It's now possible to run code placement pass for ARM.

llvm-svn: 106935

1 files changed, 8 insertions, 4 deletions

diff --git a/llvm/lib/Target/ARM/ARMISelLowering.cpp b/llvm/lib/Target/ARM/ARMISelLowering.cpp
index d4332f00a7e..d7648b3ad26 100644
--- a/llvm/lib/Target/ARM/ARMISelLowering.cpp
+++ b/llvm/lib/Target/ARM/ARMISelLowering.cpp
@@ -67,6 +67,11 @@ ARMInterworking("arm-interworking", cl::Hidden,
   cl::desc("Enable / disable ARM interworking (for debugging only)"),
   cl::init(true));
 
+static cl::opt<bool>
+EnableARMCodePlacement("arm-code-placement", cl::Hidden,
+  cl::desc("Enable code placement pass for ARM."),
+  cl::init(false));
+
 static bool CC_ARM_APCS_Custom_f64(unsigned &ValNo, EVT &ValVT, EVT &LocVT,
                                    CCValAssign::LocInfo &LocInfo,
                                    ISD::ArgFlagsTy &ArgFlags,
@@ -532,10 +537,9 @@ ARMTargetLowering::ARMTargetLowering(TargetMachine &TM)
     setSchedulingPreference(Sched::Hybrid);
 
   maxStoresPerMemcpy = 1;   //// temporary - rewrite interface to use type
-  // Do not enable CodePlacementOpt for now: it currently runs after the
-  // ARMConstantIslandPass and messes up branch relaxation and placement
-  // of constant islands.
-  // benefitFromCodePlacementOpt = true;
+
+  if (EnableARMCodePlacement)
+    benefitFromCodePlacementOpt = true;
 }
 
 const char *ARMTargetLowering::getTargetNodeName(unsigned Opcode) const {