From f298fd0428e3e26fda13d24bb7295c416a9b8452 Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Sun, 4 Mar 2007 23:33:19 +0000 Subject: [PATCH] add a getSignBit method, elimiante virtual method from getBitMask() git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34916 91177308-0d34-0410-b5e6-96231b3b80d8 --- include/llvm/DerivedTypes.h | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/include/llvm/DerivedTypes.h b/include/llvm/DerivedTypes.h index 29d7ede8232..dadbdcc3add 100644 --- a/include/llvm/DerivedTypes.h +++ b/include/llvm/DerivedTypes.h @@ -106,9 +106,15 @@ public: /// that can be set by an unsigned version of this type. This is 0xFF for /// sbyte/ubyte, 0xFFFF for shorts, etc. uint64_t getBitMask() const { - return ~uint64_t(0UL) >> (64-getPrimitiveSizeInBits()); + return ~uint64_t(0UL) >> (64-getBitWidth()); } + /// getSignBit - Return a uint64_t with just the most significant bit set (the + /// sign bit, if the value is treated as a signed number). + uint64_t getSignBit() const { + return 1ULL << (getBitWidth()-1); + } + /// For example, this is 0xFF for an 8 bit integer, 0xFFFF for i16, etc. /// @returns a bit mask with ones set for all the bits of this type. /// @brief Get a bit mask for this type. -- 2.34.1