mirror/gcc
2
0
Fork 0
mirror of git://gcc.gnu.org/git/gcc.git synced 2025-04-13 08:00:40 +08:00
Code Issues Packages Projects Releases Wiki Activity

re PR tree-optimization/17624 (ICE: SSA corruption (another one))

Browse Source 
2004-09-24  Andrew Pinski  <pinskia@physics.uc.edu>

        PR tree-opt/17624
        * tree-ssa-forwprop.c (record_single_argument_cond_exprs):
        Reject if any of the operands occur in an abnormal PHI.

From-SVN: r88032
This commit is contained in:
Andrew Pinski 2004-09-24 13:26:29 +00:00 committed by Andrew Pinski
parent 7e53ab6605
commit 54e075fe1e
2 changed files with 36 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
2004-09-24 Andrew Pinski <pinskia@physics.uc.edu>
PR tree-opt/17624
* tree-ssa-forwprop.c (record_single_argument_cond_exprs):
Reject if any of the operands occur in an abnormal PHI.
2004-09-24 Andreas Schwab <schwab@suse.de>
* tree-ssa-dom.c (record_range): Fix violation of strict aliasing

30
gcc/tree-ssa-forwprop.c
View File

@ -212,6 +212,11 @@ record_single_argument_cond_exprs (varray_type cond_worklist,
|| !CONSTANT_CLASS_P (op1)
|| !INTEGRAL_TYPE_P (TREE_TYPE (op1)))
continue;
/* Don't propagate if the first operand occurs in
an abnormal PHI. */
if (SSA_NAME_OCCURS_IN_ABNORMAL_PHI (op0))
continue;
}
/* These cases require comparisons of a naked SSA_NAME or
@ -235,6 +240,18 @@ record_single_argument_cond_exprs (varray_type cond_worklist,
|| (TREE_CODE (op1) != SSA_NAME
&& !is_gimple_min_invariant (op1)))
continue;
/* Don't propagate if the first operand occurs in
an abnormal PHI. */
if (TREE_CODE (op0) == SSA_NAME
&& SSA_NAME_OCCURS_IN_ABNORMAL_PHI (op0))
continue;
/* Don't propagate if the second operand occurs in
an abnormal PHI. */
if (TREE_CODE (op1) == SSA_NAME
&& SSA_NAME_OCCURS_IN_ABNORMAL_PHI (op1))
continue;
}
/* If TEST_VAR is set from a TRUTH_NOT_EXPR, then it
@ -247,6 +264,12 @@ record_single_argument_cond_exprs (varray_type cond_worklist,
if (TREE_CODE (def_rhs) != SSA_NAME
&& !is_gimple_min_invariant (def_rhs))
continue;
/* Don't propagate if the operand occurs in
an abnormal PHI. */
if (TREE_CODE (def_rhs) == SSA_NAME
&& SSA_NAME_OCCURS_IN_ABNORMAL_PHI (def_rhs))
continue;
}
/* If TEST_VAR was set from a cast of an integer type
@ -268,6 +291,13 @@ record_single_argument_cond_exprs (varray_type cond_worklist,
;
else
continue;
/* Don't propagate if the operand occurs in
an abnormal PHI. */
if (TREE_CODE (TREE_OPERAND (def_rhs, 0)) == SSA_NAME
&& SSA_NAME_OCCURS_IN_ABNORMAL_PHI (TREE_OPERAND
(def_rhs, 0)))
continue;
}
else
continue;