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[IR] Redesign the case iterator in SwitchInst to actually be an iterator

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and to expose a handle to represent the actual case rather than having
the iterator return a reference to itself.

All of this allows the iterator to be used with common STL facilities,
standard algorithms, etc.

Doing this exposed some missing facilities in the iterator facade that
I've fixed and required some work to the actual iterator to fully
support the necessary API.

Differential Revision: https://reviews.llvm.org/D31548

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@300032 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chandler Carruth
2017-04-12 07:27:28 +00:00
parent 00b79068c4
commit ddfada260a
28 changed files with 296 additions and 198 deletions
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2
lib/Bitcode/Writer/BitcodeWriter.cpp
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@@ -2578,7 +2578,7 @@ void ModuleBitcodeWriter::writeInstruction(const Instruction &I,
Vals.push_back(VE.getTypeID(SI.getCondition()->getType()));
pushValue(SI.getCondition(), InstID, Vals);
Vals.push_back(VE.getValueID(SI.getDefaultDest()));
for (SwitchInst::ConstCaseIt Case : SI.cases()) {
for (auto Case : SI.cases()) {
Vals.push_back(VE.getValueID(Case.getCaseValue()));
Vals.push_back(VE.getValueID(Case.getCaseSuccessor()));
}