diff options
| author | Jakub Jelinek <jakub@redhat.com> | 2020-03-25 19:06:45 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@redhat.com> | 2020-03-25 19:06:45 +0100 |
| commit | 6e4cd3cd259af2b5e04986a3f2222528a4f9f762 (patch) | |
| tree | afd4ccab92b1baa6322728fc5eecf170fadde9fc /gcc/tree.c | |
| parent | b5228b1bc8cb81be494f5b5faa68b6b859ce0227 (diff) | |
| download | gcc-6e4cd3cd259af2b5e04986a3f2222528a4f9f762.zip gcc-6e4cd3cd259af2b5e04986a3f2222528a4f9f762.tar.gz gcc-6e4cd3cd259af2b5e04986a3f2222528a4f9f762.tar.bz2 | |
arm: Fix ICE caused by arm_gen_dicompare_reg [PR94292]
The following testcase ICEs, because arm_gen_dicompare_reg creates invalid
RTL which then propagates into DEBUG_INSNs and ICEs while handling them.
The problem is that this function emits
(insn 18 17 19 2 (set (reg:CC_DNE 100 cc)
(compare (ior:SI (ne:SI (subreg:SI (reg:DI 129) 0)
(subreg:SI (reg:DI 114 [ _2 ]) 0))
(ne:SI (subreg:SI (reg:DI 129) 4)
(subreg:SI (reg:DI 114 [ _2 ]) 4)))
(const_int 0 [0]))) "pr94292.c":7:11 325 {*cmp_ior}
(nil))
and the invalid thing is that the COMPARE has VOIDmode. Setting a
non-VOIDmode SET_DEST to VOIDmode SET_SRC is only valid if the SET_SRC is
CONST_INT/CONST_DOUBLE.
The following patch fixes it by giving the COMPARE the same mode as it gives
to the SET_DEST cc register.
2020-03-25 Jakub Jelinek <jakub@redhat.com>
PR target/94292
* config/arm/arm.c (arm_gen_dicompare_reg): Set mode of COMPARE to
mode rather than VOIDmode.
* gcc.dg/pr94292.c: New test.
Diffstat (limited to 'gcc/tree.c')
0 files changed, 0 insertions, 0 deletions