From bfde7d6b9ea58a59edf61a5f93b2a86e5a9dae37 Mon Sep 17 00:00:00 2001 From: Zhou Sheng Date: Thu, 5 Jun 2008 13:27:38 +0000 Subject: As comments said, for negative value, the arithmetic over-shift-right should return -1. So here it should be signed-extended, when bitwidth larger than 64. test case: llvm/test/ExecutionEngine/2008-06-05-APInt-OverAShr.ll git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51999 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Support/APInt.cpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/Support/APInt.cpp b/lib/Support/APInt.cpp index ef35e1c554..e13011faea 100644 --- a/lib/Support/APInt.cpp +++ b/lib/Support/APInt.cpp @@ -1113,7 +1113,7 @@ APInt APInt::ashr(uint32_t shiftAmt) const { // issues in the algorithm below. if (shiftAmt == BitWidth) { if (isNegative()) - return APInt(BitWidth, -1ULL); + return APInt(BitWidth, -1ULL, true); else return APInt(BitWidth, 0); } -- cgit v1.2.3