[X86] Tidied up comment - we don't custom lower add/sub i64 on i686 anymore. NFCI.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@299004 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index 94cce3d6ae73bbca04d75edd735f5d7faadf3c53..48fa7c07f85db42ee19add0d9b7cfaa49a212956 100644 (file)
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -435,7 +435,8 @@ X86TargetLowering::X86TargetLowering(const X86TargetMachine &TM,
     setOperationAction(ISD::ExternalSymbol  , VT, Custom);
     setOperationAction(ISD::BlockAddress    , VT, Custom);
   }
-  // 64-bit addm sub, shl, sra, srl (iff 32-bit x86)
+
+  // 64-bit shl, sra, srl (iff 32-bit x86)
   for (auto VT : { MVT::i32, MVT::i64 }) {
     if (VT == MVT::i64 && !Subtarget.is64Bit())
       continue;