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* [Bug middle-end/67850] New: Wrong call_used_regs used in aggregate_value_p @ 2015-10-05 13:04 hjl.tools at gmail dot com 2015-10-05 13:35 ` [Bug middle-end/67850] " hjl.tools at gmail dot com ` (3 more replies) 0 siblings, 4 replies; 5+ messages in thread From: hjl.tools at gmail dot com @ 2015-10-05 13:04 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67850 Bug ID: 67850 Summary: Wrong call_used_regs used in aggregate_value_p Product: gcc Version: 6.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: middle-end Assignee: unassigned at gcc dot gnu.org Reporter: hjl.tools at gmail dot com CC: julia.koval at intel dot com Target Milestone: --- aggregate_value_p may be called: #0 aggregate_value_p (exp=0x7ffff7ff9258, fntype=0x7ffff150b0a8) at /export/gnu/import/git/sources/gcc/gcc/function.c:2096 #1 0x0000000000e2d3ae in (anonymous namespace)::pass_nrv::execute ( this=0x2313730, fun=0x7ffff16091f8) at /export/gnu/import/git/sources/gcc/gcc/tree-nrv.c:153 #2 0x0000000000c6c6ce in execute_one_pass (pass=0x2313730) at /export/gnu/import/git/sources/gcc/gcc/passes.c:2342 #3 0x0000000000c6c918 in execute_pass_list_1 (pass=0x2313730) at /export/gnu/import/git/sources/gcc/gcc/passes.c:2395 #4 0x0000000000c6c989 in execute_pass_list (fn=0x7ffff16091f8, pass=0x2310730) at /export/gnu/import/git/sources/gcc/gcc/passes.c:2406 #5 0x00000000008f436c in cgraph_node::expand (this=0x7ffff160c170) at /export/gnu/import/git/sources/gcc/gcc/cgraphunit.c:1983 #6 0x00000000008f49a6 in expand_all_functions () at /export/gnu/import/git/sources/gcc/gcc/cgraphunit.c:2119 #7 0x00000000008f54bf in symbol_table::compile (this=0x7ffff14e90a8) at /export/gnu/import/git/sources/gcc/gcc/cgraphunit.c:2472 #8 0x00000000008f56e0 in symbol_table::finalize_compilation_unit ( this=0x7ffff14e90a8) at /export/gnu/import/git/sources/gcc/gcc/cgraphunit.c:2562 #9 0x0000000000d6a287 in compile_file () (gdb) f 1 #1 0x0000000000e2d3ae in (anonymous namespace)::pass_nrv::execute ( this=0x2313730, fun=0x7ffff16091f8) at /export/gnu/import/git/sources/gcc/gcc/tree-nrv.c:153 153 if (!aggregate_value_p (result, current_function_decl)) (gdb) But the wrong call_used_regs may be used here: regno = REGNO (reg); nregs = hard_regno_nregs[regno][TYPE_MODE (type)]; for (i = 0; i < nregs; i++) if (! call_used_regs[regno + i]) return 1; since targetm.expand_to_rtl_hook may be called to switch ABI: (gdb) bt #0 ix86_maybe_switch_abi () at /export/gnu/import/git/sources/gcc/gcc/config/i386/i386.c:7445 #1 0x00000000008b0e6f in (anonymous namespace)::pass_expand::execute ( this=0x2313850, fun=0x7ffff16090a8) at /export/gnu/import/git/sources/gcc/gcc/cfgexpand.c:6153 #2 0x0000000000c6c6ce in execute_one_pass (pass=0x2313850) at /export/gnu/import/git/sources/gcc/gcc/passes.c:2342 #3 0x0000000000c6c918 in execute_pass_list_1 (pass=0x2313850) at /export/gnu/import/git/sources/gcc/gcc/passes.c:2395 #4 0x0000000000c6c989 in execute_pass_list (fn=0x7ffff16090a8, pass=0x2310730) at /export/gnu/import/git/sources/gcc/gcc/passes.c:2406 #5 0x00000000008f436c in cgraph_node::expand (this=0x7ffff160c000) at /export/gnu/import/git/sources/gcc/gcc/cgraphunit.c:1983 #6 0x00000000008f49a6 in expand_all_functions () at /export/gnu/import/git/sources/gcc/gcc/cgraphunit.c:2119 #7 0x00000000008f54bf in symbol_table::compile (this=0x7ffff14e90a8) at /export/gnu/import/git/sources/gcc/gcc/cgraphunit.c:2472 #8 0x00000000008f56e0 in symbol_table::finalize_compilation_unit ( this=0x7ffff14e90a8) at /export/gnu/import/git/sources/gcc/gcc/cgraphunit.c:2562 #9 0x0000000000d6a287 in compile_file () to change call_used_regs. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug middle-end/67850] Wrong call_used_regs used in aggregate_value_p 2015-10-05 13:04 [Bug middle-end/67850] New: Wrong call_used_regs used in aggregate_value_p hjl.tools at gmail dot com @ 2015-10-05 13:35 ` hjl.tools at gmail dot com 2015-10-07 10:30 ` [Bug target/67850] " hjl at gcc dot gnu.org ` (2 subsequent siblings) 3 siblings, 0 replies; 5+ messages in thread From: hjl.tools at gmail dot com @ 2015-10-05 13:35 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67850 H.J. Lu <hjl.tools at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |hubicka at ucw dot cz --- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> --- Should targetm.expand_to_rtl_hook be called from cgraph_node::expand instead? ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/67850] Wrong call_used_regs used in aggregate_value_p 2015-10-05 13:04 [Bug middle-end/67850] New: Wrong call_used_regs used in aggregate_value_p hjl.tools at gmail dot com 2015-10-05 13:35 ` [Bug middle-end/67850] " hjl.tools at gmail dot com @ 2015-10-07 10:30 ` hjl at gcc dot gnu.org 2015-10-12 12:26 ` hjl at gcc dot gnu.org 2015-10-12 12:48 ` hjl.tools at gmail dot com 3 siblings, 0 replies; 5+ messages in thread From: hjl at gcc dot gnu.org @ 2015-10-07 10:30 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67850 --- Comment #2 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> --- Author: hjl Date: Wed Oct 7 10:30:12 2015 New Revision: 228565 URL: https://gcc.gnu.org/viewcvs?rev=228565&root=gcc&view=rev Log: Merge ix86_maybe_switch_abi with ix86_set_current_function ix86_maybe_switch_abi is called to late during RTL expansion and we use the stale information from compilation of the previous function. aggregate_value_p uses call_used_regs. aggregate_value_p is used by IPA and return value optimization, which are called before ix86_maybe_switch_abi is called. This patch merges ix86_maybe_switch_abi with ix86_set_current_function. PR target/67850 * config/i386/i386.c (ix86_maybe_switch_abi): Merged with ... (ix86_set_current_function): This. (TARGET_EXPAND_TO_RTL_HOOK): Removed. Modified: trunk/gcc/ChangeLog trunk/gcc/config/i386/i386.c ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/67850] Wrong call_used_regs used in aggregate_value_p 2015-10-05 13:04 [Bug middle-end/67850] New: Wrong call_used_regs used in aggregate_value_p hjl.tools at gmail dot com 2015-10-05 13:35 ` [Bug middle-end/67850] " hjl.tools at gmail dot com 2015-10-07 10:30 ` [Bug target/67850] " hjl at gcc dot gnu.org @ 2015-10-12 12:26 ` hjl at gcc dot gnu.org 2015-10-12 12:48 ` hjl.tools at gmail dot com 3 siblings, 0 replies; 5+ messages in thread From: hjl at gcc dot gnu.org @ 2015-10-12 12:26 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67850 --- Comment #3 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> --- Author: hjl Date: Mon Oct 12 12:26:09 2015 New Revision: 228711 URL: https://gcc.gnu.org/viewcvs?rev=228711&root=gcc&view=rev Log: Merge ix86_maybe_switch_abi with ix86_set_current_function ix86_maybe_switch_abi is called to late during RTL expansion and we use the stale information from compilation of the previous function. aggregate_value_p uses call_used_regs. aggregate_value_p is used by IPA and return value optimization, which are called before ix86_maybe_switch_abi is called. This patch merges ix86_maybe_switch_abi with ix86_set_current_function. Backport from mainline: PR target/67850 * config/i386/i386.c (ix86_maybe_switch_abi): Merged with ... (ix86_set_current_function): This. (TARGET_EXPAND_TO_RTL_HOOK): Removed. Modified: branches/gcc-5-branch/gcc/ChangeLog branches/gcc-5-branch/gcc/config/i386/i386.c ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/67850] Wrong call_used_regs used in aggregate_value_p 2015-10-05 13:04 [Bug middle-end/67850] New: Wrong call_used_regs used in aggregate_value_p hjl.tools at gmail dot com ` (2 preceding siblings ...) 2015-10-12 12:26 ` hjl at gcc dot gnu.org @ 2015-10-12 12:48 ` hjl.tools at gmail dot com 3 siblings, 0 replies; 5+ messages in thread From: hjl.tools at gmail dot com @ 2015-10-12 12:48 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67850 H.J. Lu <hjl.tools at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |FIXED Target Milestone|--- |5.3 --- Comment #4 from H.J. Lu <hjl.tools at gmail dot com> --- Fixed for 5.3 and 6. No plan to backpor it to 4.9. ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2015-10-12 12:48 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2015-10-05 13:04 [Bug middle-end/67850] New: Wrong call_used_regs used in aggregate_value_p hjl.tools at gmail dot com 2015-10-05 13:35 ` [Bug middle-end/67850] " hjl.tools at gmail dot com 2015-10-07 10:30 ` [Bug target/67850] " hjl at gcc dot gnu.org 2015-10-12 12:26 ` hjl at gcc dot gnu.org 2015-10-12 12:48 ` hjl.tools at gmail dot com
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