[Bug lto/68820] [6 regression] FAIL: gcc.c-torture/execute/builtins/memops-asm.c execution, -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68820 Jan Hubicka changed: What|Removed |Added Assignee|hubicka at gcc dot gnu.org |unassigned at gcc dot gnu.org --- Comment #10 from Jan Hubicka --- OK, this reproduces for me. We get: Merging nodes for my_memcpy. Candidates: my_memcpy/4 (my_memcpy) @0x76cc7450 Type: function definition analyzed Visibility: force_output externally_visible public next sharing asm name: 36 References: Referring: Read from file: memops-asm-lib.o First run: 0 Function flags: Called by: Calls: *my_memcpy/36 (memcpy) @0x76cc9a10 Type: function Visibility: external public next sharing asm name: 35 previous sharing asm name: 4 References: Referring: Read from file: memops-asm.o First run: 0 Function flags: Called by: main_test/31 (1.00 per call) Calls: *my_memcpy/35 (__builtin_memcpy) @0x76cc9b80 Type: function Visibility: external public previous sharing asm name: 36 References: Referring: Read from file: memops-asm.o First run: 0 Function flags: Called by: main_test/31 (1.00 per call) Calls: Not merging decls; DECL_BUILT_IN mismatch Not merging decls; DECL_BUILT_IN mismatch which is expected, one memcpy and __builtin_memcpy are builtins while my_memcpy is not. Now at ltrans time we have: memcpy/8 (memcpy) @0x76ccb450 Type: function definition analyzed Visibility: externally_visible public References: inside_main/0 (read) Referring: Read from file: oo.ltrans0.o First run: 0 Function flags: Called by: Calls: abort/13 i.e. unused memcpy and my_memcpy/4 (my_memcpy) @0x76cc1e60 Type: function definition analyzed Visibility: force_output externally_visible public References: Referring: *my_memcpy/36 (alias) Read from file: oo.ltrans0.o First run: 0 Function flags: nonfreeing_fn Called by: Calls: *my_memcpy/36 (memcpy) @0x76cc1cf0 Type: function definition analyzed alias transparent_alias Visibility: externally_visible external public References: my_memcpy/4 (alias) Referring: Read from file: oo.ltrans0.o First run: 0 Function flags: Called by: main_test/31 (1.00 per call) main_test/31 (1.00 per call) Calls: i.e. used my_memcpy Then we get to: (gdb) bt #0 expand_builtin_memcpy_args (dest=0x76923fe0, src=0x76923ca0, len=0x76918b88, target=target@entry=0x769391e0, exp=exp@entry=0x7692eab0) at ../../gcc/builtins.c:2904 #1 0x005db286 in expand_builtin_memcpy (target=0x769391e0, exp=0x7692eab0) at ../../gcc/builtins.c:2991 #2 expand_builtin (exp=0x7692eab0, target=0x769391e0, subtarget=0x0, mode=DImode, ignore=0) at ../../gcc/builtins.c:5963 #3 0x006c7bf4 in expand_expr_real_1 (exp=0x7692eab0, target=, tmode=DImode, modifier=EXPAND_NORMAL, alt_rtl=, inner_reference_p=inner_reference_p@entry=false) at ../../gcc/expr.c:10563 #4 0x006c94a9 in expand_expr_real (exp=exp@entry=0x7692eab0, target=, tmode=, modifier=modifier@entry=EXPAND_NORMAL, alt_rtl=alt_rtl@entry=0x7fffe2b0, inner_reference_p=inner_reference_p@entry=false) at ../../gcc/expr.c:7947 #5 0x006d070a in store_expr_with_bounds (exp=exp@entry=0x7692eab0, target=target@entry=0x769391e0, call_param_p=call_param_p@entry=0, nontemporal=nontemporal@entry=false, reverse=reverse@entry=false, btarget=btarget@entry=0x76918bd0) at
[Bug lto/68820] [6 regression] FAIL: gcc.c-torture/execute/builtins/memops-asm.c execution, -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68820 --- Comment #11 from Jan Hubicka --- ... and in case anyone is curious, with -fuse-linker-plugin we inline the memcpys as we work out the block size. This is why they pass.
[Bug lto/68820] [6 regression] FAIL: gcc.c-torture/execute/builtins/memops-asm.c execution, -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68820 --- Comment #9 from Uroš Bizjak --- (In reply to Jan Hubicka from comment #8) > this does not reproduce for me at PPC nor x86-64. Are there any compilation > farm machines that reproduce it? -fno-use-linker-plugin is needed. Following will trigger the abort on Fedora 23 (otherwise OK with the plugin): $ /ssd/uros/gcc-build/gcc/xgcc -B /ssd/uros/gcc-build/gcc -O2 -g -flto -fno-use-linker-plugin -c memops-asm.c $ /ssd/uros/gcc-build/gcc/xgcc -B /ssd/uros/gcc-build/gcc -O2 -g -flto -fno-use-linker-plugin -c main.c $ /ssd/uros/gcc-build/gcc/xgcc -B /ssd/uros/gcc-build/gcc -O2 -g -flto -fno-use-linker-plugin -c memops-asm-lib.c $ /ssd/uros/gcc-build/gcc/xgcc -B /ssd/uros/gcc-build/gcc -O2 -g -flto -fno-use-linker-plugin main.o memops-asm-lib.o memops-asm.o [uros@localhost mem]$ ./a.out Aborted (core dumped) (gdb) r Starting program: /home/uros/test/mem/a.out Program received signal SIGABRT, Aborted. 0x77a4fa98 in raise () from /lib64/libc.so.6 (gdb) bt #0 0x77a4fa98 in raise () from /lib64/libc.so.6 #1 0x77a5169a in abort () from /lib64/libc.so.6 #2 0x00400967 in memcpy (d=d@entry=0x601120 , s=s@entry=0x601080 , n=) at memops-asm-lib.c:67 #3 0x00400773 in main_test () at memops-asm.c:37 #4 0x004004d3 in main () at main.c:10 The problem is in the call to memcpy, my_memcpy should be called instead.
[Bug lto/68820] [6 regression] FAIL: gcc.c-torture/execute/builtins/memops-asm.c execution, -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68820 --- Comment #8 from Jan Hubicka --- this does not reproduce for me at PPC nor x86-64. Are there any compilation farm machines that reproduce it?
[Bug lto/68820] [6 regression] FAIL: gcc.c-torture/execute/builtins/memops-asm.c execution, -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68820 Uroš Bizjak changed: What|Removed |Added CC||ubizjak at gmail dot com --- Comment #7 from Uroš Bizjak --- Also CentOS 5.11 with GNU ld version 2.17.50.0.6-26.el5 20061020.
[Bug lto/68820] [6 regression] FAIL: gcc.c-torture/execute/builtins/memops-asm.c execution, -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68820 Richard Biener changed: What|Removed |Added Priority|P3 |P1
[Bug lto/68820] [6 regression] FAIL: gcc.c-torture/execute/builtins/memops-asm.c execution, -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68820 Thomas Preud'homme changed: What|Removed |Added Target|ia64-*-*, |ia64-*-*, |x86_64-apple-darwin14 |x86_64-apple-darwin14, ||arm-none-eabi CC||thopre01 at gcc dot gnu.org --- Comment #6 from Thomas Preud'homme --- arm-none-eabi as well.
[Bug lto/68820] [6 regression] FAIL: gcc.c-torture/execute/builtins/memops-asm.c execution, -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68820 Rainer Orth changed: What|Removed |Added CC||ro at gcc dot gnu.org --- Comment #5 from Rainer Orth --- Solaris/x86 has it too, both with ld and gld.
[Bug lto/68820] [6 regression] FAIL: gcc.c-torture/execute/builtins/memops-asm.c execution, -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68820 Dominique d'Humieres changed: What|Removed |Added CC||vries at gcc dot gnu.org --- Comment #4 from Dominique d'Humieres --- *** Bug 68883 has been marked as a duplicate of this bug. ***
[Bug lto/68820] [6 regression] FAIL: gcc.c-torture/execute/builtins/memops-asm.c execution, -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68820 Eric Botcazou changed: What|Removed |Added CC||ebotcazou at gcc dot gnu.org --- Comment #3 from Eric Botcazou --- SPARC/Solaris with system linker has it as well
[Bug lto/68820] [6 regression] FAIL: gcc.c-torture/execute/builtins/memops-asm.c execution, -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68820 Jan Hubicka changed: What|Removed |Added Status|NEW |ASSIGNED Assignee|unassigned at gcc dot gnu.org |hubicka at gcc dot gnu.org --- Comment #2 from Jan Hubicka --- Mine.. I wonder what makes this target specific...
[Bug lto/68820] [6 regression] FAIL: gcc.c-torture/execute/builtins/memops-asm.c execution, -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68820 Richard Biener changed: What|Removed |Added Target Milestone|--- |6.0
[Bug lto/68820] [6 regression] FAIL: gcc.c-torture/execute/builtins/memops-asm.c execution, -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68820 Dominique d'Humieres changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed||2015-12-09 Ever confirmed|0 |1 --- Comment #1 from Dominique d'Humieres --- Confirmed on x86_64-apple-darwin14.
