Implement Value* tracking for loads and stores in the selection DAG. This enables one to use alias analysis in the backends.
(TRUNK)Stores and (EXT|ZEXT|SEXT)Loads have an extra SDOperand which is a SrcValueSDNode which contains the Value*. Note that if the operation is introduced by the backend, it will still have the operand, but the value* will be null.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21599 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Alpha/AlphaISelPattern.cpp b/lib/Target/Alpha/AlphaISelPattern.cpp
index 450de9f..e2e863d 100644
--- a/lib/Target/Alpha/AlphaISelPattern.cpp
+++ b/lib/Target/Alpha/AlphaISelPattern.cpp
@@ -229,7 +229,7 @@
//from this parameter
SDOperand FIN = DAG.getFrameIndex(FI, MVT::i64);
argt = newroot = DAG.getLoad(getValueType(I->getType()),
- DAG.getEntryNode(), FIN);
+ DAG.getEntryNode(), FIN, DAG.getSrcValue(NULL));
}
++count;
LS.push_back(newroot.getValue(1));
@@ -245,14 +245,14 @@
SDOperand argt = DAG.getCopyFromReg(Vreg, MVT::i64, Chain);
int FI = MFI->CreateFixedObject(8, -8 * (6 - i));
SDOperand SDFI = DAG.getFrameIndex(FI, MVT::i64);
- LS.push_back(DAG.getNode(ISD::STORE, MVT::Other, Chain, argt, SDFI));
+ LS.push_back(DAG.getNode(ISD::STORE, MVT::Other, Chain, argt, SDFI, DAG.getSrcValue(NULL)));
Vreg = MF.getSSARegMap()->createVirtualRegister(getRegClassFor(MVT::f64));
BuildMI(&BB, Alpha::CPYS, 2, Vreg).addReg(args_float[i]).addReg(args_float[i]);
argt = DAG.getCopyFromReg(Vreg, MVT::f64, Chain);
FI = MFI->CreateFixedObject(8, - 8 * (12 - i));
SDFI = DAG.getFrameIndex(FI, MVT::i64);
- LS.push_back(DAG.getNode(ISD::STORE, MVT::Other, Chain, argt, SDFI));
+ LS.push_back(DAG.getNode(ISD::STORE, MVT::Other, Chain, argt, SDFI, DAG.getSrcValue(NULL)));
}
// If the function takes variable number of arguments, make a frame index for
diff --git a/lib/Target/IA64/IA64ISelPattern.cpp b/lib/Target/IA64/IA64ISelPattern.cpp
index 8580feb..c3675a0 100644
--- a/lib/Target/IA64/IA64ISelPattern.cpp
+++ b/lib/Target/IA64/IA64ISelPattern.cpp
@@ -223,7 +223,7 @@
//from this parameter
SDOperand FIN = DAG.getFrameIndex(FI, MVT::i64);
argt = newroot = DAG.getLoad(getValueType(I->getType()),
- DAG.getEntryNode(), FIN);
+ DAG.getEntryNode(), FIN, DAG.getSrcValue(NULL));
}
++count;
DAG.setRoot(newroot.getValue(1));
@@ -378,7 +378,7 @@
MVT::ValueType ArgVT = getValueType(ArgTy);
SDOperand Result;
if (!isVANext) {
- Result = DAG.getLoad(ArgVT, DAG.getEntryNode(), VAList);
+ Result = DAG.getLoad(ArgVT, DAG.getEntryNode(), VAList, DAG.getSrcValue(NULL));
} else {
unsigned Amt;
if (ArgVT == MVT::i32 || ArgVT == MVT::f32)
diff --git a/lib/Target/PowerPC/PPC64ISelPattern.cpp b/lib/Target/PowerPC/PPC64ISelPattern.cpp
index e5c2f40..1e72bf0 100644
--- a/lib/Target/PowerPC/PPC64ISelPattern.cpp
+++ b/lib/Target/PowerPC/PPC64ISelPattern.cpp
@@ -176,7 +176,7 @@
SDOperand FIN = DAG.getFrameIndex(FI, MVT::i64);
FIN = DAG.getNode(ISD::ADD, MVT::i64, FIN,
DAG.getConstant(SubregOffset, MVT::i64));
- argt = newroot = DAG.getLoad(ObjectVT, DAG.getEntryNode(), FIN);
+ argt = newroot = DAG.getLoad(ObjectVT, DAG.getEntryNode(), FIN, DAG.getSrcValue(NULL));
}
// Every 4 bytes of argument space consumes one of the GPRs available for
@@ -204,7 +204,7 @@
BuildMI(&BB, PPC::IMPLICIT_DEF, 0, GPR[GPR_idx]);
SDOperand Val = DAG.getCopyFromReg(GPR[GPR_idx], MVT::i64, DAG.getRoot());
SDOperand Store = DAG.getNode(ISD::STORE, MVT::Other, Val.getValue(1),
- Val, FIN);
+ Val, FIN, DAG.getSrcValue(NULL));
MemOps.push_back(Store);
// Increment the address by eight for the next argument to store
SDOperand PtrOff = DAG.getConstant(8, getPointerTy());
@@ -285,7 +285,7 @@
--GPR_remaining;
} else {
MemOps.push_back(DAG.getNode(ISD::STORE, MVT::Other, Chain,
- Args[i].first, PtrOff));
+ Args[i].first, PtrOff, DAG.getSrcValue(NULL)));
}
ArgOffset += 8;
break;
@@ -296,11 +296,11 @@
--FPR_remaining;
if (isVarArg) {
SDOperand Store = DAG.getNode(ISD::STORE, MVT::Other, Chain,
- Args[i].first, PtrOff);
+ Args[i].first, PtrOff, DAG.getSrcValue(NULL));
MemOps.push_back(Store);
// Float varargs are always shadowed in available integer registers
if (GPR_remaining > 0) {
- SDOperand Load = DAG.getLoad(MVT::i64, Store, PtrOff);
+ SDOperand Load = DAG.getLoad(MVT::i64, Store, PtrOff, DAG.getSrcValue(NULL));
MemOps.push_back(Load);
args_to_use.push_back(Load);
--GPR_remaining;
@@ -315,7 +315,7 @@
}
} else {
MemOps.push_back(DAG.getNode(ISD::STORE, MVT::Other, Chain,
- Args[i].first, PtrOff));
+ Args[i].first, PtrOff, DAG.getSrcValue(NULL)));
}
ArgOffset += 8;
break;
@@ -351,7 +351,7 @@
MVT::ValueType ArgVT = getValueType(ArgTy);
SDOperand Result;
if (!isVANext) {
- Result = DAG.getLoad(ArgVT, DAG.getEntryNode(), VAList);
+ Result = DAG.getLoad(ArgVT, DAG.getEntryNode(), VAList, DAG.getSrcValue(NULL));
} else {
Result = DAG.getNode(ISD::ADD, VAList.getValueType(), VAList,
DAG.getConstant(8, VAList.getValueType()));
diff --git a/lib/Target/PowerPC/PPCISelPattern.cpp b/lib/Target/PowerPC/PPCISelPattern.cpp
index a516a8b..40a2610 100644
--- a/lib/Target/PowerPC/PPCISelPattern.cpp
+++ b/lib/Target/PowerPC/PPCISelPattern.cpp
@@ -164,7 +164,7 @@
} else {
int FI = MFI->CreateFixedObject(4, ArgOffset+4);
SDOperand FIN = DAG.getFrameIndex(FI, MVT::i32);
- argLo = DAG.getLoad(MVT::i32, DAG.getEntryNode(), FIN);
+ argLo = DAG.getLoad(MVT::i32, DAG.getEntryNode(), FIN, DAG.getSrcValue(NULL));
}
// Build the outgoing arg thingy
argt = DAG.getNode(ISD::BUILD_PAIR, MVT::i64, argLo, argHi);
@@ -199,7 +199,7 @@
SDOperand FIN = DAG.getFrameIndex(FI, MVT::i32);
FIN = DAG.getNode(ISD::ADD, MVT::i32, FIN,
DAG.getConstant(SubregOffset, MVT::i32));
- argt = newroot = DAG.getLoad(ObjectVT, DAG.getEntryNode(), FIN);
+ argt = newroot = DAG.getLoad(ObjectVT, DAG.getEntryNode(), FIN, DAG.getSrcValue(NULL));
}
// Every 4 bytes of argument space consumes one of the GPRs available for
@@ -229,7 +229,7 @@
MF.addLiveIn(GPR[GPR_idx]);
SDOperand Val = DAG.getCopyFromReg(GPR[GPR_idx], MVT::i32, DAG.getRoot());
SDOperand Store = DAG.getNode(ISD::STORE, MVT::Other, Val.getValue(1),
- Val, FIN);
+ Val, FIN, DAG.getSrcValue(NULL));
MemOps.push_back(Store);
// Increment the address by four for the next argument to store
SDOperand PtrOff = DAG.getConstant(4, getPointerTy());
@@ -343,7 +343,7 @@
--GPR_remaining;
} else {
MemOps.push_back(DAG.getNode(ISD::STORE, MVT::Other, Chain,
- Args[i].first, PtrOff));
+ Args[i].first, PtrOff, DAG.getSrcValue(NULL)));
}
ArgOffset += 4;
break;
@@ -365,11 +365,11 @@
SDOperand ConstFour = DAG.getConstant(4, getPointerTy());
PtrOff = DAG.getNode(ISD::ADD, MVT::i32, PtrOff, ConstFour);
MemOps.push_back(DAG.getNode(ISD::STORE, MVT::Other, Chain,
- Lo, PtrOff));
+ Lo, PtrOff, DAG.getSrcValue(NULL)));
}
} else {
MemOps.push_back(DAG.getNode(ISD::STORE, MVT::Other, Chain,
- Args[i].first, PtrOff));
+ Args[i].first, PtrOff, DAG.getSrcValue(NULL)));
}
ArgOffset += 8;
break;
@@ -380,11 +380,11 @@
--FPR_remaining;
if (isVarArg) {
SDOperand Store = DAG.getNode(ISD::STORE, MVT::Other, Chain,
- Args[i].first, PtrOff);
+ Args[i].first, PtrOff, DAG.getSrcValue(NULL));
MemOps.push_back(Store);
// Float varargs are always shadowed in available integer registers
if (GPR_remaining > 0) {
- SDOperand Load = DAG.getLoad(MVT::i32, Store, PtrOff);
+ SDOperand Load = DAG.getLoad(MVT::i32, Store, PtrOff, DAG.getSrcValue(NULL));
MemOps.push_back(Load);
args_to_use.push_back(Load);
--GPR_remaining;
@@ -392,7 +392,7 @@
if (GPR_remaining > 0 && MVT::f64 == ArgVT) {
SDOperand ConstFour = DAG.getConstant(4, getPointerTy());
PtrOff = DAG.getNode(ISD::ADD, MVT::i32, PtrOff, ConstFour);
- SDOperand Load = DAG.getLoad(MVT::i32, Store, PtrOff);
+ SDOperand Load = DAG.getLoad(MVT::i32, Store, PtrOff, DAG.getSrcValue(NULL));
MemOps.push_back(Load);
args_to_use.push_back(Load);
--GPR_remaining;
@@ -412,7 +412,7 @@
}
} else {
MemOps.push_back(DAG.getNode(ISD::STORE, MVT::Other, Chain,
- Args[i].first, PtrOff));
+ Args[i].first, PtrOff, DAG.getSrcValue(NULL)));
}
ArgOffset += (ArgVT == MVT::f32) ? 4 : 8;
break;
@@ -448,7 +448,7 @@
MVT::ValueType ArgVT = getValueType(ArgTy);
SDOperand Result;
if (!isVANext) {
- Result = DAG.getLoad(ArgVT, DAG.getEntryNode(), VAList);
+ Result = DAG.getLoad(ArgVT, DAG.getEntryNode(), VAList, DAG.getSrcValue(NULL));
} else {
unsigned Amt;
if (ArgVT == MVT::i32 || ArgVT == MVT::f32)
diff --git a/lib/Target/X86/X86ISelPattern.cpp b/lib/Target/X86/X86ISelPattern.cpp
index e92ef0a..bb9e901 100644
--- a/lib/Target/X86/X86ISelPattern.cpp
+++ b/lib/Target/X86/X86ISelPattern.cpp
@@ -141,7 +141,7 @@
// dead loads.
SDOperand ArgValue;
if (!I->use_empty())
- ArgValue = DAG.getLoad(ObjectVT, DAG.getEntryNode(), FIN);
+ ArgValue = DAG.getLoad(ObjectVT, DAG.getEntryNode(), FIN, DAG.getSrcValue(NULL));
else {
if (MVT::isInteger(ObjectVT))
ArgValue = DAG.getConstant(0, ObjectVT);
@@ -239,13 +239,13 @@
case MVT::i32:
case MVT::f32:
Stores.push_back(DAG.getNode(ISD::STORE, MVT::Other, Chain,
- Args[i].first, PtrOff));
+ Args[i].first, PtrOff, DAG.getSrcValue(NULL)));
ArgOffset += 4;
break;
case MVT::i64:
case MVT::f64:
Stores.push_back(DAG.getNode(ISD::STORE, MVT::Other, Chain,
- Args[i].first, PtrOff));
+ Args[i].first, PtrOff, DAG.getSrcValue(NULL)));
ArgOffset += 8;
break;
}
@@ -278,7 +278,7 @@
MVT::ValueType ArgVT = getValueType(ArgTy);
SDOperand Result;
if (!isVANext) {
- Result = DAG.getLoad(ArgVT, DAG.getEntryNode(), VAList);
+ Result = DAG.getLoad(ArgVT, DAG.getEntryNode(), VAList, DAG.getSrcValue(NULL));
} else {
unsigned Amt;
if (ArgVT == MVT::i32)
@@ -312,7 +312,7 @@
if (!isFrameAddress)
// Just load the return address
- Result = DAG.getLoad(MVT::i32, DAG.getEntryNode(), RetAddrFI);
+ Result = DAG.getLoad(MVT::i32, DAG.getEntryNode(), RetAddrFI, DAG.getSrcValue(NULL));
else
Result = DAG.getNode(ISD::SUB, MVT::i32, RetAddrFI,
DAG.getConstant(4, MVT::i32));