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DebugInfo: Require a DebugLoc in DIBuilder::insertDeclare()

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Change `DIBuilder::insertDeclare()` and `insertDbgValueIntrinsic()` to
take an `MDLocation*`/`DebugLoc` parameter which it attaches to the
created intrinsic.  Assert at creation time that the `scope:` field's
subprogram matches the variable's.  There's a matching `clang` commit to
use the API.

The context for this is PR22778, which is removing the `inlinedAt:`
field from `MDLocalVariable`, instead deferring to the `!dbg` location
attached to the debug info intrinsic.  The best way to ensure we always
have a `!dbg` attachment is to require one at creation time.  I'll be
adding verifier checks next, but this API change is the best way to
shake out frontend bugs.

Note: I added an `llvm_unreachable()` in `bindings/go` and passed in
`nullptr` for the `DebugLoc`.  The `llgo` folks will eventually need to
pass a valid `DebugLoc` here.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235041 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan P. N. Exon Smith
2015-04-15 21:18:07 +00:00
parent 666ef776b3
commit cb334476f1
7 changed files with 74 additions and 38 deletions
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6
unittests/Transforms/Utils/Cloning.cpp
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@ -255,8 +255,10 @@ protected:
DIExpression E = DBuilder.createExpression();
DIVariable Variable = DBuilder.createLocalVariable(
dwarf::DW_TAG_auto_variable, Subprogram, "x", File, 5, IntType, true);
DBuilder.insertDeclare(Alloca, Variable, E, Store);
DBuilder.insertDbgValueIntrinsic(AllocaContent, 0, Variable, E, Terminator);
auto *DL = MDLocation::get(Subprogram->getContext(), 5, 0, Subprogram);
DBuilder.insertDeclare(Alloca, Variable, E, DL, Store);
DBuilder.insertDbgValueIntrinsic(AllocaContent, 0, Variable, E, DL,
Terminator);
// Finalize the debug info
DBuilder.finalize();