_TARGET_AMDGPU_MCTARGETDESC_AMDGPUCODEOBJECTMETADATASTREAMER_H
 
+#include "AMDGPU.h"
 #include "AMDGPUCodeObjectMetadata.h"
 #include "AMDKernelCodeT.h"
 #include "llvm/ADT/StringRef.h"
@@ -36,6 +37,7 @@ namespace CodeObject {
 class MetadataStreamer final {
 private:
   Metadata CodeObjectMetadata;
+  AMDGPUAS AMDGPUASI;
 
   void dump(StringRef YamlString) const;