https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84679
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-03-08
CC| |msebor at gcc dot gnu.org
Known to work| |4.9.4
Summary|internal compiler error: in |[6/7/8 Regression] internal
|lra_eliminate_reg_if_possib |compiler error: in
|le, at |lra_eliminate_reg_if_possib
|lra-eliminations.c:1382 |le, at
| |lra-eliminations.c:1382
Ever confirmed|0 |1
Known to fail| |5.3.0, 6.4.0, 7.3.0, 8.0
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed. Bisection points to r211475 (gcc 4.10.0):
r211475 | rsandifo | 2014-06-11 12:59:17 -0400 (Wed, 11 Jun 2014) | 34 lines
gcc/
* common.md: New file.
* doc/md.texi: Update description of generic, machine-independent
constraints.
* config/s390/constraints.md (e): Delete.
* Makefile.in (md_file): Include common.md.
* config/m32c/t-m32c (md_file): Likewise.
* genpreds.c (general_mem): New array.
(generic_constraint_letters): Remove constraints now defined by
common.md.
(add_constraint): Map TARGET_MEM_CONSTRAINT to general_mem.
Allow the first character to be '<' or '>' as well.
* genoutput.c (general_mem): New array.
(indep_constraints): Remove constraints now defined by common.md.
(note_constraint): Map TARGET_MEM_CONSTRAINT to general_mem.
Remove special handling of 'm'.
* ira-costs.c (record_reg_classes): Remove special handling of
constraints now defined by common.md.
* ira.c (ira_setup_alts, ira_get_dup_out_num): Likewise.
* ira-lives.c (single_reg_class): Likewise.
(ira_implicitly_set_insn_hard_regs): Likewise.
* lra-constraints.c (reg_class_from_constraints): Likewise.
(process_alt_operands, process_address, curr_insn_transform): Likewise.
* postreload.c (reload_cse_simplify_operands): Likewise.
* reload.c (push_secondary_reload, scratch_reload_class)
(find_reloads, alternative_allows_const_pool_ref): Likewise.
* reload1.c (maybe_fix_stack_asms): Likewise.
* targhooks.c (default_secondary_reload): Likewise.
* stmt.c (parse_output_constraint): Likewise.
* recog.c (preprocess_constraints): Likewise.
(constrain_operands, peep2_find_free_register): Likewise.
(asm_operand_ok): Likewise, but add a comment saying why 'o'
must be handled specially.
