greenplumn llvmjit_wrap 源码
greenplumn llvmjit_wrap 代码
文件路径：/src/backend/jit/llvm/llvmjit_wrap.cpp
/*-------------------------------------------------------------------------
*
* llvmjit_wrap.cpp
* Parts of the LLVM interface not (yet) exposed to C.
*
* Copyright (c) 2016-2019, PostgreSQL Global Development Group
*
* IDENTIFICATION
* src/backend/lib/llvm/llvmjit_wrap.cpp
*
*-------------------------------------------------------------------------
*/
extern "C"
{
#include "postgres.h"
}
#include <llvm/MC/SubtargetFeature.h>
#include <llvm/Support/Host.h>
#include "jit/llvmjit.h"
/*
* C-API extensions.
*/
#if defined(HAVE_DECL_LLVMGETHOSTCPUNAME) && !HAVE_DECL_LLVMGETHOSTCPUNAME
char *LLVMGetHostCPUName(void) {
return strdup(llvm::sys::getHostCPUName().data());
}
#endif
#if defined(HAVE_DECL_LLVMGETHOSTCPUFEATURES) && !HAVE_DECL_LLVMGETHOSTCPUFEATURES
char *LLVMGetHostCPUFeatures(void) {
llvm::SubtargetFeatures Features;
llvm::StringMap<bool> HostFeatures;
if (llvm::sys::getHostCPUFeatures(HostFeatures))
for (auto &F : HostFeatures)
Features.AddFeature(F.first(), F.second);
return strdup(Features.getString().c_str());
}
#endif
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