6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-07-25 13:24:46 +00:00
Code Issues Projects Releases Wiki Activity

Disable codegen prepare critical edge splitting. Machine instruction passes now

Browse Source 
break critical edges on demand.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114633 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2010-09-23 06:55:34 +00:00
parent 108c872466
commit dd3a41a6b3
11 changed files with 28 additions and 25 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
lib/Transforms/Scalar/CodeGenPrepare.cpp
View File

@@ -31,6 +31,7 @@
#include "llvm/Transforms/Utils/BuildLibCalls.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/SmallSet.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/Assembly/Writer.h"
#include "llvm/Support/CallSite.h"
#include "llvm/Support/CommandLine.h"
@@ -42,10 +43,12 @@
using namespace llvm;
using namespace llvm::PatternMatch;
STATISTIC(NumElim, "Number of blocks eliminated");
static cl::opt<bool>
CriticalEdgeSplit("cgp-critical-edge-splitting",
cl::desc("Split critical edges during codegen prepare"),
cl::init(true), cl::Hidden);
cl::init(false), cl::Hidden);
namespace {
class CodeGenPrepare : public FunctionPass {
@@ -302,6 +305,7 @@ void CodeGenPrepare::EliminateMostlyEmptyBlock(BasicBlock *BB) {
PFI->removeEdge(ProfileInfo::getEdge(BB, DestBB));
}
BB->eraseFromParent();
++NumElim;
DEBUG(dbgs() << "AFTER:\n" << *DestBB << "\n\n\n");
}