[SystemZ] Add test missing from r186148

[oota-llvm.git] / lib / CodeGen / LiveRegMatrix.cpp

diff --git a/lib/CodeGen/LiveRegMatrix.cpp b/lib/CodeGen/LiveRegMatrix.cpp
index 61e1432b0e2fc21132479650877f264df01cbe19..0ef069f478278ce371290fdaa13be40c1765aecb 100644 (file)
--- a/lib/CodeGen/LiveRegMatrix.cpp
+++ b/lib/CodeGen/LiveRegMatrix.cpp
@@ -12,15 +12,16 @@
 //===----------------------------------------------------------------------===//
 
 #define DEBUG_TYPE "regalloc"
-#include "LiveRegMatrix.h"
-#include "VirtRegMap.h"
+#include "llvm/CodeGen/LiveRegMatrix.h"
+#include "RegisterCoalescer.h"
 #include "llvm/ADT/Statistic.h"
-#include "llvm/CodeGen/MachineRegisterInfo.h"
 #include "llvm/CodeGen/LiveIntervalAnalysis.h"
-#include "llvm/Target/TargetMachine.h"
-#include "llvm/Target/TargetRegisterInfo.h"
+#include "llvm/CodeGen/MachineRegisterInfo.h"
+#include "llvm/CodeGen/VirtRegMap.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/raw_ostream.h"
+#include "llvm/Target/TargetMachine.h"
+#include "llvm/Target/TargetRegisterInfo.h"
 
 using namespace llvm;
 
@@ -110,15 +111,16 @@ bool LiveRegMatrix::checkRegMaskInterference(LiveInterval &VirtReg,
   // The BitVector is indexed by PhysReg, not register unit.
   // Regmask interference is more fine grained than regunits.
   // For example, a Win64 call can clobber %ymm8 yet preserve %xmm8.
-  return !RegMaskUsable.empty() && !RegMaskUsable.test(PhysReg);
+  return !RegMaskUsable.empty() && (!PhysReg || !RegMaskUsable.test(PhysReg));
 }
 
 bool LiveRegMatrix::checkRegUnitInterference(LiveInterval &VirtReg,
                                              unsigned PhysReg) {
   if (VirtReg.empty())
     return false;
+  CoalescerPair CP(VirtReg.reg, PhysReg, *TRI);
   for (MCRegUnitIterator Units(PhysReg, TRI); Units.isValid(); ++Units)
-    if (VirtReg.overlaps(LIS->getRegUnit(*Units)))
+    if (VirtReg.overlaps(LIS->getRegUnit(*Units), CP, *LIS->getSlotIndexes()))
       return true;
   return false;
 }