llvm/lib/Target/Target.cpp
Chandler Carruth 7bdf6b00e0 Convert the TargetTransformInfo from an immutable pass with dynamic
interfaces which could be extracted from it, and must be provided on
construction, to a chained analysis group.

The end goal here is that TTI works much like AA -- there is a baseline
"no-op" and target independent pass which is in the group, and each
target can expose a target-specific pass in the group. These passes will
naturally chain allowing each target-specific pass to delegate to the
generic pass as needed.

In particular, this will allow a much simpler interface for passes that
would like to use TTI -- they can have a hard dependency on TTI and it
will just be satisfied by the stub implementation when that is all that
is available.

This patch is a WIP however. In particular, the "stub" pass is actually
the one and only pass, and everything there is implemented by delegating
to the target-provided interfaces. As a consequence the tools still have
to explicitly construct the pass. Switching targets to provide custom
passes and sinking the stub behavior into the NoTTI pass is the next
step.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171621 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-05 11:43:11 +00:00

117 lines
3.8 KiB
C++

//===-- Target.cpp --------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the common infrastructure (including C bindings) for
// libLLVMTarget.a, which implements target information.
//
//===----------------------------------------------------------------------===//
#include "llvm-c/Target.h"
#include "llvm-c/Initialization.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/InitializePasses.h"
#include "llvm/PassManager.h"
#include "llvm/Target/TargetLibraryInfo.h"
#include <cstring>
using namespace llvm;
void llvm::initializeTarget(PassRegistry &Registry) {
initializeDataLayoutPass(Registry);
initializeTargetLibraryInfoPass(Registry);
}
void LLVMInitializeTarget(LLVMPassRegistryRef R) {
initializeTarget(*unwrap(R));
}
LLVMTargetDataRef LLVMCreateTargetData(const char *StringRep) {
return wrap(new DataLayout(StringRep));
}
void LLVMAddTargetData(LLVMTargetDataRef TD, LLVMPassManagerRef PM) {
unwrap(PM)->add(new DataLayout(*unwrap(TD)));
}
void LLVMAddTargetLibraryInfo(LLVMTargetLibraryInfoRef TLI,
LLVMPassManagerRef PM) {
unwrap(PM)->add(new TargetLibraryInfo(*unwrap(TLI)));
}
char *LLVMCopyStringRepOfTargetData(LLVMTargetDataRef TD) {
std::string StringRep = unwrap(TD)->getStringRepresentation();
return strdup(StringRep.c_str());
}
LLVMByteOrdering LLVMByteOrder(LLVMTargetDataRef TD) {
return unwrap(TD)->isLittleEndian() ? LLVMLittleEndian : LLVMBigEndian;
}
unsigned LLVMPointerSize(LLVMTargetDataRef TD) {
return unwrap(TD)->getPointerSize(0);
}
unsigned LLVMPointerSizeForAS(LLVMTargetDataRef TD, unsigned AS) {
return unwrap(TD)->getPointerSize(AS);
}
LLVMTypeRef LLVMIntPtrType(LLVMTargetDataRef TD) {
return wrap(unwrap(TD)->getIntPtrType(getGlobalContext()));
}
LLVMTypeRef LLVMIntPtrTypeForAS(LLVMTargetDataRef TD, unsigned AS) {
return wrap(unwrap(TD)->getIntPtrType(getGlobalContext(), AS));
}
unsigned long long LLVMSizeOfTypeInBits(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
return unwrap(TD)->getTypeSizeInBits(unwrap(Ty));
}
unsigned long long LLVMStoreSizeOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
return unwrap(TD)->getTypeStoreSize(unwrap(Ty));
}
unsigned long long LLVMABISizeOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
return unwrap(TD)->getTypeAllocSize(unwrap(Ty));
}
unsigned LLVMABIAlignmentOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
return unwrap(TD)->getABITypeAlignment(unwrap(Ty));
}
unsigned LLVMCallFrameAlignmentOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
return unwrap(TD)->getCallFrameTypeAlignment(unwrap(Ty));
}
unsigned LLVMPreferredAlignmentOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
return unwrap(TD)->getPrefTypeAlignment(unwrap(Ty));
}
unsigned LLVMPreferredAlignmentOfGlobal(LLVMTargetDataRef TD,
LLVMValueRef GlobalVar) {
return unwrap(TD)->getPreferredAlignment(unwrap<GlobalVariable>(GlobalVar));
}
unsigned LLVMElementAtOffset(LLVMTargetDataRef TD, LLVMTypeRef StructTy,
unsigned long long Offset) {
StructType *STy = unwrap<StructType>(StructTy);
return unwrap(TD)->getStructLayout(STy)->getElementContainingOffset(Offset);
}
unsigned long long LLVMOffsetOfElement(LLVMTargetDataRef TD, LLVMTypeRef StructTy,
unsigned Element) {
StructType *STy = unwrap<StructType>(StructTy);
return unwrap(TD)->getStructLayout(STy)->getElementOffset(Element);
}
void LLVMDisposeTargetData(LLVMTargetDataRef TD) {
delete unwrap(TD);
}