6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-06-27 14:24:40 +00:00
Code Issues Projects Releases Wiki Activity

[StatepointLowering] Support of the gc.relocates for invoke statepoints.

Browse Source 
This change implements support for lowering of the gc.relocates tied to the invoke statepoint.
This is acomplished by storing frame indices of the lowered values in "StatepointRelocatedValues" map inside FunctionLoweringInfo instead of storing them in per-basic block structure StatepointLowering.
After this change StatepointLowering is used only during "LowerStatepoint" call and it is not necessary to store it as a field in SelectionDAGBuilder anymore.

Differential Revision: http://reviews.llvm.org/D7798


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@237786 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Igor Laevsky
2015-05-20 11:37:25 +00:00
parent 362b8e5b52
commit efab5a1dfa
5 changed files with 252 additions and 58 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
include/llvm/CodeGen/FunctionLoweringInfo.h
View File

@ -18,6 +18,7 @@
#include "llvm/ADT/APInt.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/IndexedMap.h"
#include "llvm/ADT/Optional.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/CodeGen/ISDOpcodes.h"
@ -73,6 +74,16 @@ public:
/// cross-basic-block values.
DenseMap<const Value*, unsigned> ValueMap;
// Keep track of frame indices allocated for statepoints as they could be used
// across basic block boundaries.
// Key of the map is statepoint instruction, value is a map from spilled
// llvm Value to the optional stack stack slot index.
// If optional is unspecified it means that we have visited this value
// but didn't spill it.
typedef DenseMap<const Value*, Optional<int>> StatepointSpilledValueMapTy;
DenseMap<const Instruction*, StatepointSpilledValueMapTy>
StatepointRelocatedValues;
/// StaticAllocaMap - Keep track of frame indices for fixed sized allocas in
/// the entry block. This allows the allocas to be efficiently referenced
/// anywhere in the function.