Make debugging information usable. This is barebones, but it makes -g
actually work (instead of crashing llc), and there's enough info emitted
to get line number information in gdb. This should hopefully be helpful
for debugging non-working programs.
I got rid of the begin/endregion calls because the implementation wasn't
working; someone who knows the debugging info a bit better might try to
add it. I really have no clue how a compiler is supposed to emit them.
This commit shouldn't have any effect without -g.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@51404 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CodeGenFunction.cpp b/lib/CodeGen/CodeGenFunction.cpp
index e4332f6..b17572c 100644
--- a/lib/CodeGen/CodeGenFunction.cpp
+++ b/lib/CodeGen/CodeGenFunction.cpp
@@ -13,6 +13,7 @@
#include "CodeGenFunction.h"
#include "CodeGenModule.h"
+#include "CGDebugInfo.h"
#include "clang/Basic/TargetInfo.h"
#include "clang/AST/AST.h"
#include "llvm/CallingConv.h"
@@ -197,7 +198,16 @@
EntryBB);
Builder.SetInsertPoint(EntryBB);
-
+
+ CGDebugInfo *DI = CGM.getDebugInfo();
+ if (DI) {
+ CompoundStmt* body = cast<CompoundStmt>(CurFuncDecl->getBody());
+ if (body->getLBracLoc().isValid()) {
+ DI->setLocation(body->getLBracLoc());
+ }
+ DI->EmitFunctionStart(CurFn, Builder);
+ }
+
// Emit allocs for param decls. Give the LLVM Argument nodes names.
llvm::Function::arg_iterator AI = CurFn->arg_begin();
@@ -221,6 +231,15 @@
if (isDummyBlock(BB))
BB->eraseFromParent();
else {
+ CGDebugInfo *DI = CGM.getDebugInfo();
+ if (DI) {
+ CompoundStmt* body = cast<CompoundStmt>(CurFuncDecl->getBody());
+ if (body->getRBracLoc().isValid()) {
+ DI->setLocation(body->getRBracLoc());
+ }
+ DI->EmitFunctionEnd(CurFn, Builder);
+ }
+
// FIXME: if this is C++ main, this should return 0.
if (CurFn->getReturnType() == llvm::Type::VoidTy)
Builder.CreateRetVoid();