From 80caf9c2737d4f1bf5bae3a283fe9d538f5e2970 Mon Sep 17 00:00:00 2001 From: Bill Wendling Date: Tue, 6 Dec 2011 01:57:48 +0000 Subject: [PATCH] Add a comment. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145896 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Target/X86/X86FrameLowering.cpp | 3 +++ 1 file changed, 3 insertions(+) diff --git a/lib/Target/X86/X86FrameLowering.cpp b/lib/Target/X86/X86FrameLowering.cpp index 038ca7f34d0..7f3c13391d3 100644 --- a/lib/Target/X86/X86FrameLowering.cpp +++ b/lib/Target/X86/X86FrameLowering.cpp @@ -456,6 +456,9 @@ static uint32_t encodeCompactUnwindRegistersWithFrame(unsigned SavedRegs[6], int CURegNum = getCompactUnwindRegNum(CURegs, Reg); if (CURegNum == -1) return ~0U; + + // Encode the 3-bit register number in order, skipping over 3-bits for each + // register. RegEnc |= (CURegNum & 0x7) << ((5 - I) * 3); } -- 2.34.1