Update LLVM to r96341.

1 files changed, 25 insertions, 16 deletions

diff --git a/lib/Analysis/ValueTracking.cpp b/lib/Analysis/ValueTracking.cpp
index 91e5bc3876b4..7cc9c0dedfcd 100644
--- a/lib/Analysis/ValueTracking.cpp
+++ b/lib/Analysis/ValueTracking.cpp
@@ -49,11 +49,11 @@ void llvm::ComputeMaskedBits(Value *V, const APInt &Mask,
   assert(V && "No Value?");
   assert(Depth <= MaxDepth && "Limit Search Depth");
   unsigned BitWidth = Mask.getBitWidth();
-  assert((V->getType()->isIntOrIntVector() || isa<PointerType>(V->getType())) &&
-         "Not integer or pointer type!");
+  assert((V->getType()->isIntOrIntVectorTy() || isa<PointerType>(V->getType()))
+         && "Not integer or pointer type!");
   assert((!TD ||
           TD->getTypeSizeInBits(V->getType()->getScalarType()) == BitWidth) &&
-         (!V->getType()->isIntOrIntVector() ||
+         (!V->getType()->isIntOrIntVectorTy() ||
           V->getType()->getScalarSizeInBits() == BitWidth) &&
          KnownZero.getBitWidth() == BitWidth && 
          KnownOne.getBitWidth() == BitWidth &&
@@ -269,7 +269,7 @@ void llvm::ComputeMaskedBits(Value *V, const APInt &Mask,
   }
   case Instruction::BitCast: {
     const Type *SrcTy = I->getOperand(0)->getType();
-    if ((SrcTy->isInteger() || isa<PointerType>(SrcTy)) &&
+    if ((SrcTy->isIntegerTy() || isa<PointerType>(SrcTy)) &&
         // TODO: For now, not handling conversions like:
         // (bitcast i64 %x to <2 x i32>)
         !isa<VectorType>(I->getType())) {
@@ -421,20 +421,29 @@ void llvm::ComputeMaskedBits(Value *V, const APInt &Mask,
   }
   case Instruction::SRem:
     if (ConstantInt *Rem = dyn_cast<ConstantInt>(I->getOperand(1))) {
-      APInt RA = Rem->getValue();
-      if (RA.isPowerOf2() || (-RA).isPowerOf2()) {
-        APInt LowBits = RA.isStrictlyPositive() ? (RA - 1) : ~RA;
+      APInt RA = Rem->getValue().abs();
+      if (RA.isPowerOf2()) {
+        APInt LowBits = RA - 1;
         APInt Mask2 = LowBits | APInt::getSignBit(BitWidth);
         ComputeMaskedBits(I->getOperand(0), Mask2, KnownZero2, KnownOne2, TD, 
                           Depth+1);
 
-        // If the sign bit of the first operand is zero, the sign bit of
-        // the result is zero. If the first operand has no one bits below
-        // the second operand's single 1 bit, its sign will be zero.
+        // The low bits of the first operand are unchanged by the srem.
+        KnownZero = KnownZero2 & LowBits;
+        KnownOne = KnownOne2 & LowBits;
+
+        // If the first operand is non-negative or has all low bits zero, then
+        // the upper bits are all zero.
         if (KnownZero2[BitWidth-1] || ((KnownZero2 & LowBits) == LowBits))
-          KnownZero2 |= ~LowBits;
+          KnownZero |= ~LowBits;
 
-        KnownZero |= KnownZero2 & Mask;
+        // If the first operand is negative and not all low bits are zero, then
+        // the upper bits are all one.
+        if (KnownOne2[BitWidth-1] && ((KnownOne2 & LowBits) != 0))
+          KnownOne |= ~LowBits;
+
+        KnownZero &= Mask;
+        KnownOne &= Mask;
 
         assert((KnownZero & KnownOne) == 0 && "Bits known to be one AND zero?"); 
       }
@@ -640,7 +649,7 @@ bool llvm::MaskedValueIsZero(Value *V, const APInt &Mask,
 ///
 unsigned llvm::ComputeNumSignBits(Value *V, const TargetData *TD,
                                   unsigned Depth) {
-  assert((TD || V->getType()->isIntOrIntVector()) &&
+  assert((TD || V->getType()->isIntOrIntVectorTy()) &&
          "ComputeNumSignBits requires a TargetData object to operate "
          "on non-integer values!");
   const Type *Ty = V->getType();
@@ -814,7 +823,7 @@ bool llvm::ComputeMultiple(Value *V, unsigned Base, Value *&Multiple,
 
   assert(V && "No Value?");
   assert(Depth <= MaxDepth && "Limit Search Depth");
-  assert(V->getType()->isInteger() && "Not integer or pointer type!");
+  assert(V->getType()->isIntegerTy() && "Not integer or pointer type!");
 
   const Type *T = V->getType();
 
@@ -1363,7 +1372,7 @@ bool llvm::GetConstantStringInfo(Value *V, std::string &Str, uint64_t Offset,
     // Make sure the index-ee is a pointer to array of i8.
     const PointerType *PT = cast<PointerType>(GEP->getOperand(0)->getType());
     const ArrayType *AT = dyn_cast<ArrayType>(PT->getElementType());
-    if (AT == 0 || !AT->getElementType()->isInteger(8))
+    if (AT == 0 || !AT->getElementType()->isIntegerTy(8))
       return false;
     
     // Check to make sure that the first operand of the GEP is an integer and
@@ -1402,7 +1411,7 @@ bool llvm::GetConstantStringInfo(Value *V, std::string &Str, uint64_t Offset,
   
   // Must be a Constant Array
   ConstantArray *Array = dyn_cast<ConstantArray>(GlobalInit);
-  if (Array == 0 || !Array->getType()->getElementType()->isInteger(8))
+  if (Array == 0 || !Array->getType()->getElementType()->isIntegerTy(8))
     return false;
   
   // Get the number of elements in the array