[PATCH] D40404: [APInt] Don't print debug messages from the APInt knuth division algorithm by default

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This revision was automatically updated to reflect the committed changes.
Closed by commit rL318963: [APInt] Don't print debug messages from the APInt knuth division algorithm by… (authored by ctopper).

Changed prior to commit:
  https://reviews.llvm.org/D40404?vs=124114&id=124233#toc

Repository:
  rL LLVM

https://reviews.llvm.org/D40404

Files:
  llvm/trunk/lib/Support/APInt.cpp


Index: llvm/trunk/lib/Support/APInt.cpp
===================================================================
--- llvm/trunk/lib/Support/APInt.cpp
+++ llvm/trunk/lib/Support/APInt.cpp
@@ -1252,6 +1252,14 @@
   // b denotes the base of the number system. In our case b is 2^32.
   const uint64_t b = uint64_t(1) << 32;
 
+// The DEBUG macros here tend to be spam in the debug output if you're not
+// debugging this code. Disable them unless KNUTH_DEBUG is defined.
+#pragma push_macro("DEBUG")
+#ifndef KNUTH_DEBUG
+#undef DEBUG
+#define DEBUG(X) do {} while (true)
+#endif
+
   DEBUG(dbgs() << "KnuthDiv: m=" << m << " n=" << n << '\n');
   DEBUG(dbgs() << "KnuthDiv: original:");
   DEBUG(for (int i = m+n; i >=0; i--) dbgs() << " " << u[i]);
@@ -1391,6 +1399,8 @@
     DEBUG(dbgs() << '\n');
   }
   DEBUG(dbgs() << '\n');
+
+#pragma pop_macro("DEBUG")
 }
 
 void APInt::divide(const WordType *LHS, unsigned lhsWords, const WordType *RHS,


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