From 59d6cff90eecf31cb3dd860c4e786674cfdd42eb Mon Sep 17 00:00:00 2001 From: Dimitry Andric Date: Mon, 10 Jun 2013 20:36:52 +0000 Subject: Vendor import of llvm tags/RELEASE_33/final r183502 (effectively, 3.3 release): http://llvm.org/svn/llvm-project/llvm/tags/RELEASE_33/final@183502 --- lib/CodeGen/MachineBlockPlacement.cpp | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'lib/CodeGen/MachineBlockPlacement.cpp') diff --git a/lib/CodeGen/MachineBlockPlacement.cpp b/lib/CodeGen/MachineBlockPlacement.cpp index cd948e24a6b21..bfba503b351ea 100644 --- a/lib/CodeGen/MachineBlockPlacement.cpp +++ b/lib/CodeGen/MachineBlockPlacement.cpp @@ -39,6 +39,7 @@ #include "llvm/CodeGen/MachineLoopInfo.h" #include "llvm/CodeGen/MachineModuleInfo.h" #include "llvm/Support/Allocator.h" +#include "llvm/Support/CommandLine.h" #include "llvm/Support/Debug.h" #include "llvm/Target/TargetInstrInfo.h" #include "llvm/Target/TargetLowering.h" @@ -52,6 +53,11 @@ STATISTIC(CondBranchTakenFreq, STATISTIC(UncondBranchTakenFreq, "Potential frequency of taking unconditional branches"); +static cl::opt AlignAllBlock("align-all-blocks", + cl::desc("Force the alignment of all " + "blocks in the function."), + cl::init(0), cl::Hidden); + namespace { class BlockChain; /// \brief Type for our function-wide basic block -> block chain mapping. @@ -1088,6 +1094,12 @@ bool MachineBlockPlacement::runOnMachineFunction(MachineFunction &F) { BlockToChain.clear(); ChainAllocator.DestroyAll(); + if (AlignAllBlock) + // Align all of the blocks in the function to a specific alignment. + for (MachineFunction::iterator FI = F.begin(), FE = F.end(); + FI != FE; ++FI) + FI->setAlignment(AlignAllBlock); + // We always return true as we have no way to track whether the final order // differs from the original order. return true; -- cgit v1.3