Richard,
I have updated my patch for incremental linking into LTO bytecode, but it now
breaks in
dwarf2out:
lto1: internal compiler error: in dwarf2out_die_ref_for_decl, at
dwarf2out.c:5859
0x5d8a37 dwarf2out_die_ref_for_decl
../../gcc/dwarf2out.c:5858
0xa8c311 lto_write_tree_1
../../gcc/lto-streamer-out.c:423
0xa9539c lto_write_tree
../../gcc/lto-streamer-out.c:449
0xa9539c lto_output_tree_1
../../gcc/lto-streamer-out.c:483
0xa9539c DFS::DFS(output_block*, tree_node*, bool, bool, bool)
../../gcc/lto-streamer-out.c:670
0xa9656d lto_output_tree(output_block*, tree_node*, bool, bool)
../../gcc/lto-streamer-out.c:1642
0xa8c128 write_global_stream
../../gcc/lto-streamer-out.c:2496
0xa946be lto_output_decl_state_streams(output_block*, lto_out_decl_state*)
../../gcc/lto-streamer-out.c:2543
0xa946be produce_asm_for_decls()
../../gcc/lto-streamer-out.c:2870
0xaf1d3f write_lto
../../gcc/passes.c:2613
0xaf52fe ipa_write_summaries_1
../../gcc/passes.c:2674
0xaf52fe ipa_write_summaries()
../../gcc/passes.c:2734
0x8052e2 ipa_passes
../../gcc/cgraphunit.c:2470
0x8052e2 symbol_table::compile()
../../gcc/cgraphunit.c:2562
0x7701e7 lto_main()
../../gcc/lto/lto.c:3388
I guess that is early debug info. This happens in quite few testcases with the
patch
attached. I wonder how we should proceed with this one?
* lto-plugin.c: Document options; add -linker-output-known;
determine when to use rel and when nolto-rel output.
* lto-wrapper.c (run_gcc): Look for -flinker-output=rel also in the
list of options passed from the driver.
* passes.c (ipa_write_summaries): Only modify statements if body
is in memory.
* cgrpahunit.c (ipa_passes): Also produce intermeidate code when
incrementally linking.
(ipa_passes): LIkewise.
* lto-cgraph.c (lto_output_node): When incrementally linking do not
pass down resolution info.
* common.opt (flag_incremental_link): Update info.
* gcc.c (plugin specs): Turn flinker-output=* to
-plugin-opt=-linker-output-known
* toplev.c (compile_file): Also cut compilation when doing incremental
link.
* flag-types. (enum lto_partition_model): Add
LTO_LINKER_OUTPUT_NOLTOREL.
(invoke.texi): Add -flinker-output docs.
* lang.opt (lto_linker_output): Add nolto-rel.
* lto-lang.c (lto_post_options): Handle LTO_LINKER_OUTPUT_REL
and LTO_LINKER_OUTPUT_NOLTOREL:.
(lto_init): Generate lto when doing incremental link.
* gcc.dg/lto/20081120-2_0.c: Add -flinker-output=nolto-rel
* gcc.dg/lto/20090126-1_0.c: Likewise.
* gcc.dg/lto/20091020-2_0.c: Likewise.
* gcc.dg/lto/20081204-2_0.c: Likewise.
* gcc.dg/lto/20091015-1_0.c: Likewise.
* gcc.dg/lto/20090126-2_0.c: Likewiwe.
* gcc.dg/lto/20090116_0.c: Likewise.
* gcc.dg/lto/20081224_0.c: Likewise.
* gcc.dg/lto/20091027-1_0.c: Likewise.
* gcc.dg/lto/20090219_0.c: Likewise.
* gcc.dg/lto/20081212-1_0.c: Likewise.
* gcc.dg/lto/20091013-1_0.c: Likewise.
* gcc.dg/lto/20081126_0.c: Likewise.
* gcc.dg/lto/20090206-1_0.c: Likewise.
* gcc.dg/lto/20091016-1_0.c: Likewise.
* gcc.dg/lto/20081120-1_0.c: Likewise.
* gcc.dg/lto/20091020-1_0.c: Likewise.
* gcc.dg/lto/20100426_0.c: Likewise.
* gcc.dg/lto/20081204-1_0.c: Likewise.
* gcc.dg/lto/20091014-1_0.c: Likewise.
* g++.dg/lto/20081109-1_0.C: Likewise.
* g++.dg/lto/20100724-1_0.C: Likewise.
* g++.dg/lto/20081204-1_0.C: Likewise.
* g++.dg/lto/pr45679-2_0.C: Likewise.
* g++.dg/lto/20110311-1_0.C: Likewise.
* g++.dg/lto/20090302_0.C: Likewise.
* g++.dg/lto/20081118_0.C: Likewise.
* g++.dg/lto/20091002-2_0.C: Likewise.
* g++.dg/lto/20081120-2_0.C: Likewise.
* g++.dg/lto/20081123_0.C: Likewise.
* g++.dg/lto/20090313_0.C: Likewise.
* g++.dg/lto/pr54625-1_0.c: Likewise.
* g++.dg/lto/pr48354-1_0.C: Likewise.
* g++.dg/lto/20081219_0.C: Likewise.
* g++.dg/lto/pr48042_0.C: Likewise.
* g++.dg/lto/20101015-2_0.C: Likewise.
* g++.dg/lto/pr45679-1_0.C: Likewise.
* g++.dg/lto/20091026-1_0.C: Likewise.
* g++.dg/lto/pr45621_0.C: Likewise.
* g++.dg/lto/20081119-1_0.C: Likewise.
* g++.dg/lto/20101010-4_0.C: Likewise.
* g++.dg/lto/20081120-1_0.C: Likewise.
* g++.dg/lto/20091002-1_0.C: Likewise.
* g++.dg/lto/20091002-3_0.C: Likewise.
* gfortran.dg/lto/20091016-1_0.f90: Likewise.
* gfortran.dg/lto/pr47839_0.f90: Likewise.
* gfortran.dg/lto/pr46911_0.f: Likewise.
* gfortran.dg/lto/20091028-1_0.f90: Likewise.
* gfortran.dg/lto/20091028-2_0.f90: Likewise.
Index: gcc/cgraphunit.c
===================================================================
--- gcc/cgraphunit.c (revision 259789)
+++ gcc/cgraphunit.c (working copy)
@@ -2452,8 +2452,10 @@
if (flag_generate_lto || flag_generate_offload)
targetm.asm_out.lto_start ();
- if (!in_lto_p)
+ if (!in_lto_p || flag_incremental_link == 2)
{
+ if (!quiet_flag)
+ fprintf (stderr, "Streaming LTO\n");
if (g->have_offload)
{
section_name_prefix = OFFLOAD_SECTION_NAME_PREFIX;
@@ -2472,7 +2474,9 @@
if (flag_generate_lto || flag_generate_offload)
targetm.asm_out.lto_end ();
- if (!flag_ltrans && (in_lto_p || !flag_lto || flag_fat_lto_objects))
+ if (!flag_ltrans
+ && ((in_lto_p && flag_incremental_link != 2)
+ || !flag_lto || flag_fat_lto_objects))
execute_ipa_pass_list (passes->all_regular_ipa_passes);
invoke_plugin_callbacks (PLUGIN_ALL_IPA_PASSES_END, NULL);
@@ -2559,7 +2563,8 @@
/* Do nothing else if any IPA pass found errors or if we are just streaming
LTO. */
if (seen_error ()
- || (!in_lto_p && flag_lto && !flag_fat_lto_objects))
+ || ((!in_lto_p || flag_incremental_link == 2)
+ && flag_lto && !flag_fat_lto_objects))
{
timevar_pop (TV_CGRAPHOPT);
return;
Index: gcc/common.opt
===================================================================
--- gcc/common.opt (revision 259789)
+++ gcc/common.opt (working copy)
@@ -48,7 +48,8 @@
; This variable is set to non-0 only by LTO front-end. 1 indicates that
; the output produced will be used for incrmeental linking (thus weak symbols
-; can still be bound).
+; can still be bound) and 2 indicates that the IL is going to be linked and
+; and output to LTO object file.
Variable
int flag_incremental_link = 0
Index: gcc/doc/invoke.texi
===================================================================
--- gcc/doc/invoke.texi (revision 259789)
+++ gcc/doc/invoke.texi (working copy)
@@ -12238,6 +12238,50 @@
object file names should not be used as arguments. @xref{Overall
Options}.
+@item -flinker-output=@var{type}
+@opindex -flinker-output
+This option controls the code generation of the link time optimizer. By
+default the linker output is determined by the linker plugin automatically. For
+debugging the compiler and in the case of incremental linking it may be useful
+to control the type manually.
+
+If @var{type} is @samp{exec} the code generation is configured to produce
static
+binary. In this case @option{-fpic} and @option{-fpie} are both disabled.
+
+If @var{type} is @samp{dyn} the code generation is configured to produce shared
+library. In this case @option{-fpic} or @option{-fPIC} is preserved. These
+options arenot implied to make it possible to build static libraries without
+position independent code on architectures this is possible, i.e. on x86.
+
+If @var{type} is @samp{pie} the code generation is configured to produce
+@option{-fpie} executable. This result in similar optimizations as @samp{exec}
+except that @option{-fpie} is not disabled if specified at compilation time.
+
+If @var{type} is @samp{rel} the compiler assumes that incremental linking is
+done. The sections containing intermediate code for link-time optimization are
+merged, pre-optimized, and output to the resulting object file. In addition if
+@option{-ffat-lto-objects} is specified the binary code is produced for future
+non-lto linking. The object file produced by incremental linking will be
smaller
+than a static library produced from the same object files. At link-time the
+result of incremental linking will also load faster to compiler than a static
+library assuming that majority of objects in the library are used.
+
+Finally @samp{nolto-rel} configure compiler to for incremental linking where
+code generation is forced, final binary is produced and the intermediate code
+for later link-time optimization is stripped. When multiple object files are
+linked together the resulting code will be optimized better than with link time
+optimizations disabled (for example, the cross-module inlining will happen),
+most of benefits of whole program optimizations are however lost.
+
+During the incremental link (by @option{-r}) the linker plugin will default to
+@option{rel}. With current interfaces to GNU Binutils it is however not
+possible to link incrementally LTO objects and non-LTO objects into a single
+mixed object file. In the case any of object files in incremental link can not
+be used for link-time optimization the linker plugin will output warning and
+use @samp{nolto-rel}. To maintain the whole program optimization it is
+recommended to link such objects into static library instead. Alternatively it
+is possible to use H.J. Lu's binutils with support for mixed objects.
+
@item -fuse-ld=bfd
@opindex fuse-ld=bfd
Use the @command{bfd} linker instead of the default linker.
Index: gcc/flag-types.h
===================================================================
--- gcc/flag-types.h (revision 259789)
+++ gcc/flag-types.h (working copy)
@@ -289,6 +289,7 @@
enum lto_linker_output {
LTO_LINKER_OUTPUT_UNKNOWN,
LTO_LINKER_OUTPUT_REL,
+ LTO_LINKER_OUTPUT_NOLTOREL,
LTO_LINKER_OUTPUT_DYN,
LTO_LINKER_OUTPUT_PIE,
LTO_LINKER_OUTPUT_EXEC
Index: gcc/gcc.c
===================================================================
--- gcc/gcc.c (revision 259789)
+++ gcc/gcc.c (working copy)
@@ -961,6 +961,7 @@
-plugin %(linker_plugin_file) \
-plugin-opt=%(lto_wrapper) \
-plugin-opt=-fresolution=%u.res \
+ %{flinker-output=*:-plugin-opt=-linker-output-known} \
%{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}}
\
}" PLUGIN_COND_CLOSE
#else
Index: gcc/lto/lang.opt
===================================================================
--- gcc/lto/lang.opt (revision 259789)
+++ gcc/lto/lang.opt (working copy)
@@ -34,6 +34,9 @@
Enum(lto_linker_output) String(rel) Value(LTO_LINKER_OUTPUT_REL)
EnumValue
+Enum(lto_linker_output) String(nolto-rel) Value(LTO_LINKER_OUTPUT_NOLTOREL)
+
+EnumValue
Enum(lto_linker_output) String(dyn) Value(LTO_LINKER_OUTPUT_DYN)
EnumValue
Index: gcc/lto/lto-lang.c
===================================================================
--- gcc/lto/lto-lang.c (revision 259789)
+++ gcc/lto/lto-lang.c (working copy)
@@ -879,7 +879,27 @@
switch (flag_lto_linker_output)
{
case LTO_LINKER_OUTPUT_REL: /* .o: incremental link producing LTO IL */
+ /* Configure compiler same way as normal frontend would do with -flto:
+ this way we read the trees (declarations & types), symbol table,
+ optimization summaries and link them. Subsequently we output new LTO
+ file. */
+ flag_lto = "";
+ flag_incremental_link = 2;
flag_whole_program = 0;
+ flag_wpa = 0;
+ flag_generate_lto = 1;
+ /* It would be cool to produce .o file directly, but our current
+ simple objects does not contain the lto symbol markers. Go the slow
+ way through the asm file. */
+ lang_hooks.lto.begin_section = lhd_begin_section;
+ lang_hooks.lto.append_data = lhd_append_data;
+ lang_hooks.lto.end_section = lhd_end_section;
+ if (flag_ltrans)
+ error ("-flinker-output=rel and -fltrans are mutually exclussive");
+ break;
+
+ case LTO_LINKER_OUTPUT_NOLTOREL: /* .o: incremental link producing asm */
+ flag_whole_program = 0;
flag_incremental_link = 1;
break;
@@ -1269,7 +1289,7 @@
in_lto_p = true;
/* We need to generate LTO if running in WPA mode. */
- flag_generate_lto = (flag_wpa != NULL);
+ flag_generate_lto = (flag_incremental_link == 2 || flag_wpa != NULL);
/* Create the basic integer types. */
build_common_tree_nodes (flag_signed_char);
Index: gcc/lto-cgraph.c
===================================================================
--- gcc/lto-cgraph.c (revision 259789)
+++ gcc/lto-cgraph.c (working copy)
@@ -540,7 +540,10 @@
bp_pack_value (&bp, node->thunk.thunk_p, 1);
bp_pack_value (&bp, node->parallelized_function, 1);
bp_pack_enum (&bp, ld_plugin_symbol_resolution,
- LDPR_NUM_KNOWN, node->resolution);
+ LDPR_NUM_KNOWN,
+ /* When doing incremental link, we will get new resolution
+ info next time we process the file. */
+ flag_incremental_link ? LDPR_UNKNOWN : node->resolution);
bp_pack_value (&bp, node->instrumentation_clone, 1);
bp_pack_value (&bp, node->split_part, 1);
streamer_write_bitpack (&bp);
Index: gcc/lto-wrapper.c
===================================================================
--- gcc/lto-wrapper.c (revision 259789)
+++ gcc/lto-wrapper.c (working copy)
@@ -1054,6 +1054,7 @@
bool have_offload = false;
unsigned lto_argc = 0, ltoobj_argc = 0;
char **lto_argv, **ltoobj_argv;
+ bool linker_output_rel = false;
bool skip_debug = false;
unsigned n_debugobj;
@@ -1106,9 +1107,12 @@
file_offset = (off_t) loffset;
}
fd = open (filename, O_RDONLY | O_BINARY);
+ /* Linker plugin passes -fresolution and -flinker-output options. */
if (fd == -1)
{
lto_argv[lto_argc++] = argv[i];
+ if (strcmp (argv[i], "-flinker-output=rel") == 0)
+ linker_output_rel = true;
continue;
}
@@ -1173,6 +1177,11 @@
lto_mode = LTO_MODE_WHOPR;
break;
+ case OPT_flinker_output_:
+ linker_output_rel = !strcmp (option->arg, "rel");
+ break;
+
+
default:
break;
}
@@ -1189,6 +1198,9 @@
fputc ('\n', stderr);
}
+ if (linker_output_rel)
+ no_partition = true;
+
if (no_partition)
{
lto_mode = LTO_MODE_LTO;
Index: gcc/passes.c
===================================================================
--- gcc/passes.c (revision 259789)
+++ gcc/passes.c (working copy)
@@ -2708,7 +2708,7 @@
{
struct cgraph_node *node = order[i];
- if (node->has_gimple_body_p ())
+ if (gimple_has_body_p (node->decl))
{
/* When streaming out references to statements as part of some IPA
pass summary, the statements need to have uids assigned and the
Index: gcc/testsuite/g++.dg/lto/20081109-1_0.C
===================================================================
--- gcc/testsuite/g++.dg/lto/20081109-1_0.C (revision 259789)
+++ gcc/testsuite/g++.dg/lto/20081109-1_0.C (working copy)
@@ -1,6 +1,6 @@
// { dg-lto-do link }
// { dg-require-effective-target fpic }
// { dg-lto-options {{-fPIC -flto -flto-partition=1to1}} }
-// { dg-extra-ld-options "-fPIC -flto -flto-partition=1to1 -r -nostdlib
-fno-exceptions" }
+// { dg-extra-ld-options "-fPIC -flto -flto-partition=1to1 -r -nostdlib
-fno-exceptions -flinker-output=nolto-rel" }
void func(); class Foo { };
void bar() { try { func(); } catch (Foo) { } };
Index: gcc/testsuite/g++.dg/lto/20081118_0.C
===================================================================
--- gcc/testsuite/g++.dg/lto/20081118_0.C (revision 259789)
+++ gcc/testsuite/g++.dg/lto/20081118_0.C (working copy)
@@ -1,6 +1,7 @@
/* { dg-lto-do link } */
/* { dg-require-effective-target fpic } */
/* { dg-lto-options {{-fPIC -flto -flto-partition=1to1 -r -nostdlib}} } */
+/* { dg-extra-ld-options "-flinker-output=nolto-rel" } */
/* We used to ICE because of dangling pointers. */
Index: gcc/testsuite/g++.dg/lto/20081119-1_0.C
===================================================================
--- gcc/testsuite/g++.dg/lto/20081119-1_0.C (revision 259789)
+++ gcc/testsuite/g++.dg/lto/20081119-1_0.C (working copy)
@@ -1,6 +1,7 @@
/* { dg-lto-do link } */
/* { dg-require-effective-target fpic } */
/* { dg-lto-options {{-fPIC -flto -flto-partition=1to1 -r -nostdlib}} } */
+/* { dg-extra-ld-options "-flinker-output=nolto-rel" } */
#include "20081119-1.h"
Index: gcc/testsuite/g++.dg/lto/20081120-1_0.C
===================================================================
--- gcc/testsuite/g++.dg/lto/20081120-1_0.C (revision 259789)
+++ gcc/testsuite/g++.dg/lto/20081120-1_0.C (working copy)
@@ -1,5 +1,6 @@
// { dg-lto-do link }
// { dg-lto-options {{-flto -r -nostdlib}} }
+/* { dg-extra-ld-options "-flinker-output=nolto-rel" } */
extern "C"
{
extern __inline __attribute__((__gnu_inline__)) int pthread_equal(int, int)
Index: gcc/testsuite/g++.dg/lto/20081120-2_0.C
===================================================================
--- gcc/testsuite/g++.dg/lto/20081120-2_0.C (revision 259789)
+++ gcc/testsuite/g++.dg/lto/20081120-2_0.C (working copy)
@@ -1,5 +1,6 @@
// { dg-lto-do link }
// { dg-lto-options {{-flto -r -nostdlib}} }
+/* { dg-extra-ld-options "-flinker-output=nolto-rel" } */
template < typename > struct Foo
{
inline void rdstate() {
Index: gcc/testsuite/g++.dg/lto/20081123_0.C
===================================================================
--- gcc/testsuite/g++.dg/lto/20081123_0.C (revision 259789)
+++ gcc/testsuite/g++.dg/lto/20081123_0.C (working copy)
@@ -1,6 +1,7 @@
// { dg-lto-do link }
// { dg-require-effective-target fpic }
// { dg-lto-options {{-flto -flto-partition=1to1 -r -nostdlib -fPIC}} }
+/* { dg-extra-ld-options "-flinker-output=nolto-rel" } */
int
f(void)
Index: gcc/testsuite/g++.dg/lto/20081204-1_0.C
===================================================================
--- gcc/testsuite/g++.dg/lto/20081204-1_0.C (revision 259789)
+++ gcc/testsuite/g++.dg/lto/20081204-1_0.C (working copy)
@@ -1,6 +1,7 @@
/* { dg-lto-do link } */
/* { dg-require-effective-target fpic } */
/* { dg-lto-options {{-flto -flto-partition=1to1 -fPIC -r -nostdlib}} } */
+/* { dg-extra-ld-options "-flinker-output=nolto-rel" } */
/* Tests for the absence during linking of:
lto1: error: type of '_ZTVN10__cxxabiv120__si_class_type_infoE' does
Index: gcc/testsuite/g++.dg/lto/20081219_0.C
===================================================================
--- gcc/testsuite/g++.dg/lto/20081219_0.C (revision 259789)
+++ gcc/testsuite/g++.dg/lto/20081219_0.C (working copy)
@@ -1,7 +1,7 @@
// { dg-lto-do link }
// { dg-require-effective-target fpic }
// { dg-lto-options {{-fPIC -flto -flto-partition=1to1 -O2}} }
-// { dg-extra-ld-options "-O2 -fPIC -flto -flto-partition=1to1 -r -nostdlib" }
+// { dg-extra-ld-options "-O2 -fPIC -flto -flto-partition=1to1 -r -nostdlib
-flinker-output=nolto-rel" }
typedef long int ptrdiff_t;
extern "C"
Index: gcc/testsuite/g++.dg/lto/20090302_0.C
===================================================================
--- gcc/testsuite/g++.dg/lto/20090302_0.C (revision 259789)
+++ gcc/testsuite/g++.dg/lto/20090302_0.C (working copy)
@@ -1,6 +1,7 @@
/* { dg-lto-do link } */
/* { dg-require-effective-target fpic } */
/* { dg-lto-options {{-fPIC -flto -flto-partition=1to1 -r -nostdlib}} } */
+/* { dg-extra-ld-options "-flinker-output=nolto-rel" } */
struct Foo {
bool Mumble();
static void Bar() { if (foo_->Mumble()) foo_ = 0; }
Index: gcc/testsuite/g++.dg/lto/20090313_0.C
===================================================================
--- gcc/testsuite/g++.dg/lto/20090313_0.C (revision 259789)
+++ gcc/testsuite/g++.dg/lto/20090313_0.C (working copy)
@@ -1,6 +1,6 @@
// { dg-lto-do link }
// { dg-require-effective-target fpic }
// { dg-lto-options {{-flto -flto-partition=1to1 -fPIC}} }
-// { dg-extra-ld-options "-flto -flto-partition=1to1 -r -nostdlib" }
+// { dg-extra-ld-options "-flto -flto-partition=1to1 -r -nostdlib
-flinker-output=nolto-rel" }
int X;
Index: gcc/testsuite/g++.dg/lto/20091002-2_0.C
===================================================================
--- gcc/testsuite/g++.dg/lto/20091002-2_0.C (revision 259789)
+++ gcc/testsuite/g++.dg/lto/20091002-2_0.C (working copy)
@@ -1,7 +1,7 @@
// { dg-lto-do link }
// { dg-require-effective-target fpic }
// { dg-lto-options {{-fPIC}} }
-// { dg-extra-ld-options "-fPIC -r -nostdlib" }
+// { dg-extra-ld-options "-fPIC -r -nostdlib -flinker-output=nolto-rel" }
class DataArray {
int max() const { return 0; }
Index: gcc/testsuite/g++.dg/lto/20091002-3_0.C
===================================================================
--- gcc/testsuite/g++.dg/lto/20091002-3_0.C (revision 259789)
+++ gcc/testsuite/g++.dg/lto/20091002-3_0.C (working copy)
@@ -1,7 +1,7 @@
// { dg-lto-do link }
// { dg-require-effective-target fpic }
// { dg-lto-options {{-fPIC}} }
-// { dg-extra-ld-options "-fPIC -r -nostdlib" }
+// { dg-extra-ld-options "-fPIC -r -nostdlib -flinker-output=nolto-rel" }
template < class T >
class DataArray {
Index: gcc/testsuite/g++.dg/lto/20091026-1_0.C
===================================================================
--- gcc/testsuite/g++.dg/lto/20091026-1_0.C (revision 259789)
+++ gcc/testsuite/g++.dg/lto/20091026-1_0.C (working copy)
@@ -1,5 +1,5 @@
// { dg-lto-do link }
-// { dg-extra-ld-options "-r -nostdlib" }
+// { dg-extra-ld-options "-r -nostdlib -flinker-output=nolto-rel" }
#include "20091026-1_a.h"
cObject *cHead::find(const char *objname) const
Index: gcc/testsuite/g++.dg/lto/20100724-1_0.C
===================================================================
--- gcc/testsuite/g++.dg/lto/20100724-1_0.C (revision 259789)
+++ gcc/testsuite/g++.dg/lto/20100724-1_0.C (working copy)
@@ -1,6 +1,6 @@
/* { dg-lto-do link } */
/* { dg-lto-options {{-ftoplevel-reorder -flto -flto-partition=none}
{-ftoplevel-reorder -flto -flto-partition=1to1}} } */
-/* { dg-extra-ld-options {-r -nostdlib} } */
+/* { dg-extra-ld-options {-r -nostdlib -flinker-output=nolto-rel} } */
struct Foo { virtual ~Foo(); };
struct Bar:public Foo { Bar() { } };
Index: gcc/testsuite/g++.dg/lto/20101010-4_0.C
===================================================================
--- gcc/testsuite/g++.dg/lto/20101010-4_0.C (revision 259789)
+++ gcc/testsuite/g++.dg/lto/20101010-4_0.C (working copy)
@@ -1,5 +1,6 @@
// { dg-lto-do link }
// { dg-lto-options { { -std=c++0x -flto -r -nostdlib } { -std=c++0x -flto -g
-r -nostdlib } } }
+/* { dg-extra-ld-options "-flinker-output=nolto-rel" } */
typedef decltype(nullptr) nullptr_t;
class shared_ptr {
Index: gcc/testsuite/g++.dg/lto/20101015-2_0.C
===================================================================
--- gcc/testsuite/g++.dg/lto/20101015-2_0.C (revision 259789)
+++ gcc/testsuite/g++.dg/lto/20101015-2_0.C (working copy)
@@ -1,6 +1,6 @@
// { dg-lto-do link }
// { dg-lto-options { { -flto } { -g -flto } } }
-// { dg-extra-ld-options "-r -nostdlib" }
+// { dg-extra-ld-options "-r -nostdlib -flinker-output=nolto-rel" }
struct Base { ~Base (); };
void fun(void) { struct Deriv : Base { } x; }
Index: gcc/testsuite/g++.dg/lto/20110311-1_0.C
===================================================================
--- gcc/testsuite/g++.dg/lto/20110311-1_0.C (revision 259789)
+++ gcc/testsuite/g++.dg/lto/20110311-1_0.C (working copy)
@@ -1,5 +1,5 @@
/* { dg-lto-do link } */
-/* { dg-extra-ld-options "-r -nostdlib" } */
+/* { dg-extra-ld-options "-r -nostdlib -flinker-output=nolto-rel" } */
struct NullType {};
Index: gcc/testsuite/g++.dg/lto/pr45621_0.C
===================================================================
--- gcc/testsuite/g++.dg/lto/pr45621_0.C (revision 259789)
+++ gcc/testsuite/g++.dg/lto/pr45621_0.C (working copy)
@@ -1,5 +1,5 @@
// { dg-lto-do assemble }
-// { dg-extra-ld-options "-O2 -fipa-cp-clone -flto -nostdlib -r" }
+// { dg-extra-ld-options "-O2 -fipa-cp-clone -flto -nostdlib -r
-flinker-output=nolto-rel" }
#include "pr45621.h"
void
Index: gcc/testsuite/g++.dg/lto/pr48042_0.C
===================================================================
--- gcc/testsuite/g++.dg/lto/pr48042_0.C (revision 259789)
+++ gcc/testsuite/g++.dg/lto/pr48042_0.C (working copy)
@@ -1,5 +1,5 @@
// { dg-lto-do link }
-// { dg-extra-ld-options "-r -nostdlib -g" }
+// { dg-extra-ld-options "-r -nostdlib -g -flinker-output=nolto-rel" }
class A {
virtual int x() = 0;
Index: gcc/testsuite/g++.dg/lto/pr48354-1_0.C
===================================================================
--- gcc/testsuite/g++.dg/lto/pr48354-1_0.C (revision 259789)
+++ gcc/testsuite/g++.dg/lto/pr48354-1_0.C (working copy)
@@ -1,6 +1,6 @@
// { dg-lto-do link }
// { dg-lto-options { { -g -flto } } }
-// { dg-extra-ld-options "-r -nostdlib" }
+// { dg-extra-ld-options "-r -nostdlib -flinker-output=nolto-rel" }
template<typename T> struct Identity { typedef T type; };
struct S {
Index: gcc/testsuite/g++.dg/lto/pr54625-1_0.c
===================================================================
--- gcc/testsuite/g++.dg/lto/pr54625-1_0.c (revision 259789)
+++ gcc/testsuite/g++.dg/lto/pr54625-1_0.c (working copy)
@@ -1,5 +1,5 @@
/* { dg-lto-do link } */
-/* { dg-extra-ld-options { -r -nostdlib } } */
+/* { dg-extra-ld-options { -r -nostdlib -flinker-output=nolto-rel } } */
float a;
double sin ();
Index: gcc/testsuite/gcc.dg/lto/20081120-1_0.c
===================================================================
--- gcc/testsuite/gcc.dg/lto/20081120-1_0.c (revision 259789)
+++ gcc/testsuite/gcc.dg/lto/20081120-1_0.c (working copy)
@@ -1,5 +1,6 @@
/* { dg-lto-do link } */
/* { dg-lto-options {{-flto -r -nostdlib}} } */
+/* { dg-extra-ld-options "-flinker-output=nolto-rel" } */
extern int stat(void) __asm__("" "stat64");
extern inline int stat(void) { }
static void foo(void) { stat(); }
Index: gcc/testsuite/gcc.dg/lto/20081120-2_0.c
===================================================================
--- gcc/testsuite/gcc.dg/lto/20081120-2_0.c (revision 259789)
+++ gcc/testsuite/gcc.dg/lto/20081120-2_0.c (working copy)
@@ -1,3 +1,4 @@
/* { dg-lto-do link } */
/* { dg-lto-options {{-flto -flto-partition=1to1 -r -nostdlib}} } */
+/* { dg-extra-ld-options "-flinker-output=nolto-rel" } */
void bar(void) {}
Index: gcc/testsuite/gcc.dg/lto/20081126_0.c
===================================================================
--- gcc/testsuite/gcc.dg/lto/20081126_0.c (revision 259789)
+++ gcc/testsuite/gcc.dg/lto/20081126_0.c (working copy)
@@ -1,6 +1,7 @@
/* { dg-lto-do link } */
/* { dg-skip-if "" { ! { i?86-*-* x86_64-*-* } } } */
/* { dg-lto-options {{-flto -r -nostdlib}} } */
+/* { dg-extra-ld-options "-flinker-output=nolto-rel" } */
int f(void) {
register int ri asm("edi");
Index: gcc/testsuite/gcc.dg/lto/20081204-1_0.c
===================================================================
--- gcc/testsuite/gcc.dg/lto/20081204-1_0.c (revision 259789)
+++ gcc/testsuite/gcc.dg/lto/20081204-1_0.c (working copy)
@@ -1,6 +1,7 @@
/* { dg-lto-do link } */
/* { dg-require-effective-target fpic } */
/* { dg-lto-options {{-flto -flto-partition=1to1 -fPIC -r -nostdlib}} } */
+/* { dg-extra-ld-options "-flinker-output=nolto-rel" } */
/* Tests for the absence during linking of:
lto1: error: type of 'i' does not match original declaration */
Index: gcc/testsuite/gcc.dg/lto/20081204-2_0.c
===================================================================
--- gcc/testsuite/gcc.dg/lto/20081204-2_0.c (revision 259789)
+++ gcc/testsuite/gcc.dg/lto/20081204-2_0.c (working copy)
@@ -1,5 +1,6 @@
/* { dg-lto-do link } */
/* { dg-skip-if "" { ! { i?86-*-* x86_64-*-* } } } */
/* { dg-lto-options {{-w -flto -fPIC -r -nostdlib}} } */
+/* { dg-extra-ld-options "-flinker-output=nolto-rel" } */
register int ri asm("edi");
Index: gcc/testsuite/gcc.dg/lto/20081212-1_0.c
===================================================================
--- gcc/testsuite/gcc.dg/lto/20081212-1_0.c (revision 259789)
+++ gcc/testsuite/gcc.dg/lto/20081212-1_0.c (working copy)
@@ -1,4 +1,5 @@
/* { dg-lto-do link } */
/* { dg-lto-options {{-r -nostdlib}} } */
+/* { dg-extra-ld-options "-flinker-output=nolto-rel" } */
int exported_var = 42;
/* { dg-final { scan-symbol "exported_var" } } */
Index: gcc/testsuite/gcc.dg/lto/20081224_0.c
===================================================================
--- gcc/testsuite/gcc.dg/lto/20081224_0.c (revision 259789)
+++ gcc/testsuite/gcc.dg/lto/20081224_0.c (working copy)
@@ -1,6 +1,7 @@
/* { dg-lto-do link } */
/* { dg-require-effective-target fpic } */
/* { dg-lto-options {{-flto -flto-partition=1to1 -r -nostdlib -fPIC}} } */
+/* { dg-extra-ld-options "-flinker-output=nolto-rel" } */
#include "20081224_0.h"
extern struct foo x;
Index: gcc/testsuite/gcc.dg/lto/20090116_0.c
===================================================================
--- gcc/testsuite/gcc.dg/lto/20090116_0.c (revision 259789)
+++ gcc/testsuite/gcc.dg/lto/20090116_0.c (working copy)
@@ -1,7 +1,7 @@
/* { dg-lto-do link } */
/* { dg-require-effective-target fpic } */
/* { dg-lto-options {{-O1 -flto -flto-partition=1to1 -fPIC}} } */
-/* { dg-extra-ld-options {-r -nostdlib -O0} } */
+/* { dg-extra-ld-options {-r -nostdlib -O0 -flinker-output=nolto-rel} } */
int foo(void) {
int ret, i;
Index: gcc/testsuite/gcc.dg/lto/20090126-1_0.c
===================================================================
--- gcc/testsuite/gcc.dg/lto/20090126-1_0.c (revision 259789)
+++ gcc/testsuite/gcc.dg/lto/20090126-1_0.c (working copy)
@@ -1,6 +1,6 @@
/* { dg-lto-do link } */
/* { dg-lto-options {{-O0 -flto -flto-partition=1to1}} } */
-/* { dg-extra-ld-options {-r -nostdlib -O2 -flto -flto-partition=1to1} } */
+/* { dg-extra-ld-options {-r -nostdlib -O2 -flto -flto-partition=1to1
-flinker-output=nolto-rel} } */
int main(int argc, char **argv) {
return 0;
Index: gcc/testsuite/gcc.dg/lto/20090126-2_0.c
===================================================================
--- gcc/testsuite/gcc.dg/lto/20090126-2_0.c (revision 259789)
+++ gcc/testsuite/gcc.dg/lto/20090126-2_0.c (working copy)
@@ -1,7 +1,7 @@
/* { dg-lto-do link } */
/* { dg-require-effective-target fpic } */
/* { dg-lto-options {{-fPIC -O2 -flto -flto-partition=1to1}} } */
-/* { dg-extra-ld-options {-fno-PIC -r -nostdlib -O2 -flto
-flto-partition=1to1} } */
+/* { dg-extra-ld-options {-fno-PIC -r -nostdlib -O2 -flto -flto-partition=1to1
-flinker-output=nolto-rel} } */
int main(int argc, char **argv) {
return 0;
Index: gcc/testsuite/gcc.dg/lto/20090206-1_0.c
===================================================================
--- gcc/testsuite/gcc.dg/lto/20090206-1_0.c (revision 259789)
+++ gcc/testsuite/gcc.dg/lto/20090206-1_0.c (working copy)
@@ -3,6 +3,7 @@
/* { dg-lto-options {{-fPIC -r -nostdlib -flto -flto-partition=1to1 -msse2}} }
*/
/* { dg-require-effective-target sse2 } */
/* { dg-suppress-ld-options {-fPIC -msse2} } */
+/* { dg-extra-ld-options "-flinker-output=nolto-rel" } */
typedef short v8hi __attribute__((__vector_size__(16)));
void func (void) {
Index: gcc/testsuite/gcc.dg/lto/20090219_0.c
===================================================================
--- gcc/testsuite/gcc.dg/lto/20090219_0.c (revision 259789)
+++ gcc/testsuite/gcc.dg/lto/20090219_0.c (working copy)
@@ -1,6 +1,7 @@
/* { dg-lto-do link } */
/* { dg-require-effective-target fpic } */
/* { dg-lto-options {{-O3 -flto -flto-partition=1to1 -fPIC -r -nostdlib}} } */
+/* { dg-extra-ld-options "-flinker-output=nolto-rel" } */
struct Foo { int f1, f2, f3, f4, f5; };
Index: gcc/testsuite/gcc.dg/lto/20091013-1_0.c
===================================================================
--- gcc/testsuite/gcc.dg/lto/20091013-1_0.c (revision 259789)
+++ gcc/testsuite/gcc.dg/lto/20091013-1_0.c (working copy)
@@ -1,6 +1,7 @@
/* { dg-lto-do link } */
/* { dg-require-effective-target fpic } */
/* { dg-lto-options {{-fPIC -r -nostdlib -flto} {-fPIC -r -nostdlib -O2
-flto}} } */
+/* { dg-extra-ld-options "-flinker-output=nolto-rel" } */
void * HeapAlloc(void*,unsigned int,unsigned long);
Index: gcc/testsuite/gcc.dg/lto/20091014-1_0.c
===================================================================
--- gcc/testsuite/gcc.dg/lto/20091014-1_0.c (revision 259789)
+++ gcc/testsuite/gcc.dg/lto/20091014-1_0.c (working copy)
@@ -1,5 +1,6 @@
/* { dg-lto-do link } */
/* { dg-require-effective-target fpic } */
/* { dg-lto-options {{-fPIC -r -nostdlib -flto}} } */
+/* { dg-extra-ld-options "-flinker-output=nolto-rel" } */
/* Empty file. See PR41173. */
Index: gcc/testsuite/gcc.dg/lto/20091015-1_0.c
===================================================================
--- gcc/testsuite/gcc.dg/lto/20091015-1_0.c (revision 259789)
+++ gcc/testsuite/gcc.dg/lto/20091015-1_0.c (working copy)
@@ -1,6 +1,7 @@
/* { dg-lto-do link } */
/* { dg-require-effective-target fpic } */
/* { dg-lto-options {{-fPIC -r -nostdlib -O2 -flto} {-fPIC -r -nostdlib -O2
-flto -flto-partition=1to1}} } */
+/* { dg-extra-ld-options "-flinker-output=nolto-rel" } */
#include "20091015-1_b.h"
void diagnostic_initialize (FILE **stream) { *stream = stderr; }
Index: gcc/testsuite/gcc.dg/lto/20091016-1_0.c
===================================================================
--- gcc/testsuite/gcc.dg/lto/20091016-1_0.c (revision 259789)
+++ gcc/testsuite/gcc.dg/lto/20091016-1_0.c (working copy)
@@ -1,6 +1,7 @@
/* { dg-lto-do link } */
/* { dg-require-effective-target fpic } */
/* { dg-lto-options {{-fPIC -r -nostdlib -O2 -flto}} } */
+/* { dg-extra-ld-options "-flinker-output=nolto-rel" } */
typedef struct VEC_constructor_elt_gc { } VEC_constructor_elt_gc;
#include "20091016-1_a.h"
Index: gcc/testsuite/gcc.dg/lto/20091020-1_0.c
===================================================================
--- gcc/testsuite/gcc.dg/lto/20091020-1_0.c (revision 259789)
+++ gcc/testsuite/gcc.dg/lto/20091020-1_0.c (working copy)
@@ -1,6 +1,7 @@
/* { dg-lto-do link } */
/* { dg-require-effective-target fpic } */
/* { dg-lto-options {{-fPIC -r -nostdlib -flto}} } */
+/* { dg-extra-ld-options "-flinker-output=nolto-rel" } */
typedef struct {
int NumPackStreams;
Index: gcc/testsuite/gcc.dg/lto/20091020-2_0.c
===================================================================
--- gcc/testsuite/gcc.dg/lto/20091020-2_0.c (revision 259789)
+++ gcc/testsuite/gcc.dg/lto/20091020-2_0.c (working copy)
@@ -1,6 +1,7 @@
/* { dg-lto-do link } */
/* { dg-require-effective-target fpic } */
/* { dg-lto-options {{-fPIC -r -nostdlib -flto}} } */
+/* { dg-extra-ld-options "-flinker-output=nolto-rel" } */
typedef struct {
int NumPackStreams;
Index: gcc/testsuite/gcc.dg/lto/20091027-1_0.c
===================================================================
--- gcc/testsuite/gcc.dg/lto/20091027-1_0.c (revision 259789)
+++ gcc/testsuite/gcc.dg/lto/20091027-1_0.c (working copy)
@@ -1,5 +1,5 @@
/* { dg-lto-do link } */
-/* { dg-extra-ld-options "-r -nostdlib" } */
+/* { dg-extra-ld-options "-r -nostdlib -flinker-output=nolto-rel" } */
typedef struct _xmlDict xmlDict;
struct _xmlDict {
Index: gcc/testsuite/gcc.dg/lto/20100426_0.c
===================================================================
--- gcc/testsuite/gcc.dg/lto/20100426_0.c (revision 259789)
+++ gcc/testsuite/gcc.dg/lto/20100426_0.c (working copy)
@@ -1,5 +1,6 @@
/* { dg-lto-do link } */
/* { dg-lto-options {{-r -nostdlib -flto -g}} } */
+/* { dg-extra-ld-options "-flinker-output=nolto-rel" } */
long Perl_my_htonl (long l)
{
Index: gcc/testsuite/gfortran.dg/lto/20091016-1_0.f90
===================================================================
--- gcc/testsuite/gfortran.dg/lto/20091016-1_0.f90 (revision 259789)
+++ gcc/testsuite/gfortran.dg/lto/20091016-1_0.f90 (working copy)
@@ -1,5 +1,6 @@
! { dg-lto-do link }
! { dg-lto-options {{-flto -g -fPIC -r -nostdlib} {-O -flto -g -fPIC -r
-nostdlib}} }
+! { dg-extra-ld-options "-flinker-output=nolto-rel" }
FUNCTION makenumberstring(x)
IMPLICIT NONE
Index: gcc/testsuite/gfortran.dg/lto/20091028-1_0.f90
===================================================================
--- gcc/testsuite/gfortran.dg/lto/20091028-1_0.f90 (revision 259789)
+++ gcc/testsuite/gfortran.dg/lto/20091028-1_0.f90 (working copy)
@@ -1,5 +1,5 @@
! { dg-lto-do link }
-! { dg-extra-ld-options "-r -nostdlib -finline-functions" }
+! { dg-extra-ld-options "-r -nostdlib -finline-functions
-flinker-output=nolto-rel" }
SUBROUTINE int_gen_ti_header_char( hdrbuf, hdrbufsize, itypesize, &
DataHandle, Element, VarName, Data, code )
Index: gcc/testsuite/gfortran.dg/lto/20091028-2_0.f90
===================================================================
--- gcc/testsuite/gfortran.dg/lto/20091028-2_0.f90 (revision 259789)
+++ gcc/testsuite/gfortran.dg/lto/20091028-2_0.f90 (working copy)
@@ -1,5 +1,5 @@
! { dg-lto-do link }
-! { dg-extra-ld-options "-r -nostdlib -finline-functions" }
+! { dg-extra-ld-options "-r -nostdlib -finline-functions
-flinker-output=nolto-rel" }
SUBROUTINE int_gen_ti_header_char( hdrbuf, hdrbufsize, itypesize, &
DataHandle, Element, VarName, Data, code )
Index: gcc/testsuite/gfortran.dg/lto/pr46911_0.f
===================================================================
--- gcc/testsuite/gfortran.dg/lto/pr46911_0.f (revision 259789)
+++ gcc/testsuite/gfortran.dg/lto/pr46911_0.f (working copy)
@@ -1,6 +1,6 @@
! { dg-lto-do link }
! { dg-lto-options {{ -O2 -flto -g }} }
-! { dg-extra-ld-options "-r -nostdlib" }
+! { dg-extra-ld-options "-r -nostdlib -flinker-output=nolto-rel" }
common/main1/ eps(2)
call dalie6s(iqmod6,1,wx,cor6d)
end
Index: gcc/testsuite/gfortran.dg/lto/pr47839_0.f90
===================================================================
--- gcc/testsuite/gfortran.dg/lto/pr47839_0.f90 (revision 259789)
+++ gcc/testsuite/gfortran.dg/lto/pr47839_0.f90 (working copy)
@@ -1,6 +1,6 @@
! { dg-lto-do link }
! { dg-lto-options {{ -g -flto }} }
-! { dg-extra-ld-options "-r -nostdlib" }
+! { dg-extra-ld-options "-r -nostdlib -flinker-output=nolto-rel" }
MODULE globalvar_mod
integer :: xstop
Index: gcc/toplev.c
===================================================================
--- gcc/toplev.c (revision 259789)
+++ gcc/toplev.c (working copy)
@@ -495,7 +495,8 @@
/* Compilation unit is finalized. When producing non-fat LTO object, we are
basically finished. */
- if (in_lto_p || !flag_lto || flag_fat_lto_objects)
+ if ((in_lto_p && flag_incremental_link != 2)
+ || !flag_lto || flag_fat_lto_objects)
{
/* File-scope initialization for AddressSanitizer. */
if (flag_sanitize & SANITIZE_ADDRESS)
Index: lto-plugin/lto-plugin.c
===================================================================
--- lto-plugin/lto-plugin.c (revision 259789)
+++ lto-plugin/lto-plugin.c (working copy)
@@ -27,10 +27,13 @@
More information at http://gcc.gnu.org/wiki/whopr/driver.
This plugin should be passed the lto-wrapper options and will forward them.
- It also has 2 options of its own:
+ It also has options at his own:
-debug: Print the command line used to run lto-wrapper.
-nop: Instead of running lto-wrapper, pass the original to the plugin. This
- only works if the input files are hybrid. */
+ only works if the input files are hybrid.
+ -linker-output-known: Do not determine linker output
+ -sym-style={none,win32,underscore|uscore}
+ -pass-through */
#ifdef HAVE_CONFIG_H
#include "config.h"
@@ -159,6 +162,7 @@
static struct plugin_file_info *claimed_files = NULL;
static unsigned int num_claimed_files = 0;
+static unsigned int non_claimed_files = 0;
/* List of files with offloading. */
static struct plugin_offload_file *offload_files;
@@ -185,6 +189,7 @@
static char *resolution_file = NULL;
static enum ld_plugin_output_file_type linker_output;
static int linker_output_set;
+static int linker_output_known;
/* The version of gold being used, or -1 if not gold. The number is
MAJOR * 100 + MINOR. */
@@ -637,7 +642,8 @@
all_symbols_read_handler (void)
{
unsigned i;
- unsigned num_lto_args = num_claimed_files + lto_wrapper_num_args + 3;
+ unsigned num_lto_args = num_claimed_files + lto_wrapper_num_args + 2
+ + !linker_output_known;
char **lto_argv;
const char *linker_output_str = NULL;
const char **lto_arg_ptr;
@@ -661,26 +667,37 @@
for (i = 0; i < lto_wrapper_num_args; i++)
*lto_arg_ptr++ = lto_wrapper_argv[i];
- assert (linker_output_set);
- switch (linker_output)
+ if (!linker_output_known)
{
- case LDPO_REL:
- linker_output_str = "-flinker-output=rel";
- break;
- case LDPO_DYN:
- linker_output_str = "-flinker-output=dyn";
- break;
- case LDPO_PIE:
- linker_output_str = "-flinker-output=pie";
- break;
- case LDPO_EXEC:
- linker_output_str = "-flinker-output=exec";
- break;
- default:
- message (LDPL_FATAL, "unsupported linker output %i", linker_output);
- break;
+ assert (linker_output_set);
+ switch (linker_output)
+ {
+ case LDPO_REL:
+ if (non_claimed_files)
+ {
+ message (LDPL_WARNING, "incremental linking of LTO and non-LTO "
+ "objects; using -flinker-output=nolto-rel which will "
+ "bypass whole program optimization");
+ linker_output_str = "-flinker-output=nolto-rel";
+ }
+ else
+ linker_output_str = "-flinker-output=rel";
+ break;
+ case LDPO_DYN:
+ linker_output_str = "-flinker-output=dyn";
+ break;
+ case LDPO_PIE:
+ linker_output_str = "-flinker-output=pie";
+ break;
+ case LDPO_EXEC:
+ linker_output_str = "-flinker-output=exec";
+ break;
+ default:
+ message (LDPL_FATAL, "unsupported linker output %i", linker_output);
+ break;
+ }
+ *lto_arg_ptr++ = xstrdup (linker_output_str);
}
- *lto_arg_ptr++ = xstrdup (linker_output_str);
if (num_offload_files > 0)
{
@@ -1108,6 +1125,7 @@
goto cleanup;
err:
+ non_claimed_files++;
free (lto_file.name);
cleanup:
@@ -1122,6 +1140,8 @@
static void
process_option (const char *option)
{
+ if (strcmp (option, "-linker-output-known") == 0)
+ linker_output_known = 1;
if (strcmp (option, "-debug") == 0)
debug = 1;
else if (strcmp (option, "-nop") == 0)
