https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100909
Bug ID: 100909
Summary: powerpc64le: Regression causing unexpected error with
IBM long double
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: tuliom at ascii dot art.br
Target Milestone: ---
Created attachment 50934
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=50934&action=edit
Pre-processed s_modff128-ifunc.c file from glibc
I've recently started seeing this regression while building glibc on
powerpc64le:
gcc -m64 test.i -c -mlong-double-128 -mabi=ibmlongdouble
/home/tuliom/tmp/at-build-tray/at15.0-0-alpha.suse-15_ppc64le_ppc64le/builds/glibc_1-64/math/s_modff128-ifunc.c:8:1:
error: ‘-mabi=ibmlongdouble’ requires ‘-mlong-double-128’
8 | DECL_ALIAS_s_modf (modf);
| ^~~~~~
Notice that both parameters are being passed to GCC.
I've bisected this issue to:
commit ebd5e86c0f41dc1d692f9b2b68a510b1f6835a3e
Author: Martin Liska <mli...@suse.cz>
Date: Wed Mar 10 15:12:31 2021 +0100
Improve global state for options.
gcc/c-family/ChangeLog:
PR tree-optimization/92860
PR target/99592
* c-attribs.c (handle_optimize_attribute): Save target node
before calling parse_optimize_options and save it in case
it changes.
* c-pragma.c (handle_pragma_target): Similarly for pragma.
(handle_pragma_pop_options): Likewise here.
gcc/ChangeLog:
PR tree-optimization/92860
PR target/99592
* optc-save-gen.awk: Remove exceptions.
I can still reproduce it with commit ee9548b36a7f.
