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| author | Jakub Jelinek <jakub@redhat.com> | 2011-05-22 21:00:00 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2011-05-22 21:00:00 +0200 |
| commit | ccb1b17ba8e94c59bbf14f8ed24d9e39377b7efb (patch) | |
| tree | f264700c2c973d12b362c40b9b641a0c3b6fe026 | |
| parent | 50ad7db2a849954f37b412fbb466fcda2a655a38 (diff) | |
| download | gcc-ccb1b17ba8e94c59bbf14f8ed24d9e39377b7efb.zip gcc-ccb1b17ba8e94c59bbf14f8ed24d9e39377b7efb.tar.gz gcc-ccb1b17ba8e94c59bbf14f8ed24d9e39377b7efb.tar.bz2 | |
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: r174034
| -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 a022b62..122e4df 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. + 2011-05-22 Tom de Vries <tom@codesourcery.com> PR target/45098 diff --git a/gcc/expmed.c b/gcc/expmed.c index 18a6592..5527c1e 100644 --- a/gcc/expmed.c +++ b/gcc/expmed.c @@ -1769,8 +1769,6 @@ 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. */ @@ -1782,6 +1780,9 @@ extract_fixed_bit_field (enum machine_mode tmode, rtx op0, break; } + if (mode != tmode) + target = 0; + if (GET_MODE_BITSIZE (mode) != (bitsize + bitpos)) { int amount = GET_MODE_BITSIZE (mode) - (bitsize + bitpos); diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index f083968..015b4fa 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. + 2011-05-22 Jason Merrill <jason@redhat.com> * g++.dg/cpp0x/sfinae23.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 0000000..ebe81b3 --- /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); +} |