From 7b3392326c40c3c20697816acae597ba7b3144eb Mon Sep 17 00:00:00 2001
From: dim <dim@FreeBSD.org>
Date: Thu, 20 Oct 2011 21:10:27 +0000
Subject: Vendor import of llvm release_30 branch r142614:
http://llvm.org/svn/llvm-project/llvm/branches/release_30@142614
---
lib/CodeGen/ProcessImplicitDefs.cpp | 6 ++++++
1 file changed, 6 insertions(+)
(limited to 'lib/CodeGen/ProcessImplicitDefs.cpp')
diff --git a/lib/CodeGen/ProcessImplicitDefs.cpp b/lib/CodeGen/ProcessImplicitDefs.cpp
index c04d656..b1d8c97 100644
--- a/lib/CodeGen/ProcessImplicitDefs.cpp
+++ b/lib/CodeGen/ProcessImplicitDefs.cpp
@@ -125,8 +125,14 @@ bool ProcessImplicitDefs::runOnMachineFunction(MachineFunction &fn) {
LiveVariables::VarInfo& vi = LV->getVarInfo(MO.getReg());
vi.removeKill(MI);
}
+ unsigned Reg = MI->getOperand(0).getReg();
MI->eraseFromParent();
Changed = true;
+
+ // A REG_SEQUENCE may have been expanded into partial definitions.
+ // If this was the last one, mark Reg as implicitly defined.
+ if (TargetRegisterInfo::isVirtualRegister(Reg) && MRI->def_empty(Reg))
+ ImpDefRegs.insert(Reg);
continue;
}
}
--
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