commit 3b1088a2cc15a39c7a7b8dd95a56143f1dda6863
author Jakob Stoklund Olesen <stoklund@2pi.dk> Sat Feb 04 05:20:49 2012 +0000
committer Jakob Stoklund Olesen <stoklund@2pi.dk> Sat Feb 04 05:20:49 2012 +0000
tree ce23a7d61d6e930ded118c1537fa962ac6df2b09
parent edc8db87dc2ed4d2971e7f50464f5f4d0fead537

Don't store COPY pointers in VNInfo.

If a value is defined by a COPY, that instuction can easily and cheaply
be found by getInstructionFromIndex(VNI->def).

This reduces the size of VNInfo from 24 to 16 bytes, and improves
llc compile time by 3%.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149763 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/Spiller.cpp

diff --git a/lib/CodeGen/Spiller.cpp b/lib/CodeGen/Spiller.cpp
index 260ecea..8168d87 100644
--- a/lib/CodeGen/Spiller.cpp
+++ b/lib/CodeGen/Spiller.cpp
@@ -142,7 +142,7 @@
           lis->InsertMachineInstrInMaps(loadInstr).getRegSlot();
         SlotIndex endIndex = loadIndex.getNextIndex();
         VNInfo *loadVNI =
-          newLI->getNextValue(loadIndex, 0, lis->getVNInfoAllocator());
+          newLI->getNextValue(loadIndex, lis->getVNInfoAllocator());
         newLI->addRange(LiveRange(loadIndex, endIndex, loadVNI));
       }
 
@@ -155,7 +155,7 @@
           lis->InsertMachineInstrInMaps(storeInstr).getRegSlot();
         SlotIndex beginIndex = storeIndex.getPrevIndex();
         VNInfo *storeVNI =
-          newLI->getNextValue(beginIndex, 0, lis->getVNInfoAllocator());
+          newLI->getNextValue(beginIndex, lis->getVNInfoAllocator());
         newLI->addRange(LiveRange(beginIndex, storeIndex, storeVNI));
       }