From 9446407963005f3edfa8ac70e265c81839a416c9 Mon Sep 17 00:00:00 2001
From: Dale Johannesen <dalej@apple.com>
Date: Wed, 24 Sep 2008 01:07:17 +0000
Subject: Next round of earlyclobber handling.  Approach the RA problem by
 expanding the live interval of an earlyclobber def back one slot.  Remove
 overlap-earlyclobber throughout.  Remove earlyclobber bits and their handling
 from live internals.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56539 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/MachineInstr.cpp | 9 +--------
 1 file changed, 1 insertion(+), 8 deletions(-)

(limited to 'lib/CodeGen/MachineInstr.cpp')

diff --git a/lib/CodeGen/MachineInstr.cpp b/lib/CodeGen/MachineInstr.cpp
index 7d44d4e..4db02f4 100644
--- a/lib/CodeGen/MachineInstr.cpp
+++ b/lib/CodeGen/MachineInstr.cpp
@@ -109,7 +109,6 @@ void MachineOperand::ChangeToRegister(unsigned Reg, bool isDef, bool isImp,
   // register's use/def lists.
   if (isRegister()) {
     assert(!isEarlyClobber());
-    assert(!isEarlyClobber() && !overlapsEarlyClobber());
     setReg(Reg);
   } else {
     // Otherwise, change this to a register and set the reg#.
@@ -129,7 +128,6 @@ void MachineOperand::ChangeToRegister(unsigned Reg, bool isDef, bool isImp,
   IsKill = isKill;
   IsDead = isDead;
   IsEarlyClobber = false;
-  OverlapsEarlyClobber = false;
   SubReg = 0;
 }
 
@@ -185,14 +183,9 @@ void MachineOperand::print(std::ostream &OS, const TargetMachine *TM) const {
         OS << "%mreg" << getReg();
     }
       
-    if (isDef() || isKill() || isDead() || isImplicit() || isEarlyClobber() ||
-        overlapsEarlyClobber()) {
+    if (isDef() || isKill() || isDead() || isImplicit() || isEarlyClobber()) {
       OS << "<";
       bool NeedComma = false;
-      if (overlapsEarlyClobber()) {
-        NeedComma = true;
-        OS << "overlapsearly";
-      }
       if (isImplicit()) {
         if (NeedComma) OS << ",";
         OS << (isDef() ? "imp-def" : "imp-use");
-- 
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