From: Reid Kleckner <rnk@google.com>
Date: Thu, 1 Nov 2018 18:53:02 +0000 (+0000)
Subject: Add LLVM_FALLTHROUGH annotation after switch
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=d1628e42d73ac02882d0d5929523906c01316f00;p=clang

Add LLVM_FALLTHROUGH annotation after switch

This silences a -Wimplicit-fallthrough warning from clang. GCC does not
appear to warn when the case body ends in a switch.

This is a somewhat surprising but intended fallthrough that I pulled out
from my mechanical patch. The code intends to handle 'Yi' and related
constraints as the 'x' constraint.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@345873 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Basic/Targets/X86.cpp b/lib/Basic/Targets/X86.cpp
index 467eb55f44..c7f84e5266 100644
--- a/lib/Basic/Targets/X86.cpp
+++ b/lib/Basic/Targets/X86.cpp
@@ -1681,6 +1681,7 @@ bool X86TargetInfo::validateOperandSize(StringRef Constraint,
         return false;
       break;
     }
+    LLVM_FALLTHROUGH;
   case 'v':
   case 'x':
     if (SSELevel >= AVX512F)