Yes, revision 246985
<http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGExpr.cpp?diff_format=h&revision=246985&view=markup>
broke th debug info for types in explicit casts.
Best regards,
Alexey Bataev
=============
Software Engineer
Intel Compiler Team
09.10.2015 18:26, David Blaikie пишет:
On Fri, Oct 9, 2015 at 2:26 AM, Alexey Bataev via cfe-commits
<cfe-commits@lists.llvm.org <mailto:cfe-commits@lists.llvm.org>> wrote:
ABataev created this revision.
ABataev added a reviewer: echristo.
ABataev added a subscriber: cfe-commits.
Currently debug info for types used in explicit cast only is not
emitted. It happened after a patch for better alignment handling.
You mean a patch related to alignment regressed this functionality? Do
you have the specific revision number of that change (since it sounds
like you tracked it down)?
This patch fixes this bug.
http://reviews.llvm.org/D13582
Files:
lib/CodeGen/CGExpr.cpp
test/CodeGenCXX/debug-info-explicit-cast.cpp
Index: lib/CodeGen/CGExpr.cpp
===================================================================
--- lib/CodeGen/CGExpr.cpp
+++ lib/CodeGen/CGExpr.cpp
@@ -799,6 +799,10 @@
if (E->getType()->isVariablyModifiedType())
EmitVariablyModifiedType(E->getType());
+ if (isa<ExplicitCastExpr>(CE))
+ if (CGDebugInfo *DI = getDebugInfo())
+ DI->EmitExplicitCastType(E->getType());
+
switch (CE->getCastKind()) {
// Non-converting casts (but not C's implicit conversion from
void*).
case CK_BitCast:
Index: test/CodeGenCXX/debug-info-explicit-cast.cpp
===================================================================
--- test/CodeGenCXX/debug-info-explicit-cast.cpp
+++ test/CodeGenCXX/debug-info-explicit-cast.cpp
@@ -0,0 +1,18 @@
+// RUN: %clangxx -c -target x86_64-unknown-unknown -g %s
-emit-llvm -S -o - | FileCheck %s
+struct Foo {
+ int a;
+ Foo() : a(1){};
+};
+
+struct Bar {
+ int b;
+ Bar() : b(2){};
+};
+
+int main() {
+ Bar *pb = new Bar;
+
+ return reinterpret_cast<Foo *>(pb)->a;
+}
+
+// CHECK: !DICompositeType(tag: DW_TAG_structure_type, name: "Foo",
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