Fix X86FastISel's address-mode folding to stay within the
original basic block. This avoids trouble with examining instructions in other basic blocks which haven't been assigned registers yet. llvm-svn: 106310
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@ -342,6 +342,12 @@ bool X86FastISel::X86SelectAddress(const Value *V, X86AddressMode &AM) {
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const User *U = NULL;
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const User *U = NULL;
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unsigned Opcode = Instruction::UserOp1;
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unsigned Opcode = Instruction::UserOp1;
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if (const Instruction *I = dyn_cast<Instruction>(V)) {
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if (const Instruction *I = dyn_cast<Instruction>(V)) {
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// Don't walk into other basic blocks; it's possible we haven't
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// visited them yet, so the instructions may not yet be assigned
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// virtual registers.
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if (MBBMap[I->getParent()] != MBB)
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return false;
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Opcode = I->getOpcode();
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Opcode = I->getOpcode();
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U = I;
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U = I;
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} else if (const ConstantExpr *C = dyn_cast<ConstantExpr>(V)) {
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} else if (const ConstantExpr *C = dyn_cast<ConstantExpr>(V)) {
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