https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84680
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| |4.8.4
Summary|internal compiler error: |[6/7/8 Regression] internal
|Max. number of generated |compiler error: Max. number
|reload insns per insn is |of generated reload insns
|achieved (90) |per insn is achieved (90)
Ever confirmed|0 |1
Known to fail| |4.9.3, 5.3.0, 6.1.0, 7.3.0,
| |8.0
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed. Bisection points to:
r201915 (gcc 4.9.0):
r201915 | kyukhin | 2013-08-22 02:06:03 -0400 (Thu, 22 Aug 2013) | 135 lines
* common/config/i386/i386-common.c (OPTION_MASK_ISA_AVX512F_SET): New.
...
Before that, GCC would fail with:
pr84680.C: In function ‘void a()’:
pr84680.C:4:56: error: impossible constraint in ‘asm’
asm volatile("" : "=vp" (b) : "0" (__builtin_alloca));
^
