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| author | Richard Guenther <rguenther@suse.de> | 2010-02-26 13:34:38 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2010-02-26 13:34:38 +0000 |
| commit | 2f81659160adbbdb8ae6fbe80bbddfcf4bfcac13 (patch) | |
| tree | 34c433c5896a376908b666c2976d2a1df592a0e3 | |
| parent | 7ce321b3e30e47927e1b25bcc132a5c329fd7de3 (diff) | |
| download | gcc-2f81659160adbbdb8ae6fbe80bbddfcf4bfcac13.zip gcc-2f81659160adbbdb8ae6fbe80bbddfcf4bfcac13.tar.gz gcc-2f81659160adbbdb8ae6fbe80bbddfcf4bfcac13.tar.bz2 | |
re PR tree-optimization/43188 ("error: alignment of array elements is greater than element size")
2010-02-26 Richard Guenther <rguenther@suse.de>
PR tree-optimization/43188
* tree-vect-stmts.c (get_vectype_for_scalar_type): Do not build
vector types of over-aligned element type.
* gcc.c-torture/compile/pr43188.c: New testcase.
From-SVN: r157088
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.c-torture/compile/pr43188.c | 6 | ||||
| -rw-r--r-- | gcc/tree-vect-stmts.c | 7 |
4 files changed, 23 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 5c889ad..047ba5e 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2010-02-26 Richard Guenther <rguenther@suse.de> + + PR tree-optimization/43188 + * tree-vect-stmts.c (get_vectype_for_scalar_type): Do not build + vector types of over-aligned element type. + 2010-02-26 Uros Bizjak <ubizjak@gmail.com> PR target/43175 diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 8c78047..09fc468 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2010-02-26 Richard Guenther <rguenther@suse.de> + + PR tree-optimization/43188 + * gcc.c-torture/compile/pr43188.c: New testcase. + 2010-02-26 H.J. Lu <hongjiu.lu@intel.com> PR target/43175 diff --git a/gcc/testsuite/gcc.c-torture/compile/pr43188.c b/gcc/testsuite/gcc.c-torture/compile/pr43188.c new file mode 100644 index 0000000..bbc6f42 --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/compile/pr43188.c @@ -0,0 +1,6 @@ +int *__attribute__((__aligned__(16))) *p; + +int main (void) +{ + return **p; +} diff --git a/gcc/tree-vect-stmts.c b/gcc/tree-vect-stmts.c index 9923090..ce604b3 100644 --- a/gcc/tree-vect-stmts.c +++ b/gcc/tree-vect-stmts.c @@ -4405,13 +4405,18 @@ tree get_vectype_for_scalar_type (tree scalar_type) { enum machine_mode inner_mode = TYPE_MODE (scalar_type); - int nbytes = GET_MODE_SIZE (inner_mode); + unsigned int nbytes = GET_MODE_SIZE (inner_mode); int nunits; tree vectype; if (nbytes == 0 || nbytes >= UNITS_PER_SIMD_WORD (inner_mode)) return NULL_TREE; + /* We can't build a vector type of elements with alignment bigger than + their size. */ + if (nbytes < TYPE_ALIGN_UNIT (scalar_type)) + return NULL_TREE; + /* FORNOW: Only a single vector size per mode (UNITS_PER_SIMD_WORD) is expected. */ nunits = UNITS_PER_SIMD_WORD (inner_mode) / nbytes; |