https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112918
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Ever confirmed|0 |1
Status|UNCONFIRMED |NEW
Last reconfirmed| |2023-12-11
--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Andreas Schwab from comment #7)
> spawn -ignore SIGHUP /daten/aranym/gcc/gcc-20231208/Build/gcc/xgcc
> -B/daten/aranym/gcc/gcc-20231208/Build/gcc/
> /daten/aranym/gcc/gcc-20231208/gcc/testsuite/gcc.dg/torture/vshuf-v16qi.c
> -fdiagnostics-plain-output -O2 -lm -o ./vshuf-v16qi.exe
> during RTL pass: reload
> In file included from
> /daten/aranym/gcc/gcc-20231208/gcc/testsuite/gcc.dg/torture/vshuf-v16qi.c:11:
> /daten/aranym/gcc/gcc-20231208/gcc/testsuite/gcc.dg/torture/vshuf-main.inc:
> In function 'test_3':
> /daten/aranym/gcc/gcc-20231208/gcc/testsuite/gcc.dg/torture/vshuf-main.inc:
> 27:1: internal compiler error: maximum number of generated reload insns per
> insn achieved (90)
> /daten/aranym/gcc/gcc-20231208/gcc/testsuite/gcc.dg/torture/vshuf-16.inc:6:1:
> note: in expansion of macro 'T'
> /daten/aranym/gcc/gcc-20231208/gcc/testsuite/gcc.dg/torture/vshuf-main.inc:
> 28:1: note: in expansion of macro 'TESTS'
> 0xbe89f0 lra_constraints(bool)
> ../../gcc/lra-constraints.cc:5429
> 0xbcffba lra(_IO_FILE*, int)
> ../../gcc/lra.cc:2440
> 0xb7def7 do_reload
> ../../gcc/ira.cc:5973
> 0xb7def7 execute
> ../../gcc/ira.cc:6161
...
(insn 269 268 270 2 (set (reg:QI 226)
(reg:QI 225))
"/space/rguenther/src/gcc/gcc/testsuite/gcc.dg/torture/vshuf-main.inc":28:1 62
{*m68k.md:1130}
(nil))
(insn 270 269 271 2 (set (reg:QI 227)
(reg:QI 226))
"/space/rguenther/src/gcc/gcc/testsuite/gcc.dg/torture/vshuf-main.inc":28:1 62
{*m68k.md:1130}
(nil))
(insn 271 270 272 2 (set (reg:QI 228)
(reg:QI 227))
"/space/rguenther/src/gcc/gcc/testsuite/gcc.dg/torture/vshuf-main.inc":28:1 62
{*m68k.md:1130}
(nil))
(insn 272 271 35 2 (set (subreg:QI (reg:SI 138 [orig:43 _26 ] [43]) 3)
(reg:QI 228))
"/space/rguenther/src/gcc/gcc/testsuite/gcc.dg/torture/vshuf-main.inc":28:1 62
{*m68k.md:1130}
(nil))
which is
(define_insn ""
[(set (match_operand:QI 0 "nonimmediate_operand" "=d,*a,m")
(match_operand:QI 1 "general_src_operand" "dmSi*a,di*a,dmSi"))]
"!TARGET_COLDFIRE"
"* return output_move_qimode (operands);"
[(set_attr "flags_valid" "set")])
271: r138:SI#3=r227:QI
Considering alt=0 of insn 271: (0) =d (1) dmSi*a
0 Super set class reg: reject-=3
0 Non input pseudo reload: reject++
1 Non pseudo reload: reject++
Cycle danger: overall += LRA_MAX_REJECT
overall=605,losers=1,rld_nregs=1
Considering alt=1 of insn 271: (0) *a (1) di*a
0 Super set class reg: reject-=3
0 Costly loser: reject++
0 Non input pseudo reload: reject++
1 Non pseudo reload: reject++
overall=6,losers=1,rld_nregs=1
Considering alt=2 of insn 271: (0) m (1) dmSi
Using memory insn operand 0: reject+=3
0 Non input pseudo reload: reject++
overall=10,losers=1 -- refuse
Choosing alt 1 in insn 271: (0) *a (1) di*a {*m68k.md:1130}
Creating newreg=228, assigning class ADDR_REGS to r228
