diff options
| author | Jakub Jelinek <jakub@redhat.com> | 2019-06-05 11:41:13 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2019-06-05 11:41:13 +0200 |
| commit | d301c1a41d7ee2dd35aac12bda09c8ced73a36f6 (patch) | |
| tree | 16abf16563e4b50cc344b830edde6a31f5c0bef1 /gcc | |
| parent | e0aecd6e9a5a7c77bb356a511da7e64ef0837855 (diff) | |
| download | gcc-d301c1a41d7ee2dd35aac12bda09c8ced73a36f6.zip gcc-d301c1a41d7ee2dd35aac12bda09c8ced73a36f6.tar.gz gcc-d301c1a41d7ee2dd35aac12bda09c8ced73a36f6.tar.bz2 | |
re PR debug/90733 (ICE in simplify_subreg, at simplify-rtx.c:6440)
PR debug/90733
* var-tracking.c (vt_expand_loc_callback): Don't create raw subregs
with VOIDmode inner operands.
* gcc.dg/pr90733.c: New test.
From-SVN: r271952
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/pr90733.c | 22 | ||||
| -rw-r--r-- | gcc/var-tracking.c | 2 |
4 files changed, 34 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index f5208e1..7c1bd52 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2019-06-05 Jakub Jelinek <jakub@redhat.com> + + PR debug/90733 + * var-tracking.c (vt_expand_loc_callback): Don't create raw subregs + with VOIDmode inner operands. + 2019-06-05 Richard Biener <rguenther@suse.de> PR middle-end/90726 diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 35a2d54..75a0f76 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2019-06-05 Jakub Jelinek <jakub@redhat.com> + + PR debug/90733 + * gcc.dg/pr90733.c: New test. + 2019-06-05 Richard Biener <rguenther@suse.de> PR middle-end/90726 diff --git a/gcc/testsuite/gcc.dg/pr90733.c b/gcc/testsuite/gcc.dg/pr90733.c new file mode 100644 index 0000000..7d2a7fb --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr90733.c @@ -0,0 +1,22 @@ +/* PR debug/90733 */ +/* { dg-do compile } */ +/* { dg-options "-g -O2 -w" } */ + +struct S { unsigned a : 1; }; +union U { struct S b; _Complex unsigned c; }; + +union U +foo (union U d) +{ + union U e = d; + return e; +} + +int +bar (void) +{ + union U x, y; + x.c = x.b.a; + y = foo (x); + return x.c != y.c; +} diff --git a/gcc/var-tracking.c b/gcc/var-tracking.c index c9de934..c2b4204 100644 --- a/gcc/var-tracking.c +++ b/gcc/var-tracking.c @@ -8491,7 +8491,7 @@ vt_expand_loc_callback (rtx x, bitmap regs, /* Invalid SUBREGs are ok in debug info. ??? We could try alternate expansions for the VALUE as well. */ - if (!result) + if (!result && GET_MODE (subreg) != VOIDmode) result = gen_rtx_raw_SUBREG (GET_MODE (x), subreg, SUBREG_BYTE (x)); return result; |