Hack to let the move lowering handle dynamic-no-pic absolute moves of
TLVP:
movl _a@TLVP, %eax
Daniel: Please review if you get a chance.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106194 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/AsmPrinter/X86MCInstLower.cpp b/lib/Target/X86/AsmPrinter/X86MCInstLower.cpp
index a97517b..43c654e 100644
--- a/lib/Target/X86/AsmPrinter/X86MCInstLower.cpp
+++ b/lib/Target/X86/AsmPrinter/X86MCInstLower.cpp
@@ -277,10 +277,21 @@
return;
// Check whether this is an absolute address.
- if (Inst.getOperand(AddrBase + 0).getReg() != 0 ||
- Inst.getOperand(AddrBase + 2).getReg() != 0 ||
- Inst.getOperand(AddrBase + 4).getReg() != 0 ||
- Inst.getOperand(AddrBase + 1).getImm() != 1)
+ // FIXME: We know TLVP symbol refs aren't, but there should be a better way
+ // to do this here.
+ bool Absolute = true;
+ if (Inst.getOperand(AddrOp).isExpr()) {
+ const MCExpr *MCE = Inst.getOperand(AddrOp).getExpr();
+ if (const MCSymbolRefExpr *SRE = dyn_cast<MCSymbolRefExpr>(MCE))
+ if (SRE->getKind() == MCSymbolRefExpr::VK_TLVP)
+ Absolute = false;
+ }
+
+ if (Absolute &&
+ (Inst.getOperand(AddrBase + 0).getReg() != 0 ||
+ Inst.getOperand(AddrBase + 2).getReg() != 0 ||
+ Inst.getOperand(AddrBase + 4).getReg() != 0 ||
+ Inst.getOperand(AddrBase + 1).getImm() != 1))
return;
// If so, rewrite the instruction.