mirror of
https://github.com/RPCSX/llvm.git
synced 2024-12-02 00:36:36 +00:00
455889aa79
llvm/Support/CFG.h * Make pred & succ iterators for intervals global functions * Add #includes that are now neccesary because BasicBlock.h doesn't include InstrTypes.h anymore git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1750 91177308-0d34-0410-b5e6-96231b3b80d8
29 lines
970 B
C++
29 lines
970 B
C++
//===- Interval.cpp - Interval class code ------------------------*- C++ -*--=//
|
|
//
|
|
// This file contains the definition of the cfg::Interval class, which
|
|
// represents a partition of a control flow graph of some kind.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/Analysis/Interval.h"
|
|
#include "llvm/BasicBlock.h"
|
|
#include "llvm/Support/CFG.h"
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Interval Implementation
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// isLoop - Find out if there is a back edge in this interval...
|
|
//
|
|
bool cfg::Interval::isLoop() const {
|
|
// There is a loop in this interval iff one of the predecessors of the header
|
|
// node lives in the interval.
|
|
for (::pred_iterator I = ::pred_begin(HeaderNode), E = ::pred_end(HeaderNode);
|
|
I != E; ++I) {
|
|
if (contains(*I)) return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
|