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Distinquish stack slots from other stack objects. They (and fixed objects) get FixedStack PseudoSourceValues.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84326 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2009-10-17 09:20:14 +00:00
parent a8e6542610
commit 491f54f1fd
7 changed files with 35 additions and 12 deletions
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22
include/llvm/CodeGen/MachineFrameInfo.h
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@@ -102,8 +102,14 @@ class MachineFrameInfo {
// default, fixed objects are immutable unless marked otherwise.
bool isImmutable;
StackObject(uint64_t Sz, unsigned Al, int64_t SP = 0, bool IM = false)
: SPOffset(SP), Size(Sz), Alignment(Al), isImmutable(IM) {}
// isSpillSlot - If true, the stack object is used as spill slot. It
// cannot alias any other memory objects.
bool isSpillSlot;
StackObject(uint64_t Sz, unsigned Al, int64_t SP = 0, bool IM = false,
bool isSS = false)
: SPOffset(SP), Size(Sz), Alignment(Al), isImmutable(IM),
isSpillSlot(isSS) {}
};
/// Objects - The list of stack objects allocated...
@@ -352,6 +358,14 @@ public:
return Objects[ObjectIdx+NumFixedObjects].isImmutable;
}
/// isSpillSlotObjectIndex - Returns true if the specified index corresponds
/// to a spill slot..
bool isSpillSlotObjectIndex(int ObjectIdx) const {
assert(unsigned(ObjectIdx+NumFixedObjects) < Objects.size() &&
"Invalid Object Idx!");
return Objects[ObjectIdx+NumFixedObjects].isSpillSlot;;
}
/// isDeadObjectIndex - Returns true if the specified index corresponds to
/// a dead object.
bool isDeadObjectIndex(int ObjectIdx) const {
@@ -363,9 +377,9 @@ public:
/// CreateStackObject - Create a new statically sized stack object, returning
/// a nonnegative identifier to represent it.
///
int CreateStackObject(uint64_t Size, unsigned Alignment) {
int CreateStackObject(uint64_t Size, unsigned Alignment, bool isSS = false) {
assert(Size != 0 && "Cannot allocate zero size stack objects!");
Objects.push_back(StackObject(Size, Alignment));
Objects.push_back(StackObject(Size, Alignment, 0, false, isSS));
return (int)Objects.size()-NumFixedObjects-1;
}