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re PR tree-optimization/33576 (segfault in extract_muldiv for cpu2006 benchmark) 

2007-10-03  Sebastian Pop  <sebastian.pop@amd.com>

        PR tree-optimization/33576
        * testsuite/gcc.dg/tree-ssa/pr33576.c: New.
        * tree-loop-linear.c (linear_transform_loops): Call remove_iv.
        * lambda.h (lambda_loopnest_to_gcc_loopnest): New parameter.
        (remove_iv): Declared.
        * lambda-code.c (remove_iv): Not static.
        (lambda_loopnest_to_gcc_loopnest): New parameter remove_ivs.
        Don't remove ivs there, save ivs in the buffer.

From-SVN: r128986
This commit is contained in:
Sebastian Pop 2007-10-03 15:45:10 +00:00 committed by Sebastian Pop
parent 9783a0510d
commit 05023ea487
5 changed files with 44 additions and 2 deletions
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11
gcc/ChangeLog
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@ -1,3 +1,14 @@
2007-10-03 Sebastian Pop <sebastian.pop@amd.com>
PR tree-optimization/33576
* testsuite/gcc.dg/tree-ssa/pr33576.c: New.
* tree-loop-linear.c (linear_transform_loops): Call remove_iv.
* lambda.h (lambda_loopnest_to_gcc_loopnest): New parameter.
(remove_iv): Declared.
* lambda-code.c (remove_iv): Not static.
(lambda_loopnest_to_gcc_loopnest): New parameter remove_ivs.
Don't remove ivs there, save ivs in the buffer.
2007-10-03 Jason Merrill <jason@redhat.com>
PR c++/15764

5
gcc/lambda-code.c
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@ -1639,7 +1639,7 @@ lle_to_gcc_expression (lambda_linear_expression lle,
/* Remove the induction variable defined at IV_STMT. */
static void
void
remove_iv (tree iv_stmt)
{
if (TREE_CODE (iv_stmt) == PHI_NODE)
@ -1692,6 +1692,7 @@ void
lambda_loopnest_to_gcc_loopnest (struct loop *old_loopnest,
VEC(tree,heap) *old_ivs,
VEC(tree,heap) *invariants,
VEC(tree,heap) **remove_ivs,
lambda_loopnest new_loopnest,
lambda_trans_matrix transform,
struct obstack * lambda_obstack)
@ -1861,7 +1862,7 @@ lambda_loopnest_to_gcc_loopnest (struct loop *old_loopnest,
}
/* Remove the now unused induction variable. */
remove_iv (oldiv_stmt);
VEC_safe_push (tree, heap, *remove_ivs, oldiv_stmt);
}
VEC_free (tree, heap, new_ivs);
}

2
gcc/lambda.h
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@ -206,8 +206,10 @@ lambda_loopnest gcc_loopnest_to_lambda_loopnest (struct loop *,
struct obstack *);
void lambda_loopnest_to_gcc_loopnest (struct loop *,
VEC(tree,heap) *, VEC(tree,heap) *,
VEC(tree,heap) **,
lambda_loopnest, lambda_trans_matrix,
struct obstack *);
void remove_iv (tree);
static inline void lambda_vector_negate (lambda_vector, lambda_vector, int);
static inline void lambda_vector_mult_const (lambda_vector, lambda_vector, int, int);

20
gcc/testsuite/gcc.dg/tree-ssa/pr33576.c Normal file
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@ -0,0 +1,20 @@
/* { dg-do compile } */
/* { dg-options "-O2 -ftree-loop-linear" } */
int a1[6][4][4];
short b1[16];
int c1;
void CalculateQuantParam(void)
{
int i, j, k, temp;
for(k=0; k<6; k++)
for(j=0; j<4; j++)
for(i=0; i<4; i++)
{
temp = (i<<2)+j;
a1[k][j][i] = c1/b1[temp];
}
}

8
gcc/tree-loop-linear.c
View File

@ -253,7 +253,10 @@ linear_transform_loops (void)
loop_iterator li;
VEC(tree,heap) *oldivs = NULL;
VEC(tree,heap) *invariants = NULL;
VEC(tree,heap) *remove_ivs = VEC_alloc (tree, heap, 3);
struct loop *loop_nest;
tree oldiv_stmt;
unsigned i;
FOR_EACH_LOOP (li, loop_nest, 0)
{
@ -351,6 +354,7 @@ linear_transform_loops (void)
}
lambda_loopnest_to_gcc_loopnest (loop_nest, oldivs, invariants,
&remove_ivs,
after, trans, &lambda_obstack);
modified = true;
@ -363,8 +367,12 @@ linear_transform_loops (void)
free_data_refs (datarefs);
}
for (i = 0; VEC_iterate (tree, remove_ivs, i, oldiv_stmt); i++)
remove_iv (oldiv_stmt);
VEC_free (tree, heap, oldivs);
VEC_free (tree, heap, invariants);
VEC_free (tree, heap, remove_ivs);
scev_reset ();
if (modified)