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Support creating a constant pool value for a machine basic block.

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This is used when we want to take the address of a machine basic block, but it's
not associated with a BB in LLVM IR.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140823 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling 2011-09-29 23:48:44 +00:00
parent 48105286cb
commit 4dd9b091cc
2 changed files with 30 additions and 2 deletions
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18
lib/Target/ARM/ARMConstantPoolValue.cpp
View File

@ -17,6 +17,7 @@
#include "llvm/Constants.h"
#include "llvm/GlobalValue.h"
#include "llvm/Type.h"
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/Support/raw_ostream.h"
#include <cstdlib>
using namespace llvm;
@ -30,6 +31,17 @@ ARMConstantPoolValue::ARMConstantPoolValue(const Constant *cval, unsigned id,
CVal(cval), S(NULL), LabelId(id), Kind(K), PCAdjust(PCAdj),
Modifier(Modif), AddCurrentAddress(AddCA) {}
ARMConstantPoolValue::ARMConstantPoolValue(LLVMContext &C,
const MachineBasicBlock *mbb,
unsigned id,
ARMCP::ARMCPKind K,
unsigned char PCAdj,
ARMCP::ARMCPModifier Modif,
bool AddCA)
: MachineConstantPoolValue((Type*)Type::getInt8PtrTy(C)),
CVal(NULL), MBB(mbb), S(NULL), LabelId(id), Kind(K), PCAdjust(PCAdj),
Modifier(Modif), AddCurrentAddress(AddCA) {}
ARMConstantPoolValue::ARMConstantPoolValue(LLVMContext &C,
const char *s, unsigned id,
unsigned char PCAdj,
@ -53,6 +65,10 @@ const BlockAddress *ARMConstantPoolValue::getBlockAddress() const {
return dyn_cast_or_null<BlockAddress>(CVal);
}
const MachineBasicBlock *ARMConstantPoolValue::getMBB() const {
return MBB;
}
static bool CPV_streq(const char *S1, const char *S2) {
if (S1 == S2)
return true;
@ -119,6 +135,8 @@ void ARMConstantPoolValue::dump() const {
void ARMConstantPoolValue::print(raw_ostream &O) const {
if (CVal)
O << CVal->getName();
else if (MBB)
O << "";
else
O << S;
if (Modifier) O << "(" << getModifierText() << ")";

14
lib/Target/ARM/ARMConstantPoolValue.h
View File

@ -20,17 +20,19 @@
namespace llvm {
class Constant;
class BlockAddress;
class Constant;
class GlobalValue;
class LLVMContext;
class MachineBasicBlock;
namespace ARMCP {
enum ARMCPKind {
CPValue,
CPExtSymbol,
CPBlockAddress,
CPLSDA
CPLSDA,
CPMachineBasicBlock
};
enum ARMCPModifier {
@ -48,6 +50,7 @@ namespace ARMCP {
/// instruction and the constant being loaded, i.e. (&GV-(LPIC+8)).
class ARMConstantPoolValue : public MachineConstantPoolValue {
const Constant *CVal; // Constant being loaded.
const MachineBasicBlock *MBB; // MachineBasicBlock being loaded.
const char *S; // ExtSymbol being loaded.
unsigned LabelId; // Label id of the load.
ARMCP::ARMCPKind Kind; // Kind of constant.
@ -62,6 +65,11 @@ public:
unsigned char PCAdj = 0,
ARMCP::ARMCPModifier Modifier = ARMCP::no_modifier,
bool AddCurrentAddress = false);
ARMConstantPoolValue(LLVMContext &C, const MachineBasicBlock *mbb,unsigned id,
ARMCP::ARMCPKind Kind = ARMCP::CPValue,
unsigned char PCAdj = 0,
ARMCP::ARMCPModifier Modifier = ARMCP::no_modifier,
bool AddCurrentAddress = false);
ARMConstantPoolValue(LLVMContext &C, const char *s, unsigned id,
unsigned char PCAdj = 0,
ARMCP::ARMCPModifier Modifier = ARMCP::no_modifier,
@ -73,6 +81,7 @@ public:
const GlobalValue *getGV() const;
const char *getSymbol() const { return S; }
const BlockAddress *getBlockAddress() const;
const MachineBasicBlock *getMBB() const;
ARMCP::ARMCPModifier getModifier() const { return Modifier; }
const char *getModifierText() const {
switch (Modifier) {
@ -95,6 +104,7 @@ public:
bool isExtSymbol() const { return Kind == ARMCP::CPExtSymbol; }
bool isBlockAddress() { return Kind == ARMCP::CPBlockAddress; }
bool isLSDA() { return Kind == ARMCP::CPLSDA; }
bool isMachineBasicBlock() { return Kind == ARMCP::CPMachineBasicBlock; }
virtual unsigned getRelocationInfo() const { return 2; }