[llvm-commits] CVS: llvm/lib/Transforms/Scalar/LICM.cpp

Chris Lattner lattner at cs.uiuc.edu
Sun Apr 18 17:46:00 PDT 2004


Changes in directory llvm/lib/Transforms/Scalar:

LICM.cpp updated: 1.58 -> 1.59

---
Log message:

Move isLoopInvariant to the Loop class


---
Diffs of the changes:  (+2 -10)

Index: llvm/lib/Transforms/Scalar/LICM.cpp
diff -u llvm/lib/Transforms/Scalar/LICM.cpp:1.58 llvm/lib/Transforms/Scalar/LICM.cpp:1.59
--- llvm/lib/Transforms/Scalar/LICM.cpp:1.58	Sun Apr 18 17:15:13 2004
+++ llvm/lib/Transforms/Scalar/LICM.cpp	Sun Apr 18 17:46:08 2004
@@ -176,14 +176,6 @@
       return CurAST->getAliasSetForPointer(V, 0).isMod();
     }
 
-    /// isLoopInvariant - Return true if the specified value is loop invariant
-    ///
-    inline bool isLoopInvariant(Value *V) {
-      if (Instruction *I = dyn_cast<Instruction>(V))
-        return !CurLoop->contains(I->getParent());
-      return true;  // All non-instructions are loop invariant
-    }
-
     bool canSinkOrHoistInst(Instruction &I);
     bool isLoopInvariantInst(Instruction &I);
     bool isNotUsedInLoop(Instruction &I);
@@ -421,7 +413,7 @@
 bool LICM::isLoopInvariantInst(Instruction &I) {
   // The instruction is loop invariant if all of its operands are loop-invariant
   for (unsigned i = 0, e = I.getNumOperands(); i != e; ++i)
-    if (!isLoopInvariant(I.getOperand(i)))
+    if (!CurLoop->isLoopInvariant(I.getOperand(i)))
       return false;
 
   // If we got this far, the instruction is loop invariant!
@@ -714,7 +706,7 @@
     // set, if the pointer is loop invariant, if if we are not eliminating any
     // volatile loads or stores.
     if (!AS.isForwardingAliasSet() && AS.isMod() && AS.isMustAlias() &&
-        !AS.isVolatile() && isLoopInvariant(AS.begin()->first)) {
+        !AS.isVolatile() && CurLoop->isLoopInvariant(AS.begin()->first)) {
       assert(AS.begin() != AS.end() &&
              "Must alias set should have at least one pointer element in it!");
       Value *V = AS.begin()->first;





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