X-Git-Url: http://plrg.eecs.uci.edu/git/?p=oota-llvm.git;a=blobdiff_plain;f=lib%2FTarget%2FPowerPC%2FPPCFastISel.cpp;h=777cc3b601c0742c523c8f9f05cb7fde8044d81d;hp=5b9451c2bd7ba0b6127c610001c9af4883afc9bd;hb=0a7ec6ced609c340fc4028aa8a65996623dd4181;hpb=3de08c62a1888cb7394b65b2f9b88e7e36530ea0

diff --git a/lib/Target/PowerPC/PPCFastISel.cpp b/lib/Target/PowerPC/PPCFastISel.cpp
index 5b9451c2bd7..777cc3b601c 100644
--- a/lib/Target/PowerPC/PPCFastISel.cpp
+++ b/lib/Target/PowerPC/PPCFastISel.cpp
@@ -293,10 +293,7 @@ bool PPCFastISel::isValueAvailable(const Value *V) const {
     return true;
 
   const auto *I = cast<Instruction>(V);
-  if (FuncInfo.MBBMap[I->getParent()] == FuncInfo.MBB)
-    return true;
-
-  return false;
+  return FuncInfo.MBBMap[I->getParent()] == FuncInfo.MBB;
 }
 
 // Given a value Obj, create an Address object Addr that represents its
@@ -2102,7 +2099,9 @@ unsigned PPCFastISel::PPCMaterializeInt(const ConstantInt *CI, MVT VT,
     BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DbgLoc, TII.get(Opc), ImmReg)
         .addImm(CI->getSExtValue());
     return ImmReg;
-  } else if (!UseSExt && isUInt<16>(CI->getZExtValue())) {
+  } else if (!UseSExt && isUInt<16>(CI->getSExtValue())) {
+    // Since LI will sign extend the constant we need to make sure that for
+    // our zeroext constants that the sign extended constant fits into 16-bits.
     unsigned Opc = (VT == MVT::i64) ? PPC::LI8 : PPC::LI;
     unsigned ImmReg = createResultReg(RC);
     BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DbgLoc, TII.get(Opc), ImmReg)
@@ -2111,8 +2110,7 @@ unsigned PPCFastISel::PPCMaterializeInt(const ConstantInt *CI, MVT VT,
   }
 
   // Construct the constant piecewise.
-  int64_t Imm = CI->getZExtValue();
-
+  int64_t Imm = UseSExt ? CI->getSExtValue() : CI->getZExtValue();
   if (VT == MVT::i64)
     return PPCMaterialize64BitInt(Imm, RC);
   else if (VT == MVT::i32)