From 640eb70bee922fa58488185a0b3645b2952da28e Mon Sep 17 00:00:00 2001 From: Nuno Lopes Date: Mon, 9 Nov 2009 15:36:28 +0000 Subject: add zextOrTrunc and sextOrTrunc methods, that are similar to the ones in APInt llvm-svn: 86549 --- llvm/lib/Support/ConstantRange.cpp | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) (limited to 'llvm/lib/Support/ConstantRange.cpp') diff --git a/llvm/lib/Support/ConstantRange.cpp b/llvm/lib/Support/ConstantRange.cpp index 423e90d9935..a194ac4ff55 100644 --- a/llvm/lib/Support/ConstantRange.cpp +++ b/llvm/lib/Support/ConstantRange.cpp @@ -492,6 +492,30 @@ ConstantRange ConstantRange::truncate(uint32_t DstTySize) const { return ConstantRange(L, U); } +/// zextOrTrunc - make this range have the bit width given by \p DstTySize. The +/// value is zero extended, truncated, or left alone to make it that width. +ConstantRange ConstantRange::zextOrTrunc(uint32_t DstTySize) const { + unsigned SrcTySize = getBitWidth(); + if (SrcTySize > DstTySize) + return truncate(DstTySize); + else if (SrcTySize < DstTySize) + return zeroExtend(DstTySize); + else + return *this; +} + +/// sextOrTrunc - make this range have the bit width given by \p DstTySize. The +/// value is sign extended, truncated, or left alone to make it that width. +ConstantRange ConstantRange::sextOrTrunc(uint32_t DstTySize) const { + unsigned SrcTySize = getBitWidth(); + if (SrcTySize > DstTySize) + return truncate(DstTySize); + else if (SrcTySize < DstTySize) + return signExtend(DstTySize); + else + return *this; +} + ConstantRange ConstantRange::add(const ConstantRange &Other) const { if (isEmptySet() || Other.isEmptySet()) -- cgit v1.2.3