From ef4ff212af39380c85c6fee72a3d5a4d9a9787ee Mon Sep 17 00:00:00 2001 From: Justin Bogner Date: Wed, 24 Jun 2015 06:00:53 +0000 Subject: [PATCH] Hexagon: Avoid left shifting negative values (it's UB) Found by ubsan. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240521 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Target/Hexagon/MCTargetDesc/HexagonShuffler.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/Target/Hexagon/MCTargetDesc/HexagonShuffler.h b/lib/Target/Hexagon/MCTargetDesc/HexagonShuffler.h index 9218fd3eb07..949ad8cebdc 100644 --- a/lib/Target/Hexagon/MCTargetDesc/HexagonShuffler.h +++ b/lib/Target/Hexagon/MCTargetDesc/HexagonShuffler.h @@ -34,7 +34,7 @@ public: HexagonResource(unsigned s) { setUnits(s); }; void setUnits(unsigned s) { - Slots = s & ~(-1 << HEXAGON_PACKET_SIZE); + Slots = s & ~(~0U << HEXAGON_PACKET_SIZE); setWeight(s); }; unsigned setWeight(unsigned s); -- 2.34.1