From: River Riddle <riverriddle@google.com>
Date: Sat, 4 May 2019 22:00:27 +0000 (-0700)
Subject:     Add a static utility to FloatAttr for converting an APFloat to double.
X-Git-Tag: llvmorg-11-init~1466^2~1822
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=3f27c6068896e0f85b727455a527f15fb842f5b1;p=platform%2Fupstream%2Fllvm.git

Add a static utility to FloatAttr for converting an APFloat to double.

--

PiperOrigin-RevId: 246671765
---

diff --git a/mlir/include/mlir/IR/Attributes.h b/mlir/include/mlir/IR/Attributes.h
index 2de33d3..2ff4937 100644
--- a/mlir/include/mlir/IR/Attributes.h
+++ b/mlir/include/mlir/IR/Attributes.h
@@ -223,6 +223,7 @@ public:
   /// This function is used to convert the value to a double, even if it loses
   /// precision.
   double getValueAsDouble() const;
+  static double getValueAsDouble(APFloat val);
 
   /// Methods for support type inquiry through isa, cast, and dyn_cast.
   static bool kindof(Kind kind) { return kind == Kind::Float; }
diff --git a/mlir/lib/IR/Attributes.cpp b/mlir/lib/IR/Attributes.cpp
index c69cb2b..ab15699 100644
--- a/mlir/lib/IR/Attributes.cpp
+++ b/mlir/lib/IR/Attributes.cpp
@@ -195,10 +195,11 @@ APFloat FloatAttr::getValue() const {
 }
 
 double FloatAttr::getValueAsDouble() const {
-  const auto &semantics = getType().cast<FloatType>().getFloatSemantics();
-  auto value = getValue();
-  bool losesInfo = false; // ignored
-  if (&semantics != &APFloat::IEEEdouble()) {
+  return getValueAsDouble(getValue());
+}
+double FloatAttr::getValueAsDouble(APFloat value) {
+  if (&value.getSemantics() != &APFloat::IEEEdouble()) {
+    bool losesInfo = false;
     value.convert(APFloat::IEEEdouble(), APFloat::rmNearestTiesToEven,
                   &losesInfo);
   }