convertToSignExtendedInteger should return opInvalidOp instead of asserting if sematics of float does not allow arithmetics.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60042 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 18 insertions, 1 deletions

diff --git a/lib/Support/APFloat.cpp b/lib/Support/APFloat.cpp
index a65e55afb5..128fee4f01 100644
--- a/lib/Support/APFloat.cpp
+++ b/lib/Support/APFloat.cpp
@@ -117,6 +117,11 @@ namespace {
            && "Compile-time arithmetic does not support these semantics");
   }
 
+  static inline bool
+  isArithmeticOk(const llvm::fltSemantics &semantics) {
+    return semantics.arithmeticOK;
+  }
+
   /* Return the value of a decimal exponent of the form
      [+-]ddddddd.
 
@@ -1787,7 +1792,8 @@ APFloat::convertToSignExtendedInteger(integerPart *parts, unsigned int width,
   const integerPart *src;
   unsigned int dstPartsCount, truncatedBits;
 
-  assertArithmeticOK(*semantics);
+  if (!isArithmeticOk(*semantics))
+    return opInvalidOp;
 
   *isExact = false;
 
diff --git a/test/Transforms/IndVarsSimplify/2008-11-25-APFloatAssert.ll b/test/Transforms/IndVarsSimplify/2008-11-25-APFloatAssert.ll
new file mode 100644
index 0000000000..9fd0eb9e65
--- /dev/null
+++ b/test/Transforms/IndVarsSimplify/2008-11-25-APFloatAssert.ll
@@ -0,0 +1,11 @@
+; RUN: llvm-as < %s | opt -indvars
+
+define void @t() nounwind {
+entry:
+	br label %bb23.i91
+
+bb23.i91:		; preds = %bb23.i91, %entry
+	%result.0.i89 = phi ppc_fp128 [ 0xM00000000000000000000000000000000, %entry ], [ %0, %bb23.i91 ]		; <ppc_fp128> [#uses=2]
+	%0 = mul ppc_fp128 %result.0.i89, %result.0.i89		; <ppc_fp128> [#uses=1]
+	br label %bb23.i91
+}