llvm-6502/lib/Transforms/Scalar
Stepan Dyatkovskiy c10fa6c801 Taken into account Duncan's comments for r149481 dated by 2nd Feb 2012:
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20120130/136146.html

Implemented CaseIterator and it solves almost all described issues: we don't need to mix operand/case/successor indexing anymore. Base iterator class is implemented as a template since it may be initialized either from "const SwitchInst*" or from "SwitchInst*".

ConstCaseIt is just a read-only iterator.
CaseIt is read-write iterator; it allows to change case successor and case value.

Usage of iterator allows totally remove resolveXXXX methods. All indexing convertions done automatically inside the iterator's getters.

Main way of iterator usage looks like this:
SwitchInst *SI = ... // intialize it somehow

for (SwitchInst::CaseIt i = SI->caseBegin(), e = SI->caseEnd(); i != e; ++i) {
  BasicBlock *BB = i.getCaseSuccessor();
  ConstantInt *V = i.getCaseValue();
  // Do something.
}

If you want to convert case number to TerminatorInst successor index, just use getSuccessorIndex iterator's method.
If you want initialize iterator from TerminatorInst successor index, use CaseIt::fromSuccessorIndex(...) method.

There are also related changes in llvm-clients: klee and clang.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152297 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-08 07:06:20 +00:00
..
ADCE.cpp The landingpad instruction isn't dead simply because it's value isn't used. 2011-08-19 21:52:06 +00:00
BasicBlockPlacement.cpp Get rid of static constructors for pass registration. Instead, every pass exposes an initializeMyPassFunction(), which 2010-10-19 17:21:58 +00:00
CMakeLists.txt build/CMake: Finish removal of add_llvm_library_dependencies. 2011-11-29 19:25:30 +00:00
CodeGenPrepare.cpp Do trivial CSE of dead BBs during codegen preparation. 2012-03-04 10:46:01 +00:00
ConstantProp.cpp Last bit of TargetLibraryInfo propagation. Also fixed a case for TargetData 2011-12-01 21:29:16 +00:00
CorrelatedValuePropagation.cpp Don't include Operator.h from InstrTypes.h. 2011-04-11 09:35:34 +00:00
DCE.cpp Remove unused STL header includes. 2011-04-23 19:53:52 +00:00
DeadStoreElimination.cpp Reverted r152620 - DSE: Shorten memset when a later store overwrites the start of it. There were all sorts of buildbot issues 2012-02-28 05:06:24 +00:00
EarlyCSE.cpp bz11794 : EarlyCSE stack overflow on long functions. 2012-01-31 23:14:41 +00:00
GlobalMerge.cpp Fix various issues (or do cleanups) found by enabling certain MSVC warnings. 2012-02-13 06:30:56 +00:00
GVN.cpp Taken into account Duncan's comments for r149481 dated by 2nd Feb 2012: 2012-03-08 07:06:20 +00:00
IndVarSimplify.cpp Remove dead code. Improve llvm_unreachable text. Simplify some control flow. 2012-02-19 11:37:01 +00:00
JumpThreading.cpp Taken into account Duncan's comments for r149481 dated by 2nd Feb 2012: 2012-03-08 07:06:20 +00:00
LICM.cpp Move Instruction::isSafeToSpeculativelyExecute out of VMCore and 2011-12-14 23:49:11 +00:00
LLVMBuild.txt LLVMBuild: Remove trailing newline, which irked me. 2011-12-12 19:48:00 +00:00
LoopDeletion.cpp Don't use PN->replaceUsesOfWith() to change a PHINode's incoming blocks, 2011-06-21 10:02:43 +00:00
LoopIdiomRecognize.cpp Correct grammar. 2011-09-13 00:44:16 +00:00
LoopInstSimplify.cpp Propagate TargetLibraryInfo throughout ConstantFolding.cpp and 2011-12-01 03:08:23 +00:00
LoopRotation.cpp loop-rotate shouldn't hoist alloca instructions out of a loop. Patch by Patrik Hägglund, with slightly modified test. Issue reported by Patrik Hägglund on llvmdev. 2012-02-16 00:41:10 +00:00
LoopStrengthReduce.cpp More dead code removal (using -Wunreachable-code) 2012-01-20 21:51:11 +00:00
LoopUnrollPass.cpp Add -unroll-runtime for unrolling loops with run-time trip counts. 2011-12-09 06:19:40 +00:00
LoopUnswitch.cpp Taken into account Duncan's comments for r149481 dated by 2nd Feb 2012: 2012-03-08 07:06:20 +00:00
LowerAtomic.cpp Remove the old atomic instrinsics. autoupgrade functionality is included with this patch. 2011-10-06 23:20:49 +00:00
Makefile make -fno-rtti the default unless a directory builds with REQUIRES_RTTI. 2010-01-24 20:43:08 +00:00
MemCpyOptimizer.cpp Fix various issues (or do cleanups) found by enabling certain MSVC warnings. 2012-02-13 06:30:56 +00:00
ObjCARC.cpp Fix an iterator invalidation problem. operator[] on a DenseMap 2012-03-02 01:26:46 +00:00
Reassociate.cpp Silence a bunch (but not all) "variable written but not read" warnings 2011-08-12 14:54:45 +00:00
Reg2Mem.cpp Fix a ton of comment typos found by codespell. Patch by 2011-04-15 05:18:47 +00:00
Scalar.cpp Add a new ObjC ARC optimization pass to eliminate unneeded 2012-01-17 20:52:24 +00:00
ScalarReplAggregates.cpp Reflow code, no functionality change. 2012-02-23 17:42:19 +00:00
SCCP.cpp Taken into account Duncan's comments for r149481 dated by 2nd Feb 2012: 2012-03-08 07:06:20 +00:00
SimplifyCFGPass.cpp Convert CallInst and InvokeInst APIs to use ArrayRef. 2011-07-15 08:37:34 +00:00
SimplifyLibCalls.cpp reapply the patches reverted in r149470 that reenable ConstantDataArray, 2012-02-05 02:29:43 +00:00
Sink.cpp Move Instruction::isSafeToSpeculativelyExecute out of VMCore and 2011-12-14 23:49:11 +00:00
TailRecursionElimination.cpp Correct over-zealous removal of hack. 2011-10-17 18:43:40 +00:00