rnk added a subscriber: echristo.
rnk added inline comments.
================
Comment at: clang/lib/CodeGen/CGStmt.cpp:38
+InhibitDebugLocation CodeGenFunction::EmitStmtStopPoint(const Stmt *S) {
+ InhibitDebugLocation IDL;
----------------
"Stop point" is a hold-over from the llvm.dbg.stoppoint, which doesn't exist
anymore:
http://releases.llvm.org/2.6/docs/SourceLevelDebugging.html#format_common_stoppoint
@echristo renamed CGDebugInfo::EmitStopPoint to EmitLocation long ago, and we
should do the same for CodeGenFunction::EmitStopPoint. I'd like to have
something like `EmitStmtLocation` and `EmitExprLocation`.
================
Comment at: clang/lib/CodeGen/CGStmt.cpp:45
+ }
+ return IDL;
+}
----------------
Does MSVC accept this? I think it will emit the copy ctor call in an -O0 build.
================
Comment at: clang/lib/CodeGen/CGStmt.cpp:145
case Stmt::IfStmtClass: EmitIfStmt(cast<IfStmt>(*S));
break;
case Stmt::WhileStmtClass: EmitWhileStmt(cast<WhileStmt>(*S));
break;
----------------
Doesn't this end up recursing? Won't InhibitDebugLocation prevent us from
applying the inner statement locations?
================
Comment at: clang/test/CodeGenCXX/debug-info-nested-exprs.cpp:12
+
+// NONEST: call i32 @{{.*}}bar{{.*}}, !dbg ![[LOC:[0-9]+]]
+// NONEST: call i32 @{{.*}}baz{{.*}}, !dbg ![[LOC]]
----------------
This is pretty painful to test. :(
If we let ourselves do an asm test, .cv_loc is printed with some nice assembly
comments that make this testing easy.
================
Comment at: clang/test/CodeGenCXX/debug-info-nested-exprs.cpp:48
+ (y * z);
+}
----------------
I'd like to see some compound statement tests: for, while, if, regular braces,
etc.
https://reviews.llvm.org/D37529
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