For PR950:

This patch removes the SetCC instructions and replaces them with the ICmp
and FCmp instructions. The SetCondInst instruction has been removed and
been replaced with ICmpInst and FCmpInst.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32751 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 10 insertions, 8 deletions

diff --git a/lib/Analysis/LoopInfo.cpp b/lib/Analysis/LoopInfo.cpp
index b33e414..27f1750 100644
--- a/lib/Analysis/LoopInfo.cpp
+++ b/lib/Analysis/LoopInfo.cpp
@@ -536,7 +536,7 @@ Instruction *Loop::getCanonicalInductionVariableIncrement() const {
 /// returns null.
 ///
 Value *Loop::getTripCount() const {
-  // Canonical loops will end with a 'setne I, V', where I is the incremented
+  // Canonical loops will end with a 'cmp ne I, V', where I is the incremented
   // canonical induction variable and V is the trip count of the loop.
   Instruction *Inc = getCanonicalInductionVariableIncrement();
   if (Inc == 0) return 0;
@@ -546,15 +546,17 @@ Value *Loop::getTripCount() const {
     IV->getIncomingBlock(contains(IV->getIncomingBlock(1)));
 
   if (BranchInst *BI = dyn_cast<BranchInst>(BackedgeBlock->getTerminator()))
-    if (BI->isConditional())
-      if (SetCondInst *SCI = dyn_cast<SetCondInst>(BI->getCondition()))
-        if (SCI->getOperand(0) == Inc)
+    if (BI->isConditional()) {
+      if (ICmpInst *ICI = dyn_cast<ICmpInst>(BI->getCondition())) {
+        if (ICI->getOperand(0) == Inc)
           if (BI->getSuccessor(0) == getHeader()) {
-            if (SCI->getOpcode() == Instruction::SetNE)
-              return SCI->getOperand(1);
-          } else if (SCI->getOpcode() == Instruction::SetEQ) {
-            return SCI->getOperand(1);
+            if (ICI->getPredicate() == ICmpInst::ICMP_NE)
+              return ICI->getOperand(1);
+          } else if (ICI->getPredicate() == ICmpInst::ICMP_EQ) {
+            return ICI->getOperand(1);
           }
+      }
+    }
 
   return 0;
 }