From 69cb9b78f11d505f4351a269fc90e7b77fcda437 Mon Sep 17 00:00:00 2001
From: Dale Johannesen <dalej@apple.com>
Date: Tue, 20 Mar 2007 21:35:06 +0000
Subject: maintain LiveIn when splitting blocks (register scavenging needs it)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35226 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/RegisterScavenging.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

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

diff --git a/lib/CodeGen/RegisterScavenging.cpp b/lib/CodeGen/RegisterScavenging.cpp
index d73dd3d757..e5729abdf4 100644
--- a/lib/CodeGen/RegisterScavenging.cpp
+++ b/lib/CodeGen/RegisterScavenging.cpp
@@ -180,6 +180,13 @@ void RegScavenger::backward() {
   setUsed(ChangedRegs);
 }
 
+void RegScavenger::getRegsUsed(BitVector &used, bool includeReserved) {
+  if (includeReserved)
+    used = RegStates;
+  else
+    used = RegStates & ~ReservedRegs;
+}
+
 /// CreateRegClassMask - Set the bits that represent the registers in the
 /// TargetRegisterClass.
 static void CreateRegClassMask(const TargetRegisterClass *RC, BitVector &Mask) {
-- 
cgit v1.2.3-70-g09d2