Revert r206732 which is causing llc to crash on most of the build bots.

Original commit message:
  Implement builtins for safe division: safe.sdiv.iN, safe.udiv.iN,
  safe.srem.iN, safe.urem.iN (iN = i8, i61, i32, or i64).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206735 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 0 insertions, 29 deletions

diff --git a/include/llvm/IR/Intrinsics.td b/include/llvm/IR/Intrinsics.td
index c65b86f5b7..6a48f17393 100644
--- a/include/llvm/IR/Intrinsics.td
+++ b/include/llvm/IR/Intrinsics.td
@@ -444,19 +444,6 @@ def int_umul_with_overflow : Intrinsic<[llvm_anyint_ty, llvm_i1_ty],
                                        [LLVMMatchType<0>, LLVMMatchType<0>],
                                        [IntrNoMem]>;
 
-def int_safe_udiv : Intrinsic<[llvm_anyint_ty, llvm_i1_ty],
-                              [LLVMMatchType<0>, LLVMMatchType<0>],
-                              [IntrNoMem]>;
-def int_safe_urem : Intrinsic<[llvm_anyint_ty, llvm_i1_ty],
-                              [LLVMMatchType<0>, LLVMMatchType<0>],
-                              [IntrNoMem]>;
-def int_safe_sdiv : Intrinsic<[llvm_anyint_ty, llvm_i1_ty],
-                              [LLVMMatchType<0>, LLVMMatchType<0>],
-                              [IntrNoMem]>;
-def int_safe_srem : Intrinsic<[llvm_anyint_ty, llvm_i1_ty],
-                              [LLVMMatchType<0>, LLVMMatchType<0>],
-                              [IntrNoMem]>;
-
 //===------------------------- Memory Use Markers -------------------------===//
 //
 def int_lifetime_start  : Intrinsic<[],
diff --git a/include/llvm/Target/TargetLowering.h b/include/llvm/Target/TargetLowering.h
index 2e4956f16d..5afcd80a28 100644
--- a/include/llvm/Target/TargetLowering.h
+++ b/include/llvm/Target/TargetLowering.h
@@ -218,10 +218,6 @@ public:
   /// Return true if pow2 div is cheaper than a chain of srl/add/sra.
   bool isPow2DivCheap() const { return Pow2DivIsCheap; }
 
-  /// Return true if Div never traps, returns 0 when div by 0 and return TMin,
-  /// when sdiv TMin by -1.
-  bool isDivWellDefined() const { return DivIsWellDefined; }
-
   /// Return true if Flow Control is an expensive operation that should be
   /// avoided.
   bool isJumpExpensive() const { return JumpIsExpensive; }
@@ -1030,13 +1026,6 @@ protected:
   /// signed divide by power of two, and let the target handle it.
   void setPow2DivIsCheap(bool isCheap = true) { Pow2DivIsCheap = isCheap; }
 
-  /// Tells the code-generator that it is safe to execute sdiv/udiv/srem/urem
-  /// even when RHS is 0. It is also safe to execute sdiv/srem when LHS is
-  /// SignedMinValue and RHS is -1.
-  void setDivIsWellDefined (bool isWellDefined = true) {
-    DivIsWellDefined = isWellDefined;
-  }
-
   /// Add the specified register class as an available regclass for the
   /// specified value type. This indicates the selector can handle values of
   /// that class natively.
@@ -1452,11 +1441,6 @@ private:
   /// signed divide by power of two, and let the target handle it.
   bool Pow2DivIsCheap;
 
-  /// Tells the code-generator that it is safe to execute sdiv/udiv/srem/urem
-  /// even when RHS is 0. It is also safe to execute sdiv/srem when LHS is
-  /// SignedMinValue and RHS is -1.
-  bool DivIsWellDefined;
-
   /// Tells the code generator that it shouldn't generate extra flow control
   /// instructions and should attempt to combine flow control instructions via
   /// predication.