diff options
| author | Jakub Jelinek <jakub@redhat.com> | 2011-05-22 21:02:59 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2011-05-22 21:02:59 +0200 |
| commit | bba3a46ec2abdcf42113873f1c990ffcd869ddc3 (patch) | |
| tree | 6f3e5930c61bd6265fca63c7ef9d5f2305cfc8bb | |
| parent | 603057618384112ca847168c9bcc63fb1b9ac31e (diff) | |
| download | gcc-bba3a46ec2abdcf42113873f1c990ffcd869ddc3.tar.gz | |
re PR middle-end/49029 (ICE in simplify_subreg, at simplify-rtx.c:5266)
PR middle-end/49029
* expmed.c (extract_fixed_bit_field): Test whether target can be used
only after deciding which mode to use.
* gcc.c-torture/compile/pr49029.c: New test.
From-SVN: r174036
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/expmed.c | 5 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.c-torture/compile/pr49029.c | 10 |
4 files changed, 24 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 40b44267163..1b91045304d 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2011-05-22 Jakub Jelinek <jakub@redhat.com> + + PR middle-end/49029 + * expmed.c (extract_fixed_bit_field): Test whether target can be used + only after deciding which mode to use. + 2011-05-21 Eric Botcazou <ebotcazou@adacore.com> * config/sparc/sparc.md (setjmp): Handle PIC mode and use the hard diff --git a/gcc/expmed.c b/gcc/expmed.c index 6c35f8eb4b4..0d44b2b4d54 100644 --- a/gcc/expmed.c +++ b/gcc/expmed.c @@ -1875,8 +1875,6 @@ extract_fixed_bit_field (enum machine_mode tmode, rtx op0, /* To extract a signed bit-field, first shift its msb to the msb of the word, then arithmetic-shift its lsb to the lsb of the word. */ op0 = force_reg (mode, op0); - if (mode != tmode) - target = 0; /* Find the narrowest integer mode that contains the field. */ @@ -1888,6 +1886,9 @@ extract_fixed_bit_field (enum machine_mode tmode, rtx op0, break; } + if (mode != tmode) + target = 0; + if (GET_MODE_BITSIZE (mode) != (bitsize + bitpos)) { tree amount diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 8b92221e57b..4360d132eae 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2011-05-22 Jakub Jelinek <jakub@redhat.com> + + PR middle-end/49029 + * gcc.c-torture/compile/pr49029.c: New test. + 2011-05-20 Jason Merrill <jason@redhat.com> * g++.dg/cpp0x/constexpr-static7.C: New. diff --git a/gcc/testsuite/gcc.c-torture/compile/pr49029.c b/gcc/testsuite/gcc.c-torture/compile/pr49029.c new file mode 100644 index 00000000000..ebe81b31b28 --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/compile/pr49029.c @@ -0,0 +1,10 @@ +/* PR middle-end/49029 */ +struct S { volatile unsigned f : 11; signed g : 30; } __attribute__((packed)); +struct T { volatile struct S h; } __attribute__((packed)) a; +void foo (int); + +void +bar () +{ + foo (a.h.g); +} |