ld64-274.2.tar.gz

diff --git a/src/ld/parsers/lto_file.cpp b/src/ld/parsers/lto_file.cpp
index a5ab8217bc268d2f491ffd5775c3c8b4cda7db93..650fd4eff78727d272802604cdacda15427f4ed1 100644 (file)
--- a/src/ld/parsers/lto_file.cpp
+++ b/src/ld/parsers/lto_file.cpp
@@ -1307,10 +1307,6 @@ bool Parser::optimizeThinLTO(const std::vector<File*>&              files,
                // mach-o parsing is done in-memory, but need path for debug notes
                std::string tmp_path = macho_dirpath + "/" + std::to_string(bufID) + ".o";
 
-               // parse generated mach-o file into a MachOReader
-               ld::relocatable::File* machoFile = parseMachOFile((const uint8_t *)machOFile.Buffer, machOFile.Size, tmp_path, options, ordinal);
-               ordinal = ordinal.nextFileListOrdinal();
-
                // if needed, save temp mach-o file to specific location
                if ( options.tmpObjectFilePath != NULL ) {
                        int fd = ::open(tmp_path.c_str(), O_CREAT | O_WRONLY | O_TRUNC, 0666);
@@ -1323,6 +1319,10 @@ bool Parser::optimizeThinLTO(const std::vector<File*>&              files,
                        }
                }
 
+               // parse generated mach-o file into a MachOReader
+               ld::relocatable::File* machoFile = parseMachOFile((const uint8_t *)machOFile.Buffer, machOFile.Size, tmp_path, options, ordinal);
+               ordinal = ordinal.nextFileListOrdinal();
+
                // Load the generated MachO file
                loadMachO(machoFile, options, handler, newAtoms, additionalUndefines, llvmAtoms, deadllvmAtoms);
        }

diff --git a/unit-tests/test-cases/dwarf-debug-notes-lto/Makefile b/unit-tests/test-cases/dwarf-debug-notes-lto/Makefile
new file mode 100644 (file)
index 0000000..b498430
--- /dev/null
+++ b/unit-tests/test-cases/dwarf-debug-notes-lto/Makefile
@@ -0,0 +1,54 @@
+##
+# Copyright (c) 2005-2010 Apple Inc. All rights reserved.
+#
+# @APPLE_LICENSE_HEADER_START@
+# 
+# This file contains Original Code and/or Modifications of Original Code
+# as defined in and that are subject to the Apple Public Source License
+# Version 2.0 (the 'License'). You may not use this file except in
+# compliance with the License. Please obtain a copy of the License at
+# http://www.opensource.apple.com/apsl/ and read it before using this
+# file.
+# 
+# The Original Code and all software distributed under the License are
+# distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+# EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+# INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+# Please see the License for the specific language governing rights and
+# limitations under the License.
+# 
+# @APPLE_LICENSE_HEADER_END@
+##
+TESTROOT = ../..
+include ${TESTROOT}/include/common.makefile
+
+#
+# The point of this test is a sanity check that ld
+# produces good "debug notes" stabs from dwarf .o files
+# Running nm through stabs-filter.pl produces connonical stabs
+# that can be diffed against a checked in know good set of stabs
+#
+
+run: all
+
+all:
+       ${CXX} ${CCXXFLAGS} -flto -gdwarf-2 hello.cxx -c -o hello.o
+       ${CXX} ${CCXXFLAGS} -flto -gdwarf-2 other.cxx -c -o other.o
+       ${CXX} ${CCXXFLAGS} -flto  -gdwarf-2 hello.o other.o -o hello -Wl,-object_path_lto,lto.o
+       ${FAIL_IF_BAD_MACHO} hello
+       # Check that we have a non zero timestamp in the debug note
+       nm -ap hello | grep '^[0-9a-z]*[1-9a-z][0-9a-z]* .*OSO.*lto.o$$' | ${FAIL_IF_EMPTY}
+
+    # Same for Incremental LTO now
+       ${CXX} ${CCXXFLAGS} -flto=thin -gdwarf-2 hello.cxx -c -o hello.o
+       ${CXX} ${CCXXFLAGS} -flto=thin -gdwarf-2 other.cxx -c -o other.o
+       ${CXX} ${CCXXFLAGS} -flto=thin  -gdwarf-2 hello.o other.o -o hello.thin -Wl,-object_path_lto,thinlto.o
+       ${FAIL_IF_BAD_MACHO} hello.thin
+       # Check that we have a non zero timestamp in the debug note
+       nm -ap hello.thin | grep '^[0-9a-z]*[1-9a-z][0-9a-z]* .*OSO.*thinlto.o/0.o$$' | ${FAIL_IF_EMPTY}
+       nm -ap hello.thin | grep '^[0-9a-z]*[1-9a-z][0-9a-z]* .*OSO.*thinlto.o/1.o$$' | ${FAIL_IF_EMPTY}
+
+
+clean:
+       rm -rf hello hello.thin hello.o other.o lto.o thinlto.o

diff --git a/unit-tests/test-cases/dwarf-debug-notes-lto/header.h b/unit-tests/test-cases/dwarf-debug-notes-lto/header.h
new file mode 100644 (file)
index 0000000..aa960dd
--- /dev/null
+++ b/unit-tests/test-cases/dwarf-debug-notes-lto/header.h
@@ -0,0 +1,8 @@
+
+
+inline int foo(int x) 
+{ 
+       return x + 10;
+}
+
+extern int bar(int x);
\ No newline at end of file

diff --git a/unit-tests/test-cases/dwarf-debug-notes-lto/hello.cxx b/unit-tests/test-cases/dwarf-debug-notes-lto/hello.cxx
new file mode 100644 (file)
index 0000000..0d508e1
--- /dev/null
+++ b/unit-tests/test-cases/dwarf-debug-notes-lto/hello.cxx
@@ -0,0 +1,33 @@
+/* -*- mode: C++; c-basic-offset: 4; tab-width: 4 -*- 
+ *
+ * Copyright (c) 2005 Apple Computer, Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ * 
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ * 
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ * 
+ * @APPLE_LICENSE_HEADER_END@
+ */
+#include <stdio.h>
+
+#include "header.h"
+
+
+int main()
+{
+       foo(bar(3));
+       fprintf(stdout, "hello\n");
+}
\ No newline at end of file

diff --git a/unit-tests/test-cases/dwarf-debug-notes-lto/other.cxx b/unit-tests/test-cases/dwarf-debug-notes-lto/other.cxx
new file mode 100644 (file)
index 0000000..a6b403b
--- /dev/null
+++ b/unit-tests/test-cases/dwarf-debug-notes-lto/other.cxx
@@ -0,0 +1,27 @@
+
+#include "header.h"
+
+int uninit;
+int init = 1;
+static int custom __asm__(".my_non_standard_name") = 1;
+static int suninit;
+static int sinit=0;
+static int scustominit __asm__(".my_non_standard_name_static") = 1;
+
+int bar(int x)
+{
+       static int bar_uninit;
+       static int bar_init=3;
+       bar_uninit = x;
+       scustominit = x;
+       custom = x;
+       return 20 + suninit + sinit +
+               bar_init + bar_uninit + foo(x);
+}
+
+extern void disappear() __asm__("lbegone");
+void disappear() {}
+
+extern void foo() __asm__(".my_non_standard_function_name");
+void foo() { disappear(); }
+