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re PR tree-optimization/68445 (ICE: internal compiler error: in operator[], at vec.h)

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2015-11-23  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/68445
	* tree-vect-slp.c (vect_create_mask_and_perm): Properly use
	two different strides.

	* gcc.dg/vect/pr68445.c: New testcase.

From-SVN: r230737
This commit is contained in:
Richard Biener 2015-11-23 08:36:59 +00:00 • committed by Richard Biener
parent e63d44c2a9
commit 7706cb01c0
4 changed files with 37 additions and 5 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2015-11-23 Richard Biener <rguenther@suse.de>
PR tree-optimization/68445
* tree-vect-slp.c (vect_create_mask_and_perm): Properly use
two different strides.
2015-11-23 Robin Dapp <rdapp@linux.vnet.ibm.com>
* config/s390/s390.h: Add new symref flags, _NOTALIGN2 etc.

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2015-11-23 Richard Biener <rguenther@suse.de>
PR tree-optimization/68445
* gcc.dg/vect/pr68445.c: New testcase.
2015-11-23 Robin Dapp <rdapp@linux.vnet.ibm.com>
* gcc.target/s390/load-relative-check.c: New test to check

19
gcc/testsuite/gcc.dg/vect/pr68445.c Normal file
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@ -0,0 +1,19 @@
/* { dg-do compile } */
/* { dg-require-effective-target vect_int } */
void IMB_double_fast_x (int *destf, int *dest, int y, int *p1f)
{
int i;
for (i = y; i > 0; i--)
{
*dest++ = 0;
destf[0] = destf[4] = p1f[0];
destf[1] = destf[5] = p1f[1];
destf[2] = destf[6] = p1f[2];
destf[3] = destf[7] = p1f[3];
destf += 8;
p1f += 4;
}
}
/* { dg-final { scan-tree-dump "vectorizing stmts using SLP" "vect" } } */

12
gcc/tree-vect-slp.c
View file

@ -3177,10 +3177,11 @@ vect_create_mask_and_perm (gimple *stmt,
{
tree perm_dest;
gimple *perm_stmt = NULL;
int i, stride;
int i, stride_in, stride_out;
tree first_vec, second_vec, data_ref;
stride = SLP_TREE_NUMBER_OF_VEC_STMTS (node) / ncopies;
stride_out = SLP_TREE_NUMBER_OF_VEC_STMTS (node) / ncopies;
stride_in = dr_chain.length () / ncopies;
/* Initialize the vect stmts of NODE to properly insert the generated
stmts later. */
@ -3202,10 +3203,11 @@ vect_create_mask_and_perm (gimple *stmt,
vect_finish_stmt_generation (stmt, perm_stmt, gsi);
/* Store the vector statement in NODE. */
SLP_TREE_VEC_STMTS (node)[stride * i + vect_stmts_counter] = perm_stmt;
SLP_TREE_VEC_STMTS (node)[stride_out * i + vect_stmts_counter]
= perm_stmt;
first_vec_indx += stride;
second_vec_indx += stride;
first_vec_indx += stride_in;
second_vec_indx += stride_in;
}
}