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

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.

llvm-svn: 235041

1 files changed, 4 insertions, 2 deletions

diff --git a/llvm/unittests/Transforms/Utils/Cloning.cpp b/llvm/unittests/Transforms/Utils/Cloning.cpp
index 807a2f03152..b56d453997f 100644
--- a/llvm/unittests/Transforms/Utils/Cloning.cpp
+++ b/llvm/unittests/Transforms/Utils/Cloning.cpp
@@ -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();