commit f161e391f889c32b47c73c8daed697e93b8c709b
author Andrew Trick <atrick@apple.com> Mon Jul 02 18:10:42 2012 +0000
committer Andrew Trick <atrick@apple.com> Mon Jul 02 18:10:42 2012 +0000
tree 1d087db8f49d61b74957ebfea7cbf3f89d9ba8e8
parent 1698d50aac057304ad1a1f73c45e1d2779fd52f0

Reapply "Make NumMicroOps a variable in the subtarget's instruction itinerary."

Reapplies r159406 with minor cleanup. The regressions appear to have been spurious.

llvm-svn: 159541

llvm/lib/CodeGen/TargetInstrInfoImpl.cpp

diff --git a/llvm/lib/CodeGen/TargetInstrInfoImpl.cpp b/llvm/lib/CodeGen/TargetInstrInfoImpl.cpp
index 7af08f5..54be88a 100644
--- a/llvm/lib/CodeGen/TargetInstrInfoImpl.cpp
+++ b/llvm/lib/CodeGen/TargetInstrInfoImpl.cpp
@@ -560,8 +560,8 @@
     return 1;
 
   unsigned Class = MI->getDesc().getSchedClass();
-  unsigned UOps = ItinData->Itineraries[Class].NumMicroOps;
-  if (UOps)
+  int UOps = ItinData->Itineraries[Class].NumMicroOps;
+  if (UOps >= 0)
     return UOps;
 
   // The # of u-ops is dynamically determined. The specific target should