procyberian/gcc
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

re PR tree-optimization/34017 (ICE in lambda_loopnest_to_gcc_loopnest with -O2 -ftree-loop-linear)

Browse source 
2008-01-09  Sebastian Pop  <sebastian.pop@amd.com>

	PR tree-optimization/34017
	* lambda-code.c (lambda_loopnest_to_gcc_loopnest): Generate code
	also for PHI_NODE expressions.

	* gcc.dg/tree-ssa/pr34017.c: New.

From-SVN: r131435
This commit is contained in:
Sebastian Pop 2008-01-09 21:22:19 +00:00 • committed by Sebastian Pop
parent 684f4f6a33
commit 64cbaacecb
4 changed files with 46 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
gcc/ChangeLog
View file

@ -1,3 +1,9 @@
2008-01-09 Sebastian Pop <sebastian.pop@amd.com>
PR tree-optimization/34017
* lambda-code.c (lambda_loopnest_to_gcc_loopnest): Generate code
also for PHI_NODE expressions.
2008-01-09 Jan Hubicka <jh@suse.cz>
PR tree-optimization/34708

13
gcc/lambda-code.c
View file

@ -1675,7 +1675,6 @@ remove_iv (tree iv_stmt)
}
}
/* Transform a lambda loopnest NEW_LOOPNEST, which had TRANSFORM applied to
it, back into gcc code. This changes the
loops, their induction variables, and their bodies, so that they
@ -1699,6 +1698,7 @@ lambda_loopnest_to_gcc_loopnest (struct loop *old_loopnest,
{
struct loop *temp;
size_t i = 0;
int j;
size_t depth = 0;
VEC(tree,heap) *new_ivs = NULL;
tree oldiv;
@ -1837,8 +1837,6 @@ lambda_loopnest_to_gcc_loopnest (struct loop *old_loopnest,
tree newiv, stmts;
lambda_body_vector lbv, newlbv;
gcc_assert (TREE_CODE (stmt) != PHI_NODE);
/* Compute the new expression for the induction
variable. */
depth = VEC_length (tree, new_ivs);
@ -1850,7 +1848,8 @@ lambda_loopnest_to_gcc_loopnest (struct loop *old_loopnest,
newiv = lbv_to_gcc_expression (newlbv, TREE_TYPE (oldiv),
new_ivs, &stmts);
if (stmts)
if (stmts && TREE_CODE (stmt) != PHI_NODE)
{
bsi = bsi_for_stmt (stmt);
bsi_insert_before (&bsi, stmts, BSI_SAME_STMT);
@ -1858,6 +1857,12 @@ lambda_loopnest_to_gcc_loopnest (struct loop *old_loopnest,
FOR_EACH_IMM_USE_ON_STMT (use_p, imm_iter)
propagate_value (use_p, newiv);
if (stmts && TREE_CODE (stmt) == PHI_NODE)
for (j = 0; j < PHI_NUM_ARGS (stmt); j++)
if (PHI_ARG_DEF (stmt, j) == newiv)
bsi_insert_on_edge (PHI_ARG_EDGE (stmt, j), stmts);
update_stmt (stmt);
}

5
gcc/testsuite/ChangeLog
View file

@ -1,3 +1,8 @@
2008-01-09 Sebastian Pop <sebastian.pop@amd.com>
PR tree-optimization/34017
* gcc.dg/tree-ssa/pr34017.c: New.
2008-01-09 Richard Guenther <rguenther@suse.de>
Andrew Pinski <andrew_pinski@playstation.sony.com>

26
gcc/testsuite/gcc.dg/tree-ssa/pr34017.c Normal file
View file

@ -0,0 +1,26 @@
/* { dg-do compile } */
/* { dg-options "-O2 -ftree-loop-linear" } */
extern int s;
void
foo (int *x, int y, int z)
{
int m, n;
int o;
int p = x[0];
o = s;
for (m = 0; m < s; m++)
for (n = 0; n < s; n++)
{
if (x[n] != p)
continue;
if (m > z)
z = m;
if (n < o)
o = n;
}
for (m = y; m <= z; m++)
{
}
}