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| author | Chris Lattner <sabre@nondot.org> | 2010-09-21 03:37:00 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2010-09-21 03:37:00 +0000 |
| commit | bb0a1c44bf614faa101673b0322a84d7581cf5bb (patch) | |
| tree | 598695692684825bcc26e792e3e40f60df45d5d4 /llvm/lib | |
| parent | 7108ece0771a813451ea3ee2390aee1ab26451dd (diff) | |
| download | bcm5719-llvm-bb0a1c44bf614faa101673b0322a84d7581cf5bb.tar.gz bcm5719-llvm-bb0a1c44bf614faa101673b0322a84d7581cf5bb.zip | |
fix rdar://8453210, a crash handling a call through a GS relative load.
For now, just disable folding the load into the call.
llvm-svn: 114386
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Target/X86/X86ISelDAGToDAG.cpp | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/llvm/lib/Target/X86/X86ISelDAGToDAG.cpp b/llvm/lib/Target/X86/X86ISelDAGToDAG.cpp index 0e650c06ab0..ad515414a65 100644 --- a/llvm/lib/Target/X86/X86ISelDAGToDAG.cpp +++ b/llvm/lib/Target/X86/X86ISelDAGToDAG.cpp @@ -403,6 +403,12 @@ static bool isCalleeLoad(SDValue Callee, SDValue &Chain, bool HasCallSeq) { LD->getExtensionType() != ISD::NON_EXTLOAD) return false; + // FIXME: Calls can't fold loads through segment registers yet. + if (const Value *Src = LD->getSrcValue()) + if (const PointerType *PT = dyn_cast<PointerType>(Src->getType())) + if (PT->getAddressSpace() >= 256) + return false; + // Now let's find the callseq_start. while (HasCallSeq && Chain.getOpcode() != ISD::CALLSEQ_START) { if (!Chain.hasOneUse()) @@ -563,7 +569,7 @@ bool X86DAGToDAGISel::MatchLoad(SDValue N, X86ISelAddressMode &AM) { SDValue Address = N.getOperand(1); if (Address.getOpcode() == X86ISD::SegmentBaseAddress && - !MatchSegmentBaseAddress (Address, AM)) + !MatchSegmentBaseAddress(Address, AM)) return false; return true; |
