summaryrefslogtreecommitdiffstats
path: root/gnu/llvm/lib/Analysis/IntervalPartition.cpp
diff options
context:
space:
mode:
authorpatrick <patrick@openbsd.org>2020-08-03 15:06:44 +0000
committerpatrick <patrick@openbsd.org>2020-08-03 15:06:44 +0000
commitb64793999546ed8adebaeebd9d8345d18db8927d (patch)
tree4357c27b561d73b0e089727c6ed659f2ceff5f47 /gnu/llvm/lib/Analysis/IntervalPartition.cpp
parentAdd support for UTF-8 DISPLAY-HINTs with octet length. For now only (diff)
downloadwireguard-openbsd-b64793999546ed8adebaeebd9d8345d18db8927d.tar.xz
wireguard-openbsd-b64793999546ed8adebaeebd9d8345d18db8927d.zip
Remove LLVM 8.0.1 files.
Diffstat (limited to 'gnu/llvm/lib/Analysis/IntervalPartition.cpp')
-rw-r--r--gnu/llvm/lib/Analysis/IntervalPartition.cpp114
1 files changed, 0 insertions, 114 deletions
diff --git a/gnu/llvm/lib/Analysis/IntervalPartition.cpp b/gnu/llvm/lib/Analysis/IntervalPartition.cpp
deleted file mode 100644
index c777d91b67c..00000000000
--- a/gnu/llvm/lib/Analysis/IntervalPartition.cpp
+++ /dev/null
@@ -1,114 +0,0 @@
-//===- IntervalPartition.cpp - Interval Partition module code -------------===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file contains the definition of the IntervalPartition class, which
-// calculates and represent the interval partition of a function.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/Analysis/IntervalPartition.h"
-#include "llvm/Analysis/Interval.h"
-#include "llvm/Analysis/IntervalIterator.h"
-#include "llvm/Pass.h"
-#include <cassert>
-#include <utility>
-
-using namespace llvm;
-
-char IntervalPartition::ID = 0;
-
-INITIALIZE_PASS(IntervalPartition, "intervals",
- "Interval Partition Construction", true, true)
-
-//===----------------------------------------------------------------------===//
-// IntervalPartition Implementation
-//===----------------------------------------------------------------------===//
-
-// releaseMemory - Reset state back to before function was analyzed
-void IntervalPartition::releaseMemory() {
- for (unsigned i = 0, e = Intervals.size(); i != e; ++i)
- delete Intervals[i];
- IntervalMap.clear();
- Intervals.clear();
- RootInterval = nullptr;
-}
-
-void IntervalPartition::print(raw_ostream &O, const Module*) const {
- for(unsigned i = 0, e = Intervals.size(); i != e; ++i)
- Intervals[i]->print(O);
-}
-
-// addIntervalToPartition - Add an interval to the internal list of intervals,
-// and then add mappings from all of the basic blocks in the interval to the
-// interval itself (in the IntervalMap).
-void IntervalPartition::addIntervalToPartition(Interval *I) {
- Intervals.push_back(I);
-
- // Add mappings for all of the basic blocks in I to the IntervalPartition
- for (Interval::node_iterator It = I->Nodes.begin(), End = I->Nodes.end();
- It != End; ++It)
- IntervalMap.insert(std::make_pair(*It, I));
-}
-
-// updatePredecessors - Interval generation only sets the successor fields of
-// the interval data structures. After interval generation is complete,
-// run through all of the intervals and propagate successor info as
-// predecessor info.
-void IntervalPartition::updatePredecessors(Interval *Int) {
- BasicBlock *Header = Int->getHeaderNode();
- for (BasicBlock *Successor : Int->Successors)
- getBlockInterval(Successor)->Predecessors.push_back(Header);
-}
-
-// IntervalPartition ctor - Build the first level interval partition for the
-// specified function...
-bool IntervalPartition::runOnFunction(Function &F) {
- // Pass false to intervals_begin because we take ownership of it's memory
- function_interval_iterator I = intervals_begin(&F, false);
- assert(I != intervals_end(&F) && "No intervals in function!?!?!");
-
- addIntervalToPartition(RootInterval = *I);
-
- ++I; // After the first one...
-
- // Add the rest of the intervals to the partition.
- for (function_interval_iterator E = intervals_end(&F); I != E; ++I)
- addIntervalToPartition(*I);
-
- // Now that we know all of the successor information, propagate this to the
- // predecessors for each block.
- for (unsigned i = 0, e = Intervals.size(); i != e; ++i)
- updatePredecessors(Intervals[i]);
- return false;
-}
-
-// IntervalPartition ctor - Build a reduced interval partition from an
-// existing interval graph. This takes an additional boolean parameter to
-// distinguish it from a copy constructor. Always pass in false for now.
-IntervalPartition::IntervalPartition(IntervalPartition &IP, bool)
- : FunctionPass(ID) {
- assert(IP.getRootInterval() && "Cannot operate on empty IntervalPartitions!");
-
- // Pass false to intervals_begin because we take ownership of it's memory
- interval_part_interval_iterator I = intervals_begin(IP, false);
- assert(I != intervals_end(IP) && "No intervals in interval partition!?!?!");
-
- addIntervalToPartition(RootInterval = *I);
-
- ++I; // After the first one...
-
- // Add the rest of the intervals to the partition.
- for (interval_part_interval_iterator E = intervals_end(IP); I != E; ++I)
- addIntervalToPartition(*I);
-
- // Now that we know all of the successor information, propagate this to the
- // predecessors for each block.
- for (unsigned i = 0, e = Intervals.size(); i != e; ++i)
- updatePredecessors(Intervals[i]);
-}