#define LLVM_CODEGEN_MACHINEFRAMEINFO_H
#include "llvm/ADT/SmallVector.h"
-//#include "llvm/ADT/IndexedMap.h"
-#include "llvm/System/DataTypes.h"
+#include "llvm/Support/DataTypes.h"
#include <cassert>
#include <vector>
class Type;
class MachineFunction;
class MachineBasicBlock;
-class TargetFrameInfo;
+class TargetFrameLowering;
class BitVector;
/// The CalleeSavedInfo class tracks the information need to locate where a
-/// callee saved register in the current frame.
+/// callee saved register is in the current frame.
class CalleeSavedInfo {
unsigned Reg;
int FrameIdx;
/// StackProtectorIdx - The frame index for the stack protector.
int StackProtectorIdx;
+ /// FunctionContextIdx - The frame index for the function context. Used for
+ /// SjLj exceptions.
+ int FunctionContextIdx;
+
/// MaxCallFrameSize - This contains the size of the largest call frame if the
/// target uses frame setup/destroy pseudo instructions (as defined in the
/// TargetFrameInfo class). This information is important for frame pointer
/// CSIValid - Has CSInfo been set yet?
bool CSIValid;
- /// SpillObjects - A vector indicating which frame indices refer to
- /// spill slots.
- SmallVector<bool, 8> SpillObjects;
-
- /// TargetFrameInfo - Target information about frame layout.
+ /// TargetFrameLowering - Target information about frame layout.
///
- const TargetFrameInfo &TFI;
+ const TargetFrameLowering &TFI;
/// LocalFrameObjects - References to frame indices which are mapped
/// into the local frame allocation block. <FrameIdx, LocalOffset>
/// LocalFrameSize - Size of the pre-allocated local frame block.
int64_t LocalFrameSize;
- /// LocalFrameBaseOffset - The base offset from the stack pointer at
- /// function entry of the local frame blob. Set by PEI for use by
- /// target in eliminateFrameIndex().
- int64_t LocalFrameBaseOffset;
+ /// Required alignment of the local object blob, which is the strictest
+ /// alignment of any object in it.
+ unsigned LocalFrameMaxAlign;
+
+ /// Whether the local object blob needs to be allocated together. If not,
+ /// PEI should ignore the isPreAllocated flags on the stack objects and
+ /// just allocate them normally.
+ bool UseLocalStackAllocationBlock;
public:
- explicit MachineFrameInfo(const TargetFrameInfo &tfi) : TFI(tfi) {
+ explicit MachineFrameInfo(const TargetFrameLowering &tfi) : TFI(tfi) {
StackSize = NumFixedObjects = OffsetAdjustment = MaxAlignment = 0;
HasVarSizedObjects = false;
FrameAddressTaken = false;
AdjustsStack = false;
HasCalls = false;
StackProtectorIdx = -1;
+ FunctionContextIdx = -1;
MaxCallFrameSize = 0;
CSIValid = false;
LocalFrameSize = 0;
- LocalFrameBaseOffset = 0;
+ LocalFrameMaxAlign = 0;
+ UseLocalStackAllocationBlock = false;
}
/// hasStackObjects - Return true if there are any stack objects in this
int getStackProtectorIndex() const { return StackProtectorIdx; }
void setStackProtectorIndex(int I) { StackProtectorIdx = I; }
+ /// getFunctionContextIndex/setFunctionContextIndex - Return the index for the
+ /// function context object. This object is used for SjLj exceptions.
+ int getFunctionContextIndex() const { return FunctionContextIdx; }
+ void setFunctionContextIndex(int I) { FunctionContextIdx = I; }
+
/// isFrameAddressTaken - This method may be called any time after instruction
/// selection is complete to determine if there is a call to
/// \@llvm.frameaddress in this function.
/// the local object block.
int64_t getLocalFrameObjectCount() { return LocalFrameObjects.size(); }
- /// setLocalFrameBaseOffset - Set the base SP offset of the local frame
- /// blob.
- void setLocalFrameBaseOffset(int64_t o) { LocalFrameBaseOffset = o; }
-
- /// getLocalFrameBaseOffset - Get the base SP offset of the local frame
- /// blob.
- int64_t getLocalFrameBaseOffset() const { return LocalFrameBaseOffset; }
+ /// setLocalFrameSize - Set the size of the local object blob.
+ void setLocalFrameSize(int64_t sz) { LocalFrameSize = sz; }
/// getLocalFrameSize - Get the size of the local object blob.
int64_t getLocalFrameSize() const { return LocalFrameSize; }
+ /// setLocalFrameMaxAlign - Required alignment of the local object blob,
+ /// which is the strictest alignment of any object in it.
+ void setLocalFrameMaxAlign(unsigned Align) { LocalFrameMaxAlign = Align; }
+
+ /// getLocalFrameMaxAlign - Return the required alignment of the local
+ /// object blob.
+ unsigned getLocalFrameMaxAlign() const { return LocalFrameMaxAlign; }
+
+ /// getUseLocalStackAllocationBlock - Get whether the local allocation blob
+ /// should be allocated together or let PEI allocate the locals in it
+ /// directly.
+ bool getUseLocalStackAllocationBlock() {return UseLocalStackAllocationBlock;}
+
+ /// setUseLocalStackAllocationBlock - Set whether the local allocation blob
+ /// should be allocated together or let PEI allocate the locals in it
+ /// directly.
+ void setUseLocalStackAllocationBlock(bool v) {
+ UseLocalStackAllocationBlock = v;
+ }
+
/// isObjectPreAllocated - Return true if the object was pre-allocated into
/// the local block.
bool isObjectPreAllocated(int ObjectIdx) const {
assert(unsigned(ObjectIdx+NumFixedObjects) < Objects.size() &&
"Invalid Object Idx!");
Objects[ObjectIdx+NumFixedObjects].Alignment = Align;
- MaxAlignment = std::max(MaxAlignment, Align);
+ ensureMaxAlignment(Align);
}
/// NeedsStackProtector - Returns true if the object may need stack
///
unsigned getMaxAlignment() const { return MaxAlignment; }
- /// setMaxAlignment - Set the preferred alignment.
- ///
- void setMaxAlignment(unsigned Align) { MaxAlignment = Align; }
+ /// ensureMaxAlignment - Make sure the function is at least Align bytes
+ /// aligned.
+ void ensureMaxAlignment(unsigned Align) {
+ if (MaxAlignment < Align) MaxAlignment = Align;
+ }
/// AdjustsStack - Return true if this function adjusts the stack -- e.g.,
/// when calling another function. This is only valid during and after
bool isSpillSlotObjectIndex(int ObjectIdx) const {
assert(unsigned(ObjectIdx+NumFixedObjects) < Objects.size() &&
"Invalid Object Idx!");
- return Objects[ObjectIdx+NumFixedObjects].isSpillSlot;;
+ return Objects[ObjectIdx+NumFixedObjects].isSpillSlot;
}
/// isDeadObjectIndex - Returns true if the specified index corresponds to
Objects.push_back(StackObject(Size, Alignment, 0, false, isSS, MayNeedSP));
int Index = (int)Objects.size() - NumFixedObjects - 1;
assert(Index >= 0 && "Bad frame index!");
- MaxAlignment = std::max(MaxAlignment, Alignment);
+ ensureMaxAlignment(Alignment);
return Index;
}
int CreateSpillStackObject(uint64_t Size, unsigned Alignment) {
CreateStackObject(Size, Alignment, true, false);
int Index = (int)Objects.size() - NumFixedObjects - 1;
- MaxAlignment = std::max(MaxAlignment, Alignment);
+ ensureMaxAlignment(Alignment);
return Index;
}
int CreateVariableSizedObject(unsigned Alignment) {
HasVarSizedObjects = true;
Objects.push_back(StackObject(0, Alignment, 0, false, false, true));
- MaxAlignment = std::max(MaxAlignment, Alignment);
+ ensureMaxAlignment(Alignment);
return (int)Objects.size()-NumFixedObjects-1;
}
projects / oota-llvm.git / blobdiff