[llvm-commits] [llvm] r71291 - in /llvm/trunk: lib/CodeGen/CodePlacementOpt.cpp test/CodeGen/X86/code_placement.ll

[Evan Cheng]

Author: evancheng
Date: Fri May  8 18:35:49 2009
New Revision: 71291

URL: http://llvm.org/viewvc/llvm-project?rev=71291&view=rev
Log:
Enable loop bb placement optimization.

Modified:
    llvm/trunk/lib/CodeGen/CodePlacementOpt.cpp
    llvm/trunk/test/CodeGen/X86/code_placement.ll

Modified: llvm/trunk/lib/CodeGen/CodePlacementOpt.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/CodePlacementOpt.cpp?rev=71291&r1=71290&r2=71291&view=diff

==============================================================================
--- llvm/trunk/lib/CodeGen/CodePlacementOpt.cpp (original)
+++ llvm/trunk/lib/CodeGen/CodePlacementOpt.cpp Fri May  8 18:35:49 2009
@@ -19,17 +19,11 @@
 #include "llvm/Target/TargetInstrInfo.h"
 #include "llvm/Target/TargetLowering.h"
 #include "llvm/Target/TargetMachine.h"
-#include "llvm/Support/CommandLine.h"
 #include "llvm/Support/Compiler.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/ADT/Statistic.h"
 using namespace llvm;
 
-static cl::opt<bool>
-OptLoopBBPlacement("opt-loop-bb-placement",
-                   cl::init(false), cl::Hidden,
-                   cl::desc("Optimize block placements in loops"));
-
 STATISTIC(NumHeaderAligned, "Number of loop header aligned");
 STATISTIC(NumIntraElim,     "Number of intra loop branches eliminated");
 STATISTIC(NumIntraMoved,    "Number of intra loop branches moved");
@@ -108,9 +102,6 @@
 ///       jcc <cond> C, [exit]
 ///
 bool CodePlacementOpt::OptimizeIntraLoopEdges() {
-  if (!OptLoopBBPlacement)
-    return false;
-
   bool Changed = false;
   for (unsigned i = 0, e = UncondJmpMBBs.size(); i != e; ++i) {
     MachineBasicBlock *MBB = UncondJmpMBBs[i].first;

Modified: llvm/trunk/test/CodeGen/X86/code_placement.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/code_placement.ll?rev=71291&r1=71290&r2=71291&view=diff

==============================================================================
--- llvm/trunk/test/CodeGen/X86/code_placement.ll (original)
+++ llvm/trunk/test/CodeGen/X86/code_placement.ll Fri May  8 18:35:49 2009
@@ -1,4 +1,4 @@
-; RUN: llvm-as < %s | llc -march=x86 -opt-loop-bb-placement | %prcontext jmp 1 | grep align
+; RUN: llvm-as < %s | llc -march=x86 | %prcontext jmp 1 | grep align
 
 @Te0 = external global [256 x i32]		; <[256 x i32]*> [#uses=5]
 @Te1 = external global [256 x i32]		; <[256 x i32]*> [#uses=4]