[llvm-commits] [llvm] r152934 - /llvm/trunk/lib/CodeGen/ScheduleDAGInstrs.cpp

[Benjamin Kramer]

Author: d0k
Date: Fri Mar 16 12:38:19 2012
New Revision: 152934

URL: http://llvm.org/viewvc/llvm-project?rev=152934&view=rev
Log:
ScheduleDAGInstrs: When adding uses we add them into a set that's empty at the beginning, no need to maintain another set for the added regs.

Modified:
    llvm/trunk/lib/CodeGen/ScheduleDAGInstrs.cpp

Modified: llvm/trunk/lib/CodeGen/ScheduleDAGInstrs.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/ScheduleDAGInstrs.cpp?rev=152934&r1=152933&r2=152934&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/ScheduleDAGInstrs.cpp (original)
+++ llvm/trunk/lib/CodeGen/ScheduleDAGInstrs.cpp Fri Mar 16 12:38:19 2012
@@ -209,13 +209,13 @@
   } else {
     // For others, e.g. fallthrough, conditional branch, assume the exit
     // uses all the registers that are livein to the successor blocks.
-    SmallSet<unsigned, 8> Seen;
+    assert(Uses.empty() && "Uses in set before adding deps?");
     for (MachineBasicBlock::succ_iterator SI = BB->succ_begin(),
            SE = BB->succ_end(); SI != SE; ++SI)
       for (MachineBasicBlock::livein_iterator I = (*SI)->livein_begin(),
              E = (*SI)->livein_end(); I != E; ++I) {
         unsigned Reg = *I;
-        if (Seen.insert(Reg))
+        if (!Uses.contains(Reg))
           Uses[Reg].push_back(&ExitSU);
       }
   }