[llvm-commits] [llvm] r50210 - /llvm/branches/ggreif/use-diet/lib/Bitcode/Reader/BitcodeReader.cpp

[Gabor Greif]

Author: ggreif
Date: Thu Apr 24 04:46:58 2008
New Revision: 50210

URL: http://llvm.org/viewvc/llvm-project?rev=50210&view=rev
Log:
document the magic numbers

Modified:
    llvm/branches/ggreif/use-diet/lib/Bitcode/Reader/BitcodeReader.cpp

Modified: llvm/branches/ggreif/use-diet/lib/Bitcode/Reader/BitcodeReader.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/branches/ggreif/use-diet/lib/Bitcode/Reader/BitcodeReader.cpp?rev=50210&r1=50209&r2=50210&view=diff

==============================================================================
--- llvm/branches/ggreif/use-diet/lib/Bitcode/Reader/BitcodeReader.cpp (original)
+++ llvm/branches/ggreif/use-diet/lib/Bitcode/Reader/BitcodeReader.cpp Thu Apr 24 04:46:58 2008
@@ -149,6 +149,16 @@
 void BitcodeReaderValueList::resize(unsigned Desired) {
   if (Desired > Capacity)
   {
+    // Since we expect many values
+    // to come from the bitcode file
+    // we better allocate the double
+    // amount, so that the array size
+    // grows exponentially at each
+    // reallocation.  Also, add a small
+    // amount of 100 extra elements
+    // each time, to reallocate less
+    // frequently when the array
+    // is still small.
     Capacity = Desired * 2 + 100;
     Use *New = allocHungoffUses(Capacity);
     Use *Old = OperandList;