"Fix" a problem with debug info in the presence of always_inline
function calls. For a program like this:
#include <stdio.h>
static __inline__ __attribute__((always_inline))
int bar(int x) { return 4; }
int main() {
int X = bar(4);
printf("%d\n", X);
}
clang was not outputing any debug info for the body of main(). This is
because the backend is getting confused by the region_start/end that clang
is emitting for block scopes. For now, just disable these (matching llvm-gcc),
this stuff is in progress of rework anyway.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70889 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGStmt.cpp b/lib/CodeGen/CGStmt.cpp
index 441047e..7f73c88 100644
--- a/lib/CodeGen/CGStmt.cpp
+++ b/lib/CodeGen/CGStmt.cpp
@@ -126,7 +126,10 @@
if (DI) {
EnsureInsertPoint();
DI->setLocation(S.getLBracLoc());
- DI->EmitRegionStart(CurFn, Builder);
+ // FIXME: The llvm backend is currently not ready to deal with region_end
+ // for block scoping. In the presence of always_inline functions it gets so
+ // confused that it doesn't emit any debug info. Just disable this for now.
+ //DI->EmitRegionStart(CurFn, Builder);
}
// Keep track of the current cleanup stack depth.
@@ -141,7 +144,11 @@
if (DI) {
EnsureInsertPoint();
DI->setLocation(S.getRBracLoc());
- DI->EmitRegionEnd(CurFn, Builder);
+
+ // FIXME: The llvm backend is currently not ready to deal with region_end
+ // for block scoping. In the presence of always_inline functions it gets so
+ // confused that it doesn't emit any debug info. Just disable this for now.
+ //DI->EmitRegionEnd(CurFn, Builder);
}
RValue RV;