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Merge pull request #3491 from alyssarosenzweig/rclse/waw

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RCLSE: Optimize store-after-store
This commit is contained in:
Ryan Houdek authored and GitHub committed 2024-03-14 03:23:05 -07:00
2 parents 8a3d08e1d8 ed59f73a65
commit ca6b2e43e6
14 files changed
+1934 -2089
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FEXCore/Source/Interface/Core/JIT/Arm64/EncryptionOps.cpp
+1 -1
View File
@@ -201,7 +201,7 @@ DEF_OP(VSha256U0) {
else {
mov(VTMP1.Q(), Src1.Q());
sha256su0(VTMP1, Src2);
mov(Dst.Q(), Src1.Q());
mov(Dst.Q(), VTMP1.Q());
}
}
FEXCore/Source/Interface/IR/Passes/DeadContextStoreElimination.cpp
+12 -2
View File
@@ -547,10 +547,20 @@ bool RCLSE::ClassifyContextLoad(FEXCore::IR::IREmitter *IREmit, ContextInfo *Loc
bool RCLSE::ClassifyContextStore(FEXCore::IR::IREmitter *IREmit, ContextInfo *LocalInfo, FEXCore::IR::RegisterClassType Class, uint32_t Offset, uint8_t Size, FEXCore::IR::OrderedNode *CodeNode, FEXCore::IR::OrderedNode *ValueNode) {
auto Info = FindMemberInfo(LocalInfo, Offset, Size);
ContextMemberInfo PreviousMemberInfoCopy = *Info;
RecordAccess(Info, Class, Offset, Size, LastAccessType::WRITE, ValueNode,
CodeNode);
// TODO: Optimize redundant stores.
// ContextMemberInfo PreviousMemberInfoCopy = *Info;
if (PreviousMemberInfoCopy.AccessRegClass == Info->AccessRegClass &&
PreviousMemberInfoCopy.AccessOffset == Info->AccessOffset &&
PreviousMemberInfoCopy.AccessSize == Size &&
PreviousMemberInfoCopy.Accessed == LastAccessType::WRITE) {
// This optimizes redundant stores with no intervening load
IREmit->Remove(PreviousMemberInfoCopy.StoreNode);
return true;
}
// TODO: Optimize the case of partial stores.
return false;
}