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assert instead of silently failing code gen

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* graphite-isl-ast-to-gimple.c (get_rename_from_scev): Assert instead of
	setting codegen_error to fail codegen.

From-SVN: r232932
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Sebastian Pop 2016-01-28 16:38:52 +00:00 committed by Sebastian Pop
parent 9925bb881f
commit 9b496f67e7
2 changed files with 11 additions and 20 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2016-01-28 Sebastian Pop <s.pop@samsung.com>
* graphite-isl-ast-to-gimple.c (get_rename_from_scev): Assert instead of
setting codegen_error to fail codegen.
2016-01-28 Jason Merrill <jason@redhat.com>
* tree.h (BINFO_FLAG_0): Rename from BINFO_MARKED.

26
gcc/graphite-isl-ast-to-gimple.c
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@ -1833,31 +1833,18 @@ get_rename_from_scev (tree old_name, gimple_seq *stmts, loop_p loop,
tree scev = scalar_evolution_in_region (region->region, loop, old_name);
/* At this point we should know the exact scev for each
scalar SSA_NAME used in the scop: all the other scalar
SSA_NAMEs should have been translated out of SSA using
arrays with one element. */
tree new_expr;
if (chrec_contains_undetermined (scev))
{
codegen_error = true;
return build_zero_cst (TREE_TYPE (old_name));
}
scalar SSA_NAME used in the scop. */
gcc_assert (!chrec_contains_undetermined (scev));
new_expr = chrec_apply_map (scev, iv_map);
tree new_expr = chrec_apply_map (scev, iv_map);
/* The apply should produce an expression tree containing
the uses of the new induction variables. We should be
able to use new_expr instead of the old_name in the newly
generated loop nest. */
if (chrec_contains_undetermined (new_expr)
|| tree_contains_chrecs (new_expr, NULL))
{
codegen_error = true;
return build_zero_cst (TREE_TYPE (old_name));
}
gcc_assert (!chrec_contains_undetermined (new_expr)
&& !tree_contains_chrecs (new_expr, NULL));
/* We should check all the operands and all of them should dominate the use at
new_expr. */
if (TREE_CODE (new_expr) == SSA_NAME)
{
basic_block bb = gimple_bb (SSA_NAME_DEF_STMT (new_expr));
@ -1898,8 +1885,7 @@ get_rename_from_scev (tree old_name, gimple_seq *stmts, loop_p loop,
substitution map RENAME_MAP, inserting the gimplification code at
GSI_TGT, for the translation REGION, with the original copied
statement in LOOP, and using the induction variable renaming map
IV_MAP. Returns true when something has been renamed. codegen_error
is set when the code generation cannot continue. */
IV_MAP. Returns true when something has been renamed. */
bool
translate_isl_ast_to_gimple::rename_uses (gimple *copy,