Revert r59802. It was breaking the build of llvm-gcc:
authorBill Wendling <isanbard@gmail.com>
Fri, 21 Nov 2008 09:09:41 +0000 (09:09 +0000)
committerBill Wendling <isanbard@gmail.com>
Fri, 21 Nov 2008 09:09:41 +0000 (09:09 +0000)
g++ -m32 -c -g -DIN_GCC -W -Wall -Wwrite-strings -Wmissing-format-attribute -fno-common -mdynamic-no-pic -DHAVE_CONFIG_H -Wno-unused -DTARGET_NAME=\"i386-apple-darwin9.5.0\" -I. -I. -I../../llvm-gcc.src/gcc -I../../llvm-gcc.src/gcc/. -I../../llvm-gcc.src/gcc/../include -I./../intl -I../../llvm-gcc.src/gcc/../libcpp/include  -I../../llvm-gcc.src/gcc/../libdecnumber -I../libdecnumber -I/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.obj/include -I/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.src/include -DENABLE_LLVM -I/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.obj/../llvm.src/include  -D_DEBUG  -D_GNU_SOURCE -D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS   -I. -I. -I../../llvm-gcc.src/gcc -I../../llvm-gcc.src/gcc/. -I../../llvm-gcc.src/gcc/../include -I./../intl -I../../llvm-gcc.src/gcc/../libcpp/include  -I../../llvm-gcc.src/gcc/../libdecnumber -I../libdecnumber -I/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.obj/include -I/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.src/include ../../llvm-gcc.src/gcc/llvm-types.cpp -o llvm-types.o
../../llvm-gcc.src/gcc/llvm-convert.cpp: In member function 'void TreeToLLVM::EmitMemCpy(llvm::Value*, llvm::Value*, llvm::Value*, unsigned int)':
../../llvm-gcc.src/gcc/llvm-convert.cpp:1496: error: 'memcpy_i32' is not a member of 'llvm::Intrinsic'
../../llvm-gcc.src/gcc/llvm-convert.cpp:1496: error: 'memcpy_i64' is not a member of 'llvm::Intrinsic'
../../llvm-gcc.src/gcc/llvm-convert.cpp: In member function 'void TreeToLLVM::EmitMemMove(llvm::Value*, llvm::Value*, llvm::Value*, unsigned int)':
../../llvm-gcc.src/gcc/llvm-convert.cpp:1512: error: 'memmove_i32' is not a member of 'llvm::Intrinsic'
../../llvm-gcc.src/gcc/llvm-convert.cpp:1512: error: 'memmove_i64' is not a member of 'llvm::Intrinsic'
../../llvm-gcc.src/gcc/llvm-convert.cpp: In member function 'void TreeToLLVM::EmitMemSet(llvm::Value*, llvm::Value*, llvm::Value*, unsigned int)':
../../llvm-gcc.src/gcc/llvm-convert.cpp:1528: error: 'memset_i32' is not a member of 'llvm::Intrinsic'
../../llvm-gcc.src/gcc/llvm-convert.cpp:1528: error: 'memset_i64' is not a member of 'llvm::Intrinsic'
make[3]: *** [llvm-convert.o] Error 1
make[3]: *** Waiting for unfinished jobs....
rm fsf-funding.pod gcov.pod gfdl.pod cpp.pod gpl.pod gcc.pod
make[2]: *** [all-stage1-gcc] Error 2
make[1]: *** [stage1-bubble] Error 2
make: *** [all] Error 2

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59809 91177308-0d34-0410-b5e6-96231b3b80d8

12 files changed:
docs/LangRef.html
examples/BrainF/BrainF.cpp
include/llvm/IntrinsicInst.h
include/llvm/Intrinsics.td
lib/Analysis/IPA/Andersens.cpp
lib/CodeGen/IntrinsicLowering.cpp
lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp
lib/Transforms/Scalar/InstructionCombining.cpp
lib/Transforms/Scalar/MemCpyOptimizer.cpp
lib/Transforms/Scalar/SimplifyLibCalls.cpp
lib/Transforms/Utils/InlineFunction.cpp
lib/VMCore/Verifier.cpp

index f0cb5d413120377166b39547aaf117f42f274478..59be63b75c8140d2b7974990d47033b4643f8467 100644 (file)
@@ -5070,13 +5070,7 @@ for more efficient code generation.
 <div class="doc_text">
 
 <h5>Syntax:</h5>
-<p>This is an overloaded intrinsic. You can use llvm.memcpy on any integer bit
-width. Not all targets support all bit widths however.</p>
 <pre>
-  declare void @llvm.memcpy.i8(i8 * &lt;dest&gt;, i8 * &lt;src&gt;,
-                                i8 &lt;len&gt;, i32 &lt;align&gt;)
-  declare void @llvm.memcpy.i16(i8 * &lt;dest&gt;, i8 * &lt;src&gt;,
-                                i16 &lt;len&gt;, i32 &lt;align&gt;)
   declare void @llvm.memcpy.i32(i8 * &lt;dest&gt;, i8 * &lt;src&gt;,
                                 i32 &lt;len&gt;, i32 &lt;align&gt;)
   declare void @llvm.memcpy.i64(i8 * &lt;dest&gt;, i8 * &lt;src&gt;,
@@ -5130,13 +5124,7 @@ be set to 0 or 1.
 <div class="doc_text">
 
 <h5>Syntax:</h5>
-<p>This is an overloaded intrinsic. You can use llvm.memmove on any integer bit
-width. Not all targets support all bit widths however.</p>
 <pre>
-  declare void @llvm.memmove.i8(i8 * &lt;dest&gt;, i8 * &lt;src&gt;,
-                                 i8 &lt;len&gt;, i32 &lt;align&gt;)
-  declare void @llvm.memmove.i16(i8 * &lt;dest&gt;, i8 * &lt;src&gt;,
-                                 i16 &lt;len&gt;, i32 &lt;align&gt;)
   declare void @llvm.memmove.i32(i8 * &lt;dest&gt;, i8 * &lt;src&gt;,
                                  i32 &lt;len&gt;, i32 &lt;align&gt;)
   declare void @llvm.memmove.i64(i8 * &lt;dest&gt;, i8 * &lt;src&gt;,
@@ -5191,13 +5179,7 @@ be set to 0 or 1.
 <div class="doc_text">
 
 <h5>Syntax:</h5>
-<p>This is an overloaded intrinsic. You can use llvm.memset on any integer bit
-width. Not all targets support all bit widths however.</p>
 <pre>
-  declare void @llvm.memset.i8(i8 * &lt;dest&gt;, i8 &lt;val&gt;,
-                                i8 &lt;len&gt;, i32 &lt;align&gt;)
-  declare void @llvm.memset.i16(i8 * &lt;dest&gt;, i8 &lt;val&gt;,
-                                i16 &lt;len&gt;, i32 &lt;align&gt;)
   declare void @llvm.memset.i32(i8 * &lt;dest&gt;, i8 &lt;val&gt;,
                                 i32 &lt;len&gt;, i32 &lt;align&gt;)
   declare void @llvm.memset.i64(i8 * &lt;dest&gt;, i8 &lt;val&gt;,
index 32a14c4d5328bd4260009aa349fc11e75edc32ae..86f2ea495d31230c8800391836a11a64358c64dc 100644 (file)
@@ -53,9 +53,7 @@ void BrainF::header() {
   //Function prototypes
 
   //declare void @llvm.memset.i32(i8 *, i8, i32, i32)
-  const Type *Tys[] = { Type::Int32Ty };
-  Function *memset_func = Intrinsic::getDeclaration(module, Intrinsic::memset,
-                                                    Tys, 1);
+  Function *memset_func = Intrinsic::getDeclaration(module, Intrinsic::memset_i32);
 
   //declare i32 @getchar()
   getchar_func = cast<Function>(module->
index 1877eec38f25036e9c21b5aadf6f8f3453dfbcd3..2ef07af379f5213856940d3cb87580f2b5f908eb 100644 (file)
@@ -208,9 +208,12 @@ namespace llvm {
     static inline bool classof(const MemIntrinsic *) { return true; }
     static inline bool classof(const IntrinsicInst *I) {
       switch (I->getIntrinsicID()) {
-      case Intrinsic::memcpy:
-      case Intrinsic::memmove:
-      case Intrinsic::memset:
+      case Intrinsic::memcpy_i32:
+      case Intrinsic::memcpy_i64:
+      case Intrinsic::memmove_i32:
+      case Intrinsic::memmove_i64:
+      case Intrinsic::memset_i32:
+      case Intrinsic::memset_i64:
         return true;
       default: return false;
       }
@@ -243,7 +246,8 @@ namespace llvm {
     // Methods for support type inquiry through isa, cast, and dyn_cast:
     static inline bool classof(const MemCpyInst *) { return true; }
     static inline bool classof(const IntrinsicInst *I) {
-      return I->getIntrinsicID() == Intrinsic::memcpy;
+      return I->getIntrinsicID() == Intrinsic::memcpy_i32 ||
+             I->getIntrinsicID() == Intrinsic::memcpy_i64;
     }
     static inline bool classof(const Value *V) {
       return isa<IntrinsicInst>(V) && classof(cast<IntrinsicInst>(V));
@@ -271,7 +275,8 @@ namespace llvm {
     // Methods for support type inquiry through isa, cast, and dyn_cast:
     static inline bool classof(const MemMoveInst *) { return true; }
     static inline bool classof(const IntrinsicInst *I) {
-      return I->getIntrinsicID() == Intrinsic::memmove;
+      return I->getIntrinsicID() == Intrinsic::memmove_i32 ||
+             I->getIntrinsicID() == Intrinsic::memmove_i64;
     }
     static inline bool classof(const Value *V) {
       return isa<IntrinsicInst>(V) && classof(cast<IntrinsicInst>(V));
@@ -294,7 +299,8 @@ namespace llvm {
     // Methods for support type inquiry through isa, cast, and dyn_cast:
     static inline bool classof(const MemSetInst *) { return true; }
     static inline bool classof(const IntrinsicInst *I) {
-      return I->getIntrinsicID() == Intrinsic::memset;
+      return I->getIntrinsicID() == Intrinsic::memset_i32 ||
+             I->getIntrinsicID() == Intrinsic::memset_i64;
     }
     static inline bool classof(const Value *V) {
       return isa<IntrinsicInst>(V) && classof(cast<IntrinsicInst>(V));
index 3037fbca2b7ef03758bc3948b7873d49b76fabae..194ab5bee2d2c7ee3a881c3baeb6b0726e40a6d2 100644 (file)
@@ -193,15 +193,33 @@ def int_stackprotector : Intrinsic<[llvm_void_ty],
 //
 
 let Properties = [IntrWriteArgMem] in {
-  def int_memcpy  : Intrinsic<[llvm_void_ty],
-                               [llvm_ptr_ty, llvm_ptr_ty,
-                                llvm_anyint_ty, llvm_i32_ty]>;
-  def int_memmove : Intrinsic<[llvm_void_ty],
+  def int_memcpy_i16  : Intrinsic<[llvm_void_ty],
                                   [llvm_ptr_ty, llvm_ptr_ty,
-                                   llvm_anyint_ty, llvm_i32_ty]>;
-  def int_memset  : Intrinsic<[llvm_void_ty],
-                               [llvm_ptr_ty, llvm_i8_ty,
-                                llvm_anyint_ty, llvm_i32_ty]>;
+                                   llvm_i16_ty, llvm_i16_ty]>;
+  def int_memcpy_i32  : Intrinsic<[llvm_void_ty],
+                                  [llvm_ptr_ty, llvm_ptr_ty,
+                                   llvm_i32_ty, llvm_i32_ty]>;
+  def int_memcpy_i64  : Intrinsic<[llvm_void_ty],
+                                  [llvm_ptr_ty, llvm_ptr_ty,
+                                   llvm_i64_ty, llvm_i32_ty]>;
+  def int_memmove_i16 : Intrinsic<[llvm_void_ty],
+                                  [llvm_ptr_ty, llvm_ptr_ty,
+                                   llvm_i16_ty, llvm_i16_ty]>;
+  def int_memmove_i32 : Intrinsic<[llvm_void_ty],
+                                  [llvm_ptr_ty, llvm_ptr_ty,
+                                   llvm_i32_ty, llvm_i32_ty]>;
+  def int_memmove_i64 : Intrinsic<[llvm_void_ty],
+                                  [llvm_ptr_ty, llvm_ptr_ty,
+                                   llvm_i64_ty, llvm_i32_ty]>;
+  def int_memset_i16  : Intrinsic<[llvm_void_ty],
+                                  [llvm_ptr_ty, llvm_i8_ty,
+                                   llvm_i16_ty, llvm_i16_ty]>;
+  def int_memset_i32  : Intrinsic<[llvm_void_ty],
+                                  [llvm_ptr_ty, llvm_i8_ty,
+                                   llvm_i32_ty, llvm_i32_ty]>;
+  def int_memset_i64  : Intrinsic<[llvm_void_ty],
+                                  [llvm_ptr_ty, llvm_i8_ty,
+                                   llvm_i64_ty, llvm_i32_ty]>;
 }
 
 // These functions do not actually read memory, but they are sensitive to the
index 0cf31abf20fdb1e615f70afd755549ac8ea3da83..9e07189a77dd4ad156a2b6f94c103738a6f56a91 100644 (file)
@@ -903,7 +903,8 @@ bool Andersens::AddConstraintsForExternalCall(CallSite CS, Function *F) {
       F->getName() == "atol" || F->getName() == "atoll" ||
       F->getName() == "remove" || F->getName() == "unlink" ||
       F->getName() == "rename" || F->getName() == "memcmp" ||
-      F->getName() == "llvm.memset" ||
+      F->getName() == "llvm.memset.i32" ||
+      F->getName() == "llvm.memset.i64" ||
       F->getName() == "strcmp" || F->getName() == "strncmp" ||
       F->getName() == "execl" || F->getName() == "execlp" ||
       F->getName() == "execle" || F->getName() == "execv" ||
@@ -941,8 +942,8 @@ bool Andersens::AddConstraintsForExternalCall(CallSite CS, Function *F) {
 
 
   // These functions do induce points-to edges.
-  if (F->getName() == "llvm.memcpy" ||
-      F->getName() == "llvm.memmove" ||
+  if (F->getName() == "llvm.memcpy.i32" || F->getName() == "llvm.memcpy.i64" ||
+      F->getName() == "llvm.memmove.i32" ||F->getName() == "llvm.memmove.i64" ||
       F->getName() == "memmove") {
 
     // *Dest = *Src, which requires an artificial graph node to represent the
index 960d660cb946866a1d50a01e9bbe5622d5ddbfa5..7c549bc9a184357aafbe940d75603ead151d283f 100644 (file)
@@ -98,19 +98,22 @@ void IntrinsicLowering::AddPrototypes(Module &M) {
         EnsureFunctionExists(M, "abort", I->arg_end(), I->arg_end(),
                              Type::VoidTy);
         break;
-      case Intrinsic::memcpy:
+      case Intrinsic::memcpy_i32:
+      case Intrinsic::memcpy_i64:
         M.getOrInsertFunction("memcpy", PointerType::getUnqual(Type::Int8Ty),
                               PointerType::getUnqual(Type::Int8Ty), 
                               PointerType::getUnqual(Type::Int8Ty), 
                               TD.getIntPtrType(), (Type *)0);
         break;
-      case Intrinsic::memmove:
+      case Intrinsic::memmove_i32:
+      case Intrinsic::memmove_i64:
         M.getOrInsertFunction("memmove", PointerType::getUnqual(Type::Int8Ty),
                               PointerType::getUnqual(Type::Int8Ty), 
                               PointerType::getUnqual(Type::Int8Ty), 
                               TD.getIntPtrType(), (Type *)0);
         break;
-      case Intrinsic::memset:
+      case Intrinsic::memset_i32:
+      case Intrinsic::memset_i64:
         M.getOrInsertFunction("memset", PointerType::getUnqual(Type::Int8Ty),
                               PointerType::getUnqual(Type::Int8Ty), 
                               Type::Int32Ty, 
@@ -781,7 +784,8 @@ void IntrinsicLowering::LowerIntrinsicCall(CallInst *CI) {
   case Intrinsic::var_annotation:
     break;   // Strip out annotate intrinsic
     
-  case Intrinsic::memcpy: {
+  case Intrinsic::memcpy_i32:
+  case Intrinsic::memcpy_i64: {
     static Constant *MemcpyFCache = 0;
     Value *Size = CI->getOperand(3);
     const Type *IntPtr = TD.getIntPtrType();
@@ -799,7 +803,8 @@ void IntrinsicLowering::LowerIntrinsicCall(CallInst *CI) {
                     MemcpyFCache);
     break;
   }
-  case Intrinsic::memmove: {
+  case Intrinsic::memmove_i32: 
+  case Intrinsic::memmove_i64: {
     static Constant *MemmoveFCache = 0;
     Value *Size = CI->getOperand(3);
     const Type *IntPtr = TD.getIntPtrType();
@@ -817,7 +822,8 @@ void IntrinsicLowering::LowerIntrinsicCall(CallInst *CI) {
                     MemmoveFCache);
     break;
   }
-  case Intrinsic::memset: {
+  case Intrinsic::memset_i32:
+  case Intrinsic::memset_i64: {
     static Constant *MemsetFCache = 0;
     Value *Size = CI->getOperand(3);
     const Type *IntPtr = TD.getIntPtrType();
index 94170420d0f1880a284ed36c05598ab7ad6db7fa..64bcd314c9247fe353f9a8e0ad9a47c1b8778e4f 100644 (file)
@@ -3663,7 +3663,8 @@ SelectionDAGLowering::visitIntrinsicCall(CallInst &I, unsigned Intrinsic) {
   case Intrinsic::longjmp:
     return "_longjmp"+!TLI.usesUnderscoreLongJmp();
     break;
-  case Intrinsic::memcpy: {
+  case Intrinsic::memcpy_i32:
+  case Intrinsic::memcpy_i64: {
     SDValue Op1 = getValue(I.getOperand(1));
     SDValue Op2 = getValue(I.getOperand(2));
     SDValue Op3 = getValue(I.getOperand(3));
@@ -3672,7 +3673,8 @@ SelectionDAGLowering::visitIntrinsicCall(CallInst &I, unsigned Intrinsic) {
                               I.getOperand(1), 0, I.getOperand(2), 0));
     return 0;
   }
-  case Intrinsic::memset: {
+  case Intrinsic::memset_i32:
+  case Intrinsic::memset_i64: {
     SDValue Op1 = getValue(I.getOperand(1));
     SDValue Op2 = getValue(I.getOperand(2));
     SDValue Op3 = getValue(I.getOperand(3));
@@ -3681,7 +3683,8 @@ SelectionDAGLowering::visitIntrinsicCall(CallInst &I, unsigned Intrinsic) {
                               I.getOperand(1), 0));
     return 0;
   }
-  case Intrinsic::memmove: {
+  case Intrinsic::memmove_i32:
+  case Intrinsic::memmove_i64: {
     SDValue Op1 = getValue(I.getOperand(1));
     SDValue Op2 = getValue(I.getOperand(2));
     SDValue Op3 = getValue(I.getOperand(3));
index 717a46eb82c28e99d320609001c79e93d69e5723..ee6b51cf2968de012f6cb3bcb77caef8edf08d9d 100644 (file)
@@ -9200,11 +9200,12 @@ Instruction *InstCombiner::visitCallInst(CallInst &CI) {
       if (GlobalVariable *GVSrc = dyn_cast<GlobalVariable>(MMI->getSource()))
         if (GVSrc->isConstant()) {
           Module *M = CI.getParent()->getParent()->getParent();
-          Intrinsic::ID MemCpyID = Intrinsic::memcpy;
-          const Type *Tys[1];
-          Tys[0] = CI.getOperand(3)->getType();
-          CI.setOperand(0, 
-                        Intrinsic::getDeclaration(M, MemCpyID, Tys, 1));
+          Intrinsic::ID MemCpyID;
+          if (CI.getOperand(3)->getType() == Type::Int32Ty)
+            MemCpyID = Intrinsic::memcpy_i32;
+          else
+            MemCpyID = Intrinsic::memcpy_i64;
+          CI.setOperand(0, Intrinsic::getDeclaration(M, MemCpyID));
           Changed = true;
         }
 
index 6d27327991f10234a160007b1fa2b57da37ad1d5..7ccca0023984e4c0701df32992f593a5e9540da4 100644 (file)
@@ -427,12 +427,9 @@ bool MemCpyOpt::processStore(StoreInst *SI, BasicBlock::iterator& BBI) {
     // instruction needed by the start of the block.
     BasicBlock::iterator InsertPt = BI;
   
-    if (MemSetF == 0) {
-      const Type *Tys[] = {Type::Int64Ty};
+    if (MemSetF == 0)
       MemSetF = Intrinsic::getDeclaration(SI->getParent()->getParent()
-                                          ->getParent(), Intrinsic::memset,
-                                          Tys, 1);
-   }
+                                          ->getParent(), Intrinsic::memset_i64);
     
     // Get the starting pointer of the block.
     StartPtr = Range.StartPtr;
@@ -674,11 +671,9 @@ bool MemCpyOpt::processMemCpy(MemCpyInst* M) {
     return false;
   
   // If all checks passed, then we can transform these memcpy's
-  const Type *Tys[1];
-  Tys[0] = M->getLength()->getType();
   Function* MemCpyFun = Intrinsic::getDeclaration(
                                  M->getParent()->getParent()->getParent(),
-                                 M->getIntrinsicID(), Tys, 1);
+                                 M->getIntrinsicID());
     
   std::vector<Value*> args;
   args.push_back(M->getRawDest());
index 89527477a8046983a25471d306769d6d75a5288b..2fbc25e0bd94e5ead16896da11211f397ec0243a 100644 (file)
@@ -130,10 +130,9 @@ Value *LibCallOptimization::EmitStrLen(Value *Ptr, IRBuilder<> &B) {
 Value *LibCallOptimization::EmitMemCpy(Value *Dst, Value *Src, Value *Len,
                                        unsigned Align, IRBuilder<> &B) {
   Module *M = Caller->getParent();
-  Intrinsic::ID IID = Intrinsic::memcpy;
-  const Type *Tys[1];
-  Tys[0] = Len->getType();
-  Value *MemCpy = Intrinsic::getDeclaration(M, IID, Tys, 1);
+  Intrinsic::ID IID = Len->getType() == Type::Int32Ty ?
+                           Intrinsic::memcpy_i32 : Intrinsic::memcpy_i64;
+  Value *MemCpy = Intrinsic::getDeclaration(M, IID);
   return B.CreateCall4(MemCpy, CastToCStr(Dst, B), CastToCStr(Src, B), Len,
                        ConstantInt::get(Type::Int32Ty, Align));
 }
index 49131e8fd26fb198f7cfd7f29553b2294eb177ee..26b4de5d3b144ddd13f68462cf66ea57fffe694c 100644 (file)
@@ -257,10 +257,8 @@ bool llvm::InlineFunction(CallSite CS, CallGraph *CG, const TargetData *TD) {
         Value *NewAlloca = new AllocaInst(AggTy, 0, Align, I->getName(),
                                           Caller->begin()->begin());
         // Emit a memcpy.
-        const Type *Tys[] = { Type::Int64Ty };
         Function *MemCpyFn = Intrinsic::getDeclaration(Caller->getParent(),
-                                                       Intrinsic::memcpy, 
-                                                       Tys, 1);
+                                                       Intrinsic::memcpy_i64);
         Value *DestCast = new BitCastInst(NewAlloca, VoidPtrTy, "tmp", TheCall);
         Value *SrcCast = new BitCastInst(*AI, VoidPtrTy, "tmp", TheCall);
 
index 366294138b704f9ff406294ca3c685b83c8e4826..ffafc77c828129088e8b445b7fd92d1aa516ee0a 100644 (file)
@@ -1336,9 +1336,12 @@ void Verifier::visitIntrinsicFunctionCall(Intrinsic::ID ID, CallInst &CI) {
   switch (ID) {
   default:
     break;
-  case Intrinsic::memcpy:
-  case Intrinsic::memmove:
-  case Intrinsic::memset:
+  case Intrinsic::memcpy_i32:
+  case Intrinsic::memcpy_i64:
+  case Intrinsic::memmove_i32:
+  case Intrinsic::memmove_i64:
+  case Intrinsic::memset_i32:
+  case Intrinsic::memset_i64:
     Assert1(isa<ConstantInt>(CI.getOperand(4)),
             "alignment argument of memory intrinsics must be a constant int",
             &CI);