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| author | Alejandro Martinez <alejandro.martinezvicente@arm.com> | 2019-05-28 13:48:44 +0000 |
|---|---|---|
| committer | Alejandro Martinez <alejandro@gcc.gnu.org> | 2019-05-28 13:48:44 +0000 |
| commit | 997636716c5dde7d59d026726a6f58918069f122 (patch) | |
| tree | d18d1d7f5388bc0bb743583ce506e284c8eb60d3 /gcc/tree-vectorizer.h | |
| parent | 8b4e7143550cd1f3f4b1dca005a5e656506979d9 (diff) | |
| download | gcc-997636716c5dde7d59d026726a6f58918069f122.zip gcc-997636716c5dde7d59d026726a6f58918069f122.tar.gz gcc-997636716c5dde7d59d026726a6f58918069f122.tar.bz2 | |
Current vectoriser doesn't support masked loads for SLP.
Current vectoriser doesn't support masked loads for SLP. We should add that, to
allow things like:
void
f (int *restrict x, int *restrict y, int *restrict z, int n)
{
for (int i = 0; i < n; i += 2)
{
x[i] = y[i] ? z[i] : 1;
x[i + 1] = y[i + 1] ? z[i + 1] : 2;
}
}
to be vectorized using contiguous loads rather than LD2 and ST2.
This patch was motivated by SVE, but it is completely generic and should apply
to any architecture with masked loads.
From-SVN: r271704
Diffstat (limited to 'gcc/tree-vectorizer.h')
| -rw-r--r-- | gcc/tree-vectorizer.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/gcc/tree-vectorizer.h b/gcc/tree-vectorizer.h index d5fd469..4db30cc 100644 --- a/gcc/tree-vectorizer.h +++ b/gcc/tree-vectorizer.h @@ -396,7 +396,7 @@ typedef struct _loop_vec_info : public vec_info { /* Condition under which this loop is analyzed and versioned. */ tree num_iters_assumptions; - /* Threshold of number of iterations below which vectorzation will not be + /* Threshold of number of iterations below which vectorization will not be performed. It is calculated from MIN_PROFITABLE_ITERS and PARAM_MIN_VECT_LOOP_BOUND. */ unsigned int th; @@ -946,6 +946,9 @@ struct _stmt_vec_info { and OPERATION_BITS without changing the result. */ unsigned int operation_precision; signop operation_sign; + + /* True if this is only suitable for SLP vectorization. */ + bool slp_vect_only_p; }; /* Information about a gather/scatter call. */ @@ -1041,6 +1044,7 @@ STMT_VINFO_BB_VINFO (stmt_vec_info stmt_vinfo) #define STMT_VINFO_NUM_SLP_USES(S) (S)->num_slp_uses #define STMT_VINFO_REDUC_TYPE(S) (S)->reduc_type #define STMT_VINFO_REDUC_DEF(S) (S)->reduc_def +#define STMT_VINFO_SLP_VECT_ONLY(S) (S)->slp_vect_only_p #define DR_GROUP_FIRST_ELEMENT(S) \ (gcc_checking_assert ((S)->dr_aux.dr), (S)->first_element) |