[dsymutil] Fix handling of inlined_subprogram low_pcs

The value of an inlined subprogram low_pc attribute should not
get relocated, but it can happen that it matches the enclosing
function's start address and thus gets the generic treatment.
Special case it to avoid applying the PC offset twice.

llvm-svn: 246406

4 files changed, 33 insertions, 0 deletions

diff --git a/llvm/test/tools/dsymutil/ARM/dummy-debug-map-amr64.map b/llvm/test/tools/dsymutil/ARM/dummy-debug-map-amr64.map
new file mode 100644
index 00000000000..a23e0c34c3f
--- /dev/null
+++ b/llvm/test/tools/dsymutil/ARM/dummy-debug-map-amr64.map
@@ -0,0 +1,15 @@
+# This is a dummy debug map used for some tests where the contents of the
+# map are just an implementation detail. The tests wanting to use that file
+# should put all there object files in an explicitely named sub-directory
+# of Inputs, and they should be named 1.o, 2.o, ...
+# As not finding an object file or symbols isn't a fatal error for dsymutil,
+# you can extend this file with as much object files and symbols as needed.
+
+---
+triple:          'arm64-apple-darwin'
+objects:
+  - filename: 1.o
+    symbols:
+      - { sym: _bar, objAddr: 0x0, binAddr: 0x10000, size: 0x10 }
+...
+
diff --git a/llvm/test/tools/dsymutil/ARM/inlined-low_pc.c b/llvm/test/tools/dsymutil/ARM/inlined-low_pc.c
new file mode 100644
index 00000000000..7ade33e3e44
--- /dev/null
+++ b/llvm/test/tools/dsymutil/ARM/inlined-low_pc.c
@@ -0,0 +1,15 @@
+/* Compiled with: clang -arch=arm64 -O2 -g -c inlined_low_pc.c */
+
+static int foo(int i) { return 42 + i; }
+int bar(int a) { return foo(a); }
+
+// RUN: llvm-dsymutil -f -y %p/dummy-debug-map-amr64.map -oso-prepend-path %p/../Inputs/inlined-low_pc -o - | llvm-dwarfdump - | FileCheck %s
+
+// CHECK: DW_TAG_subprogram
+// CHECK: DW_AT_low_pc{{.*}}0x0000000000010000
+// CHECK: DW_AT_name{{.*}}"bar"
+// CHECK-NOT: NULL
+// CHECK: DW_TAG_inlined_subroutine
+// CHECK-NEXT: DW_AT_abstract_origin{{.*}}"foo"
+// CHECK-NEXT: DW_AT_low_pc{{.*}}0x0000000000010000
+
diff --git a/llvm/test/tools/dsymutil/ARM/lit.local.cfg b/llvm/test/tools/dsymutil/ARM/lit.local.cfg
index b704ac4031f..442cd554bfe 100644
--- a/llvm/test/tools/dsymutil/ARM/lit.local.cfg
+++ b/llvm/test/tools/dsymutil/ARM/lit.local.cfg
@@ -2,3 +2,6 @@ if not 'ARM' in config.root.targets:
     config.unsupported = True
 if not 'AArch64' in config.root.targets:
     config.unsupported = True
+
+config.suffixes = ['.test', '.cpp', '.c']
+
diff --git a/llvm/test/tools/dsymutil/Inputs/inlined-low_pc/1.o b/llvm/test/tools/dsymutil/Inputs/inlined-low_pc/1.o
new file mode 100644
index 00000000000..7ab4e9205bb
--- /dev/null
+++ b/llvm/test/tools/dsymutil/Inputs/inlined-low_pc/1.o