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| 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 /gcc/expmed.c | |
| 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
Diffstat (limited to 'gcc/expmed.c')
| -rw-r--r-- | gcc/expmed.c | 5 |
1 files changed, 3 insertions, 2 deletions
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 |