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Verifier: Check operands of MDType subclasses and MDCompileUnit

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Add verify checks for `MDType` subclasses and for `MDCompileUnit`.
These new checks don't yet incorporate everything from `Verify()`, but
at least they sanity check the operands.  Also downcast accessors as
possible.

A lot of these accessors can't be downcast as far as we'd like because
of arrays of typed objects (stored in a generic `MDTuple`) and
`MDString`-based type references.  Eventually I'll port over `DIRef<>`
and `DITypedArray<>` from `DebugInfo.h` to clean those up as well.

Updated bitrotted testcases separately in r233415 and r233443 to reduce
churn on the off-chance this needs to be reverted.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@233446 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan P. N. Exon Smith
2015-03-27 23:05:04 +00:00
parent 6ed3a762fc
commit b943370653
7 changed files with 278 additions and 154 deletions
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10
include/llvm/IR/DIBuilder.h
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@@ -57,11 +57,11 @@ namespace llvm {
Module &M;
LLVMContext &VMContext;
MDNode *TempEnumTypes;
MDNode *TempRetainTypes;
MDNode *TempSubprograms;
MDNode *TempGVs;
MDNode *TempImportedModules;
MDTuple *TempEnumTypes;
MDTuple *TempRetainTypes;
MDTuple *TempSubprograms;
MDTuple *TempGVs;
MDTuple *TempImportedModules;
Function *DeclareFn; // llvm.dbg.declare
Function *ValueFn; // llvm.dbg.value