https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104209
Bug ID: 104209
Summary: ICE in lra_split_hard_reg_for, at lra-assigns.cc:1837
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: gs...@t-online.de
Target Milestone: ---
With file gcc.dg/torture/pr20314-2.c,
affects versions down to at least r5 :
$ gcc-12-20220123 -c pr20314-2.c -m32 -fPIC
pr20314-2.c: In function 'f1':
pr20314-2.c:5:3: error: 'asm' operand has impossible constraints
5 | __asm__ volatile (""
| ^~~~~~~
pr20314-2.c:9:1: error: unable to find a register to spill
9 | }
| ^
pr20314-2.c:9:1: error: this is the insn:
(insn 96 94 98 2 (set (reg:SI 151 [123])
(reg:SI 123)) "pr20314-2.c":5:3 81 {*movsi_internal}
(expr_list:REG_DEAD (reg:SI 123)
(nil)))
during RTL pass: reload
pr20314-2.c:9:1: internal compiler error: in lra_split_hard_reg_for, at
lra-assigns.cc:1837
0x685898 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
../../gcc/rtl-error.cc:108
0xc1f9e1 lra_split_hard_reg_for()
../../gcc/lra-assigns.cc:1837
0xc19c5b lra(_IO_FILE*)
../../gcc/lra.cc:2420
0xbc7b39 do_reload
../../gcc/ira.cc:5940
0xbc7b39 execute
../../gcc/ira.cc:6126
