assert(0) -> LLVM_UNREACHABLE.

Make llvm_unreachable take an optional string, thus moving the cerr<< out of
line.
LLVM_UNREACHABLE is now a simple wrapper that makes the message go away for
NDEBUG builds.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75379 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 4 insertions, 3 deletions

diff --git a/lib/Analysis/ConstantFolding.cpp b/lib/Analysis/ConstantFolding.cpp
index ffdc52ce74..7e6b877b70 100644
--- a/lib/Analysis/ConstantFolding.cpp
+++ b/lib/Analysis/ConstantFolding.cpp
@@ -23,6 +23,7 @@
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/StringMap.h"
 #include "llvm/Target/TargetData.h"
+#include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/GetElementPtrTypeIterator.h"
 #include "llvm/Support/MathExtras.h"
 #include <cerrno>
@@ -365,7 +366,7 @@ Constant *llvm::ConstantFoldInstOperands(unsigned Opcode, const Type *DestTy,
     return 0;
   case Instruction::ICmp:
   case Instruction::FCmp:
-    assert(0 &&"This function is invalid for compares: no predicate specified");
+    LLVM_UNREACHABLE("This function is invalid for compares: no predicate specified");
   case Instruction::PtrToInt:
     // If the input is a inttoptr, eliminate the pair.  This requires knowing
     // the width of a pointer, so it can't be done in ConstantExpr::getCast.
@@ -690,7 +691,7 @@ static Constant *ConstantFoldFP(double (*NativeFP)(double), double V,
     return Context->getConstantFP(APFloat((float)V));
   if (Ty == Type::DoubleTy)
     return Context->getConstantFP(APFloat(V));
-  assert(0 && "Can only constant fold float/double");
+  LLVM_UNREACHABLE("Can only constant fold float/double");
   return 0; // dummy return to suppress warning
 }
 
@@ -709,7 +710,7 @@ static Constant *ConstantFoldBinaryFP(double (*NativeFP)(double, double),
     return Context->getConstantFP(APFloat((float)V));
   if (Ty == Type::DoubleTy)
     return Context->getConstantFP(APFloat(V));
-  assert(0 && "Can only constant fold float/double");
+  LLVM_UNREACHABLE("Can only constant fold float/double");
   return 0; // dummy return to suppress warning
 }