Message ID | 3f5ec8b3-3704-32a9-4db9-6aff7e246c8c@suse.cz |
---|---|
State | New |
Headers | show |
On 01/13/2017 08:08 AM, Martin Liška wrote: > Hello. > > Nice example provided in the PR causes ICE as we have an artificial symbol > created in tree-profile.c once being removed by remove unreachable nodes (-O0) > and once not (-O1). Well, difference is in process_references where following hunk > prevent removal: > > || (((before_inlining_p > && ((TREE_CODE (node->decl) != FUNCTION_DECL > && optimize) > > Anyway, these artificial symbols really should be just declarations as they are defined > in libgcov library. > > Patch can bootstrap on ppc64le-redhat-linux and survives regression tests. > > Ready to be installed? > Martin > > > 0001-Do-not-declare-artificial-variables-in-tree-profile..patch > > > From 87262b1b60009381fd943fb433bc38f5d5685ac9 Mon Sep 17 00:00:00 2001 > From: marxin <mliska@suse.cz> > Date: Fri, 13 Jan 2017 13:12:57 +0100 > Subject: [PATCH] Do not declare artificial variables in tree-profile.c to have > a definition (PR lto/69188). > > gcc/testsuite/ChangeLog: > > 2017-01-13 Martin Liska <mliska@suse.cz> > > PR lto/69188 > * gcc.dg/lto/pr69188_0.c: New test. > * gcc.dg/lto/pr69188_1.c: New test. > > gcc/ChangeLog: > > 2017-01-13 Martin Liska <mliska@suse.cz> > > PR lto/69188 > * tree-profile.c (init_ic_make_global_vars): Do not call > finalize_decl. > (gimple_init_gcov_profiler): Likewise. OK. jeff
On 01/13/2017 06:21 PM, Jeff Law wrote: > On 01/13/2017 08:08 AM, Martin Liška wrote: >> Hello. >> >> Nice example provided in the PR causes ICE as we have an artificial symbol >> created in tree-profile.c once being removed by remove unreachable nodes (-O0) >> and once not (-O1). Well, difference is in process_references where following hunk >> prevent removal: >> >> || (((before_inlining_p >> && ((TREE_CODE (node->decl) != FUNCTION_DECL >> && optimize) >> >> Anyway, these artificial symbols really should be just declarations as they are defined >> in libgcov library. >> >> Patch can bootstrap on ppc64le-redhat-linux and survives regression tests. >> >> Ready to be installed? >> Martin >> >> >> 0001-Do-not-declare-artificial-variables-in-tree-profile..patch >> >> >> From 87262b1b60009381fd943fb433bc38f5d5685ac9 Mon Sep 17 00:00:00 2001 >> From: marxin <mliska@suse.cz> >> Date: Fri, 13 Jan 2017 13:12:57 +0100 >> Subject: [PATCH] Do not declare artificial variables in tree-profile.c to have >> a definition (PR lto/69188). >> >> gcc/testsuite/ChangeLog: >> >> 2017-01-13 Martin Liska <mliska@suse.cz> >> >> PR lto/69188 >> * gcc.dg/lto/pr69188_0.c: New test. >> * gcc.dg/lto/pr69188_1.c: New test. >> >> gcc/ChangeLog: >> >> 2017-01-13 Martin Liska <mliska@suse.cz> >> >> PR lto/69188 >> * tree-profile.c (init_ic_make_global_vars): Do not call >> finalize_decl. >> (gimple_init_gcov_profiler): Likewise. > OK. > jeff > May I install the same patch to both active branches after it survives regression tests? Thanks, Martin
On 01/20/2017 02:46 AM, Martin Liška wrote: > On 01/13/2017 06:21 PM, Jeff Law wrote: >> On 01/13/2017 08:08 AM, Martin Liška wrote: >>> Hello. >>> >>> Nice example provided in the PR causes ICE as we have an artificial symbol >>> created in tree-profile.c once being removed by remove unreachable nodes (-O0) >>> and once not (-O1). Well, difference is in process_references where following hunk >>> prevent removal: >>> >>> || (((before_inlining_p >>> && ((TREE_CODE (node->decl) != FUNCTION_DECL >>> && optimize) >>> >>> Anyway, these artificial symbols really should be just declarations as they are defined >>> in libgcov library. >>> >>> Patch can bootstrap on ppc64le-redhat-linux and survives regression tests. >>> >>> Ready to be installed? >>> Martin >>> >>> >>> 0001-Do-not-declare-artificial-variables-in-tree-profile..patch >>> >>> >>> From 87262b1b60009381fd943fb433bc38f5d5685ac9 Mon Sep 17 00:00:00 2001 >>> From: marxin <mliska@suse.cz> >>> Date: Fri, 13 Jan 2017 13:12:57 +0100 >>> Subject: [PATCH] Do not declare artificial variables in tree-profile.c to have >>> a definition (PR lto/69188). >>> >>> gcc/testsuite/ChangeLog: >>> >>> 2017-01-13 Martin Liska <mliska@suse.cz> >>> >>> PR lto/69188 >>> * gcc.dg/lto/pr69188_0.c: New test. >>> * gcc.dg/lto/pr69188_1.c: New test. >>> >>> gcc/ChangeLog: >>> >>> 2017-01-13 Martin Liska <mliska@suse.cz> >>> >>> PR lto/69188 >>> * tree-profile.c (init_ic_make_global_vars): Do not call >>> finalize_decl. >>> (gimple_init_gcov_profiler): Likewise. >> OK. >> jeff >> > > May I install the same patch to both active branches after it survives regression tests? Yes. jeff
On 13 January 2017 at 18:21, Jeff Law <law@redhat.com> wrote: > On 01/13/2017 08:08 AM, Martin Liška wrote: >> >> Hello. >> >> Nice example provided in the PR causes ICE as we have an artificial symbol >> created in tree-profile.c once being removed by remove unreachable nodes >> (-O0) >> and once not (-O1). Well, difference is in process_references where >> following hunk >> prevent removal: >> >> || (((before_inlining_p >> && ((TREE_CODE (node->decl) != FUNCTION_DECL >> && optimize) >> >> Anyway, these artificial symbols really should be just declarations as >> they are defined >> in libgcov library. >> >> Patch can bootstrap on ppc64le-redhat-linux and survives regression tests. >> >> Ready to be installed? >> Martin >> >> >> 0001-Do-not-declare-artificial-variables-in-tree-profile..patch >> >> >> From 87262b1b60009381fd943fb433bc38f5d5685ac9 Mon Sep 17 00:00:00 2001 >> From: marxin <mliska@suse.cz> >> Date: Fri, 13 Jan 2017 13:12:57 +0100 >> Subject: [PATCH] Do not declare artificial variables in tree-profile.c to >> have >> a definition (PR lto/69188). >> >> gcc/testsuite/ChangeLog: >> >> 2017-01-13 Martin Liska <mliska@suse.cz> >> >> PR lto/69188 >> * gcc.dg/lto/pr69188_0.c: New test. >> * gcc.dg/lto/pr69188_1.c: New test. >> >> gcc/ChangeLog: >> >> 2017-01-13 Martin Liska <mliska@suse.cz> >> >> PR lto/69188 >> * tree-profile.c (init_ic_make_global_vars): Do not call >> finalize_decl. >> (gimple_init_gcov_profiler): Likewise. > > OK. > jeff > Hi, The new test fails on arm-none-eabi: /cc6RcpEu.ltrans0.ltrans.o: In function `fn1': <artificial>:(.text+0x18): undefined reference to `__gcov_indirect_call_profiler_v2' <artificial>:(.text+0x1c): undefined reference to `__gcov_indirect_call_callee' <artificial>:(.text+0x20): undefined reference to `__gcov_indirect_call_callee' <artificial>:(.text+0x60): undefined reference to `__gcov_time_profiler_counter' <artificial>:(.text+0x64): undefined reference to `__gcov_time_profiler_counter' <artificial>:(.text+0x80): undefined reference to `__gcov_time_profiler_counter' <artificial>:(.text+0x84): undefined reference to `__gcov_time_profiler_counter' /cc6RcpEu.ltrans0.ltrans.o: In function `_GLOBAL__sub_D_00100_1_fn1': <artificial>:(.text+0xb8): undefined reference to `__gcov_exit' /cc6RcpEu.ltrans0.ltrans.o: In function `main': <artificial>:(.text+0xd4): undefined reference to `__gcov_indirect_call_profiler_v2' <artificial>:(.text+0xd8): undefined reference to `__gcov_indirect_call_callee' <artificial>:(.text+0xdc): undefined reference to `__gcov_indirect_call_callee' <artificial>:(.text+0x10c): undefined reference to `__gcov_time_profiler_counter' <artificial>:(.text+0x110): undefined reference to `__gcov_time_profiler_counter' /cc6RcpEu.ltrans0.ltrans.o: In function `_GLOBAL__sub_D_00100_1_main': <artificial>:(.text+0x180): undefined reference to `__gcov_exit' /cc6RcpEu.ltrans0.ltrans.o:(.data+0x4c): undefined reference to `__gcov_merge_time_profile' /cc6RcpEu.ltrans0.ltrans.o:(.data+0xac): undefined reference to `__gcov_merge_time_profile' collect2: error: ld returned 1 exit status FAIL: gcc.dg/lto/pr69188 c_lto_pr69188_0.o-c_lto_pr69188_1.o link, -flto -O0 -fprofile-generate It works on arm-linux*. Christophe
From 87262b1b60009381fd943fb433bc38f5d5685ac9 Mon Sep 17 00:00:00 2001 From: marxin <mliska@suse.cz> Date: Fri, 13 Jan 2017 13:12:57 +0100 Subject: [PATCH] Do not declare artificial variables in tree-profile.c to have a definition (PR lto/69188). gcc/testsuite/ChangeLog: 2017-01-13 Martin Liska <mliska@suse.cz> PR lto/69188 * gcc.dg/lto/pr69188_0.c: New test. * gcc.dg/lto/pr69188_1.c: New test. gcc/ChangeLog: 2017-01-13 Martin Liska <mliska@suse.cz> PR lto/69188 * tree-profile.c (init_ic_make_global_vars): Do not call finalize_decl. (gimple_init_gcov_profiler): Likewise. --- gcc/testsuite/gcc.dg/lto/pr69188_0.c | 7 +++++++ gcc/testsuite/gcc.dg/lto/pr69188_1.c | 10 ++++++++++ gcc/tree-profile.c | 6 ------ 3 files changed, 17 insertions(+), 6 deletions(-) create mode 100644 gcc/testsuite/gcc.dg/lto/pr69188_0.c create mode 100644 gcc/testsuite/gcc.dg/lto/pr69188_1.c diff --git a/gcc/testsuite/gcc.dg/lto/pr69188_0.c b/gcc/testsuite/gcc.dg/lto/pr69188_0.c new file mode 100644 index 00000000000..8bee874a65b --- /dev/null +++ b/gcc/testsuite/gcc.dg/lto/pr69188_0.c @@ -0,0 +1,7 @@ +/* PR ipa/69188 */ +/* { dg-lto-do link } */ +/* { dg-lto-options { { -flto -O0 -fprofile-generate } } } */ + +void fn1(void) +{ +} diff --git a/gcc/testsuite/gcc.dg/lto/pr69188_1.c b/gcc/testsuite/gcc.dg/lto/pr69188_1.c new file mode 100644 index 00000000000..3ed9d5560c6 --- /dev/null +++ b/gcc/testsuite/gcc.dg/lto/pr69188_1.c @@ -0,0 +1,10 @@ +/* PR ipa/69188 */ +/* { dg-options "-flto -O1 -fprofile-generate" } */ + +extern void fn1(void); + +int main() { + fn1(); + return 0; +} + diff --git a/gcc/tree-profile.c b/gcc/tree-profile.c index 186cfdf7929..a49ec37f8bb 100644 --- a/gcc/tree-profile.c +++ b/gcc/tree-profile.c @@ -94,8 +94,6 @@ init_ic_make_global_vars (void) if (targetm.have_tls) set_decl_tls_model (ic_void_ptr_var, decl_default_tls_model (ic_void_ptr_var)); - varpool_node::finalize_decl (ic_void_ptr_var); - gcov_type_ptr = build_pointer_type (get_gcov_type ()); ic_gcov_type_ptr_var @@ -112,8 +110,6 @@ init_ic_make_global_vars (void) DECL_INITIAL (ic_gcov_type_ptr_var) = NULL; if (targetm.have_tls) set_decl_tls_model (ic_gcov_type_ptr_var, decl_default_tls_model (ic_gcov_type_ptr_var)); - - varpool_node::finalize_decl (ic_gcov_type_ptr_var); } /* Create the type and function decls for the interface with gcov. */ @@ -210,8 +206,6 @@ gimple_init_gcov_profiler (void) DECL_ARTIFICIAL (tree_time_profiler_counter) = 1; DECL_INITIAL (tree_time_profiler_counter) = NULL; - varpool_node::finalize_decl (tree_time_profiler_counter); - /* void (*) (gcov_type *, gcov_type) */ average_profiler_fn_type = build_function_type_list (void_type_node, -- 2.11.0