[llvm] r275593 - [SCCP] Merge two conditions into one. NFCI.

Davide Italiano via llvm-commits llvm-commits at lists.llvm.org
Fri Jul 15 11:33:16 PDT 2016


Author: davide
Date: Fri Jul 15 13:33:16 2016
New Revision: 275593

URL: http://llvm.org/viewvc/llvm-project?rev=275593&view=rev
Log:
[SCCP] Merge two conditions into one. NFCI.

Modified:
    llvm/trunk/lib/Transforms/Scalar/SCCP.cpp

Modified: llvm/trunk/lib/Transforms/Scalar/SCCP.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Scalar/SCCP.cpp?rev=275593&r1=275592&r2=275593&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/Scalar/SCCP.cpp (original)
+++ llvm/trunk/lib/Transforms/Scalar/SCCP.cpp Fri Jul 15 13:33:16 2016
@@ -1489,9 +1489,7 @@ bool SCCPSolver::ResolvedUndefsIn(Functi
     }
 
     if (SwitchInst *SI = dyn_cast<SwitchInst>(TI)) {
-      if (!SI->getNumCases())
-        continue;
-      if (!getValueState(SI->getCondition()).isUnknown())
+      if (!SI->getNumCases() || !getValueState(SI->getCondition()).isUnknown())
         continue;
 
       // If the input to SCCP is actually switch on undef, fix the undef to




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