From f0785153e51a60ede0a85bf98c1c1e6ada9054f6 Mon Sep 17 00:00:00 2001 From: Evan Cheng Date: Thu, 10 Apr 2008 08:03:14 +0000 Subject: [PATCH] Add comment. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49469 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/SimpleRegisterCoalescing.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/lib/CodeGen/SimpleRegisterCoalescing.h b/lib/CodeGen/SimpleRegisterCoalescing.h index 7823ba0df4b..fa63159d1c8 100644 --- a/lib/CodeGen/SimpleRegisterCoalescing.h +++ b/lib/CodeGen/SimpleRegisterCoalescing.h @@ -223,6 +223,8 @@ namespace llvm { /// subregister. void UpdateRegDefsUses(unsigned SrcReg, unsigned DstReg, unsigned SubIdx); + /// RemoveDeadImpDef - Remove implicit_def instructions which are + /// "re-defining" registers due to insert_subreg coalescing. e.g. void RemoveDeadImpDef(unsigned Reg, LiveInterval &LI); /// RemoveUnnecessaryKills - Remove kill markers that are no longer accurate