X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;ds=sidebyside;f=lib%2FTarget%2FARM%2FARMTargetMachine.cpp;h=2564ed925475066d62af411b63877722f4dd10c9;hb=a44321776ecd96fa0344335d3027758be3386e45;hp=4d20a5c1a03da02d5de95589e59cf48e37009ded;hpb=6cb6788b79bcec64886880697fc69b82a296f671;p=oota-llvm.git

diff --git a/lib/Target/ARM/ARMTargetMachine.cpp b/lib/Target/ARM/ARMTargetMachine.cpp
index 4d20a5c1a03..2564ed92547 100644
--- a/lib/Target/ARM/ARMTargetMachine.cpp
+++ b/lib/Target/ARM/ARMTargetMachine.cpp
@@ -93,6 +93,10 @@ bool ARMBaseTargetMachine::addPreRegAlloc(PassManagerBase &PM,
   if (Subtarget.hasNEON())
     PM.add(createNEONPreAllocPass());
 
+  // Calculate and set max stack object alignment early, so we can decide
+  // whether we will need stack realignment (and thus FP).
+  PM.add(createARMMaxStackAlignmentCalculatorPass());
+
   // FIXME: temporarily disabling load / store optimization pass for Thumb1.
   if (OptLevel != CodeGenOpt::None && !Subtarget.isThumb1Only())
     PM.add(createARMLoadStoreOptimizationPass(true));