Add the loop end location to the loop metadata. This additional information
can be used to improve the locations when generating remarks for loops.
Depends on the companion LLVM change r286227.
Patch by Florian Hahn.
Differential Revision: https://reviews.llvm.org/D25764
llvm-svn: 286456
diff --git a/clang/test/CodeGenCXX/debug-info-loops.cpp b/clang/test/CodeGenCXX/debug-info-loops.cpp
new file mode 100644
index 0000000..69948ea
--- /dev/null
+++ b/clang/test/CodeGenCXX/debug-info-loops.cpp
@@ -0,0 +1,49 @@
+// RUN: %clang -g -gcolumn-info -std=c++11 -S -emit-llvm %s -o - | FileCheck %s
+extern int v[2];
+int a = 0, b = 0;
+int main() {
+#line 100
+ for (int x : v) {
+ if (x)
+ ++b;
+ else
+ ++a;
+ }
+
+ // CHECK: br label {{.*}}, !dbg [[DBG1:![0-9]*]], !llvm.loop [[L1:![0-9]*]]
+
+#line 200
+ while (a)
+ if (b)
+ ++b;
+ else
+ ++a;
+ // CHECK: br label {{.*}}, !dbg [[DBG2:![0-9]*]], !llvm.loop [[L2:![0-9]*]]
+
+#line 300
+ for (unsigned i = 0; i < 100; i++) {
+ a++;
+ for (int y : v)
+ ++b;
+ }
+
+ // CHECK: br label {{.*}}, !dbg [[DBG3:![0-9]*]], !llvm.loop [[L3:![0-9]*]]
+ // CHECK: br label {{.*}}, !dbg [[DBG3:![0-9]*]], !llvm.loop [[L4:![0-9]*]]
+
+
+ // CHECK-DAG: [[L1]] = distinct !{[[L1]], [[SLDBG1:![0-9]*]], [[ELDBG1:![0-9]*]]}
+ // CHECK-DAG: [[SLDBG1]] = !DILocation(line: 100, column: 3, scope: !{{.*}})
+ // CHECK-DAG: [[ELDBG1]] = !DILocation(line: 105, column: 3, scope: !{{.*}})
+
+ // CHECK-DAG: [[L2]] = distinct !{[[L2]], [[SLDBG2:![0-9]*]], [[ELDBG2:![0-9]*]]}
+ // CHECK-DAG: [[SLDBG2]] = !DILocation(line: 200, column: 3, scope: !{{.*}})
+ // CHECK-DAG: [[ELDBG2]] = !DILocation(line: 204, column: 9, scope: !{{.*}})
+
+ // CHECK-DAG: [[L3]] = distinct !{[[L3]], [[SLDBG3:![0-9]*]], [[ELDBG3:![0-9]*]]}
+ // CHECK-DAG: [[SLDBG3]] = !DILocation(line: 302, column: 5, scope: !{{.*}})
+ // CHECK-DAG: [[ELDBG3]] = !DILocation(line: 303, column: 9, scope: !{{.*}})
+ //
+ // CHECK-DAG: [[L4]] = distinct !{[[L4]], [[SLDBG4:![0-9]*]], [[ELDBG4:![0-9]*]]}
+ // CHECK-DAG: [[SLDBG4]] = !DILocation(line: 300, column: 3, scope: !{{.*}})
+ // CHECK-DAG: [[ELDBG4]] = !DILocation(line: 304, column: 3, scope: !{{.*}})
+}