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Issue 1683243003: ARM32 Vector lowering - scalarize select (Closed) Base URL: https://chromium.googlesource.com/native_client/pnacl-subzero.git@master
Patch Set: Use BoolFlagSaver for GeneratingTargetHelpers. Created 4 years, 10 months ago
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1 //===- subzero/src/IceUtils.h - Utility functions ---------------*- C++ -*-===// 1 //===- subzero/src/IceUtils.h - Utility functions ---------------*- C++ -*-===//
2 // 2 //
3 // The Subzero Code Generator 3 // The Subzero Code Generator
4 // 4 //
5 // This file is distributed under the University of Illinois Open Source 5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details. 6 // License. See LICENSE.TXT for details.
7 // 7 //
8 //===----------------------------------------------------------------------===// 8 //===----------------------------------------------------------------------===//
9 /// 9 ///
10 /// \file 10 /// \file
(...skipping 105 matching lines...) Expand 10 before | Expand all | Expand 10 after
116 return (value >> shift) | (value << (32 - shift)); 116 return (value >> shift) | (value << (32 - shift));
117 } 117 }
118 118
119 /// Returns true if Val is +0.0. It requires T to be a floating point type. 119 /// Returns true if Val is +0.0. It requires T to be a floating point type.
120 template <typename T> static bool isPositiveZero(T Val) { 120 template <typename T> static bool isPositiveZero(T Val) {
121 static_assert(std::is_floating_point<T>::value, 121 static_assert(std::is_floating_point<T>::value,
122 "Input type must be floating point"); 122 "Input type must be floating point");
123 return Val == 0 && !std::signbit(Val); 123 return Val == 0 && !std::signbit(Val);
124 } 124 }
125 125
126 /// A helper class to ease the settings of RandomizationPoolingPause to disable
Jim Stichnoth 2016/02/12 22:41:31 This comment is now completely wrong. :)
127 /// constant blinding or pooling for some translation phases.
128 class BoolFlagSaver {
129 BoolFlagSaver() = delete;
130 BoolFlagSaver(const BoolFlagSaver &) = delete;
131 BoolFlagSaver &operator=(const BoolFlagSaver &) = delete;
132
133 public:
134 BoolFlagSaver(bool &F, bool NewValue) : OldValue(F), Flag(F) { F = NewValue; }
135 ~BoolFlagSaver() { Flag = OldValue; }
136
137 private:
138 const bool OldValue;
139 bool &Flag;
140 };
141
126 } // end of namespace Utils 142 } // end of namespace Utils
127 } // end of namespace Ice 143 } // end of namespace Ice
128 144
129 #endif // SUBZERO_SRC_ICEUTILS_H 145 #endif // SUBZERO_SRC_ICEUTILS_H
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