From 3d8bde8dfb2177dabbc6225a451889305d3756dd Mon Sep 17 00:00:00 2001 From: Owen Anderson Date: Tue, 24 Feb 2009 05:44:18 +0000 Subject: [PATCH] Add a debugging option for SSC DCE. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65375 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/StackSlotColoring.cpp | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/lib/CodeGen/StackSlotColoring.cpp b/lib/CodeGen/StackSlotColoring.cpp index 39b0c59a1bf..60b8fad9dfd 100644 --- a/lib/CodeGen/StackSlotColoring.cpp +++ b/lib/CodeGen/StackSlotColoring.cpp @@ -37,6 +37,8 @@ EnableDCE("enable-ssc-dce", cl::init(false), cl::Hidden, cl::desc("Enable slot coloring DCE")); +static cl::opt DCELimit("ssc-dce-limit", cl::init(-1), cl::Hidden); + STATISTIC(NumEliminated, "Number of stack slots eliminated due to coloring"); STATISTIC(NumDeadAccesses, "Number of trivially dead stack accesses eliminated"); @@ -286,6 +288,9 @@ bool StackSlotColoring::removeDeadStores(MachineBasicBlock* MBB) { for (MachineBasicBlock::iterator I = MBB->begin(), E = MBB->end(); I != E; ++I) { + if (DCELimit != -1 && (int)NumDeadAccesses >= DCELimit) + break; + MachineBasicBlock::iterator NextMI = next(I); if (NextMI == MBB->end()) continue; -- 2.11.0