https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93398
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|WORKSFORME |---
Status|RESOLVED |REOPENED
--- Comment #10 from Martin Liška <marxin at gcc dot gnu.org> ---
It's so easy to end up with a different binary for GCC:
@@ -174,7 +174,7 @@
.//objdir/gcc/c/c-decl.gcda: 01ab0000: 0:COUNTERS average 0 counts
.//objdir/gcc/c/c-decl.gcda: 01ad0000: 0:COUNTERS ior 0 counts
.//objdir/gcc/c/c-decl.gcda: 01af0000: 2:COUNTERS time_profiler 1 counts
-.//objdir/gcc/c/c-decl.gcda: 0: 2419
+.//objdir/gcc/c/c-decl.gcda: 0: 2420
.//objdir/gcc/c/c-decl.gcda: 01000000: 3:FUNCTION ident=1446792123,
lineno_checksum=0x069e6627, cfg_checksum=0x4c361918
.//objdir/gcc/c/c-decl.gcda: 01a10000: 28:COUNTERS arcs 14 counts
.//objdir/gcc/c/c-decl.gcda: 0: 29954 2 2 28793 0 0 873 0
@@ -184,7 +184,7 @@
.//objdir/gcc/c/c-decl.gcda: 01ab0000: 0:COUNTERS average 0 counts
.//objdir/gcc/c/c-decl.gcda: 01ad0000: 0:COUNTERS ior 0 counts
.//objdir/gcc/c/c-decl.gcda: 01af0000: 2:COUNTERS time_profiler 1 counts
-.//objdir/gcc/c/c-decl.gcda: 0: 2421
+.//objdir/gcc/c/c-decl.gcda: 0: 2422
.//objdir/gcc/c/c-decl.gcda: 01000000: 3:FUNCTION ident=1033776594,
lineno_checksum=0x0314bcea, cfg_checksum=0xa707611a
.//objdir/gcc/c/c-decl.gcda: 01a10000: 16:COUNTERS arcs 8 counts
.//objdir/gcc/c/c-decl.gcda: 0: 50 16 0 50 0 50 0 0
So a slightly different tp_first_run can cause different function order:
$ objfolderdiff.py
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-reproducible/base/objdir/gcc/
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-reproducible/next/objdir/gcc/
-d
103/ 624: c/c-decl.o: different
---
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-reproducible/base/objdir/gcc/c/c-decl.o.s.txt
2020-04-07 17:43:18.280993473 +0200
+++
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-reproducible/next/objdir/gcc/c/c-decl.o.s.txt
2020-04-07 17:43:18.280993473 +0200
@@ -34570,15 +34570,6 @@
36: 89 f8 mov %edi,%eax
38: c3 retq
-Disassembly of section .text._Z17ggc_cleared_allocI9lang_typeEPT_v:
-
-0000000000000000 <_Z17ggc_cleared_allocI9lang_typeEPT_v>:
- 0: b9 01 00 00 00 mov $0x1,%ecx
- 5: 31 d2 xor %edx,%edx
- 7: 31 f6 xor %esi,%esi
- 9: bf 20 00 00 00 mov $0x20,%edi
- e: e9 00 00 00 00 jmpq 13 <current_function_returns_null+0x3>
-
Disassembly of section .text.hot._Z15hash_table_mod2jj:
0000000000000000 <_Z15hash_table_mod2jj>:
@@ -34618,6 +34609,15 @@
}
3c: c3 retq
+Disassembly of section .text._Z17ggc_cleared_allocI9lang_typeEPT_v:
+
+0000000000000000 <_Z17ggc_cleared_allocI9lang_typeEPT_v>:
+ 0: b9 01 00 00 00 mov $0x1,%ecx
+ 5: 31 d2 xor %edx,%edx
+ 7: 31 f6 xor %esi,%esi
+ 9: bf 20 00 00 00 mov $0x20,%edi
+ e: e9 00 00 00 00 jmpq 13 <current_function_returns_null+0x3>
+
Disassembly of section
.text.hot._ZN2wi5neg_pI16generic_wide_intI20wide_int_ref_storageILb1ELb0EEEEEbRKT_6signop:
0000000000000000
<_ZN2wi5neg_pI16generic_wide_intI20wide_int_ref_storageILb1ELb0EEEEEbRKT_6signop>:
