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fix a really subtle bug in the cross section of aliases and TLS:

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the SelectionDAG::getGlobalAddress function properly looks through
aliases to determine thread-localness, but then passes the GV* down
to GlobalAddressSDNode::GlobalAddressSDNode which does not.  Instead
of passing down isTarget, just pass down the predetermined node
opcode.  This fixes some assertions with out of tree changes I'm 
working on.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74325 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2009-06-26 21:14:05 +00:00
parent 24062ac5be
commit 505e982040
2 changed files with 4 additions and 10 deletions
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2
include/llvm/CodeGen/SelectionDAGNodes.h
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@ -1821,7 +1821,7 @@ class GlobalAddressSDNode : public SDNode {
int64_t Offset;
unsigned char TargetFlags;
friend class SelectionDAG;
GlobalAddressSDNode(bool isTarget, const GlobalValue *GA, MVT VT,
GlobalAddressSDNode(unsigned Opc, const GlobalValue *GA, MVT VT,
int64_t o, unsigned char TargetFlags);
public:

12
lib/CodeGen/SelectionDAG/SelectionDAG.cpp
View File

@ -996,7 +996,7 @@ SDValue SelectionDAG::getGlobalAddress(const GlobalValue *GV,
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
return SDValue(E, 0);
SDNode *N = NodeAllocator.Allocate<GlobalAddressSDNode>();
new (N) GlobalAddressSDNode(isTargetGA, GV, VT, Offset, TargetFlags);
new (N) GlobalAddressSDNode(Opc, GV, VT, Offset, TargetFlags);
CSEMap.InsertNode(N, IP);
AllNodes.push_back(N);
return SDValue(N, 0);
@ -4935,15 +4935,9 @@ HandleSDNode::~HandleSDNode() {
DropOperands();
}
GlobalAddressSDNode::GlobalAddressSDNode(bool isTarget, const GlobalValue *GA,
GlobalAddressSDNode::GlobalAddressSDNode(unsigned Opc, const GlobalValue *GA,
MVT VT, int64_t o, unsigned char TF)
: SDNode(isa<GlobalVariable>(GA) &&
cast<GlobalVariable>(GA)->isThreadLocal() ?
// Thread Local
(isTarget ? ISD::TargetGlobalTLSAddress : ISD::GlobalTLSAddress) :
// Non Thread Local
(isTarget ? ISD::TargetGlobalAddress : ISD::GlobalAddress),
DebugLoc::getUnknownLoc(), getSDVTList(VT)),
: SDNode(Opc, DebugLoc::getUnknownLoc(), getSDVTList(VT)),
Offset(o), TargetFlags(TF) {
TheGlobal = const_cast<GlobalValue*>(GA);
}