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Remove unused pass

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llvm-svn: 16338
This commit is contained in:
Chris Lattner 2004-09-14 16:34:08 +00:00
parent a7635e78c2
commit f1450e2a51
1 changed files with 0 additions and 23 deletions
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23
include/llvm/Transforms/Scalar.h
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@ -156,29 +156,6 @@ FunctionPass *createLoopUnswitchPass();
FunctionPass *createLoopUnrollPass();
//===----------------------------------------------------------------------===//
//
// PiNodeInsertion - This pass inserts single entry Phi nodes into basic blocks
// that are preceeded by a conditional branch, where the branch gives
// information about the operands of the condition. For example, this C code:
// if (x == 0) { ... = x + 4;
// becomes:
// if (x == 0) {
// x2 = phi(x); // Node that can hold data flow information about X
// ... = x2 + 4;
//
// Since the direction of the condition branch gives information about X itself
// (whether or not it is zero), some passes (like value numbering or ABCD) can
// use the inserted Phi/Pi nodes as a place to attach information, in this case
// saying that X has a value of 0 in this scope. The power of this analysis
// information is that "in the scope" translates to "for all uses of x2".
//
// This special form of Phi node is refered to as a Pi node, following the
// terminology defined in the "Array Bounds Checks on Demand" paper.
//
Pass *createPiNodeInsertionPass();
//===----------------------------------------------------------------------===//
//
// This pass is used to promote memory references to be register references. A