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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@291 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/LiveVar/LiveVarSet.cpp b/lib/Analysis/LiveVar/LiveVarSet.cpp
new file mode 100644
index 0000000..c893817
--- /dev/null
+++ b/lib/Analysis/LiveVar/LiveVarSet.cpp
@@ -0,0 +1,20 @@
+#include "llvm/Analysis/LiveVar/LiveVarSet.h"
+
+
+// This function applies an instruction to a live var set (accepts OutSet) and
+// makes necessary changes to it (produces InSet)
+
+void LiveVarSet::applyTranferFuncForInst(const Instruction *const Inst)
+{
+
+ if( Inst->isDefinition() ) { // add to Defs iff this instr is a definition
+ remove(Inst); // this definition kills any uses
+ }
+ Instruction::op_const_iterator OpI = Inst->op_begin(); // get operand iterat
+
+ for( ; OpI != Inst->op_end() ; OpI++) { // iterate over operands
+ if ( ((*OpI)->getType())->isLabelType()) continue; // don't process labels
+ add( *OpI ); // An operand is a use - so add to use set
+ }
+
+}