Add some comments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@197875 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/PowerPC/PPCISelLowering.h b/lib/Target/PowerPC/PPCISelLowering.h
index cd4be2da0947fe678389c500ef6c8338bac66ff5..7ae43fa789a643a7a8b33724b7704617541d4a4f 100644 (file)
--- a/lib/Target/PowerPC/PPCISelLowering.h
+++ b/lib/Target/PowerPC/PPCISelLowering.h
@@ -177,6 +177,8 @@ namespace llvm {
       CR6SET,
       CR6UNSET,
 
+      /// GPRC = address of _GLOBAL_OFFSET_TABLE_. Used by initial-exec TLS
+      /// on PPC32.
       PPC32_GOT,
 
       /// G8RC = ADDIS_GOT_TPREL_HA %X2, Symbol - Used by the initial-exec