Created attachment 1527523 [details] e_sqrtl.i Compiling the attached file with gcc -c -O2 -fstack-protector-strong e_sqrtl.i on ppc64le results in an out-of-memory error. I don't know if this ppc64le-specific because glibc uses ldbl-128ibm only on ppc64le. The backtrace suggests it could be LRA-related: (gdb) bt #0 0x000000001097b348 in lra_create_live_ranges_1(bool, bool) () #1 0x0000000010f1dee0 in lra_create_live_ranges(bool, bool) () #2 0x0000000010f136ac in lra(_IO_FILE*) () #3 0x0000000010ef1f58 in (anonymous namespace)::pass_reload::execute(function*) () #4 0x000000001098bdf4 in execute_pass_list_1(opt_pass*) () #5 0x000000001098c5c4 in execute_pass_list_1(opt_pass*) () #6 0x0000000010f3f068 in execute_pass_list(function*, opt_pass*) () #7 0x0000000010e300b4 in cgraph_node::expand() () #8 0x0000000010e2ee64 in symbol_table::compile() () #9 0x0000000010e2deac in symbol_table::finalize_compilation_unit() () #10 0x0000000010f63a10 in compile_file() () #11 0x0000000010730e58 in toplev::main(int, char**) () #12 0x0000000010732ff4 in main () (gdb) finish Run till exit from #0 0x000000001097b348 in lra_create_live_ranges_1(bool, bool) () 0x0000000010f1dee0 in lra_create_live_ranges(bool, bool) () (gdb) finish Run till exit from #0 0x0000000010f1dee0 in lra_create_live_ranges(bool, bool) () 0x0000000010f136ac in lra(_IO_FILE*) () (gdb) finish Run till exit from #0 0x0000000010f136ac in lra(_IO_FILE*) () And that never completes. I don't have full backtraces because I cannot find the debuginfo package for /usr/libexec/gcc/ppc64le-redhat-linux/9/cc1.
Sorry, this is with gcc-9.0.1-0.3.fc30.ppc64le.
It turns out that cpp-debuginfo has the debugging information for cc1. With that, I get: #0 0x00000000109627ac in lra_constraints (first_p=<optimized out>) a t ../../gcc/lra-constraints.c:4763 #1 0x0000000010f131a4 in lra (f=<optimized out>) at ../../gcc/lra.c:2461 #2 0x0000000010ef1f58 in do_reload () at ../../gcc/ira.c:5516 #3 (anonymous namespace)::pass_reload::execute (this=<optimized out>) at ../../gcc/ira.c:5700 #4 0x000000001098bdf4 in execute_one_pass (pass=0x11884570) at ../../gc c/passes.c:2483 #5 execute_pass_list_1 (pass=0x11884570) at ../../gcc/passes.c:2569 #6 0x000000001098c5c4 in execute_pass_list_1 (pass=0x11883430) at ../.. /gcc/passes.c:2570 #7 0x0000000010f3f068 in execute_pass_list (fn=<optimized out>, pass=<optimized out>) at ../../gcc/passes.c:2580 #8 0x0000000010e300b4 in cgraph_node::expand (this=this@entry =0x7ffff5a64218) at ../../gcc/context.h:48 #9 0x0000000010e2ee64 in expand_all_functions () at ../../gcc/cgraphunit.c:2333 #10 symbol_table::compile (this=this@entry=0x7ffff5a80000) at ../../gcc/cgraphunit.c:2684 #11 0x0000000010e2deac in symbol_table::finalize_compilation_unit (this= 0x7ffff5a80000) at ../../gcc/cgraphunit.c:2862 #12 0x0000000010f63a10 in compile_file () at ../../gcc/toplev.c:482 #13 0x0000000010730e58 in do_compile () at ../../gcc/toplev.c:2177 #14 toplev::main (this=0x7fffffffef56, argc=<optimized out>, argv=<optimized out>) at ../../gcc/toplev.c:2312 #15 0x0000000010732ff4 in main (argc=<optimized out>, argv= 0x7ffffffff378) at ../../gcc/main.c:39 Looks like we never exit the outer for loop here in gcc/lra.c:lra: │2457 for (;;) │ │2458 { │ │2459 for (;;) │ │2460 { │ │2461 bool reloads_p = lra_constraints (lra_constraint_iter == 0); │ │2462 /* Constraint transformations may result in that eliminable │ │2463 hard regs become uneliminable and pseudos which use them │ │2464 should be spilled. It is better to do it before pseudo │ │2465 assignments. │ │2466 │ │2467 For example, rs6000 can make │ │2468 RS6000_PIC_OFFSET_TABLE_REGNUM uneliminable if we started │ │2469 to use a constant pool. */ │ │2470 lra_eliminate (false, false); │
This bug appears to have been reported against 'rawhide' during the Fedora 31 development cycle. Changing version to '31'.
This bug appears to have been reported against 'rawhide' during the Fedora 31 development cycle. Changing version to 31.
This message is a reminder that Fedora 31 is nearing its end of life. Fedora will stop maintaining and issuing updates for Fedora 31 on 2020-11-24. It is Fedora's policy to close all bug reports from releases that are no longer maintained. At that time this bug will be closed as EOL if it remains open with a Fedora 'version' of '31'. Package Maintainer: If you wish for this bug to remain open because you plan to fix it in a currently maintained version, simply change the 'version' to a later Fedora version. Thank you for reporting this issue and we are sorry that we were not able to fix it before Fedora 31 is end of life. If you would still like to see this bug fixed and are able to reproduce it against a later version of Fedora, you are encouraged change the 'version' to a later Fedora version prior this bug is closed as described in the policy above. Although we aim to fix as many bugs as possible during every release's lifetime, sometimes those efforts are overtaken by events. Often a more recent Fedora release includes newer upstream software that fixes bugs or makes them obsolete.
Fedora 31 changed to end-of-life (EOL) status on 2020-11-24. Fedora 31 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. If you are unable to reopen this bug, please file a new report against the current release. If you experience problems, please add a comment to this bug. Thank you for reporting this bug and we are sorry it could not be fixed.