Fix lower_vec_shuffle.

1: It can never fail. 2: It should mask the input indicies. From-SVN: r179563

Fix lower_vec_shuffle.
1: It can never fail. 2: It should mask the input indicies. From-SVN: r179563
067f5960 · Richard Henderson · Richard Henderson · 9fff751c · 067f5960 · 067f5960
Commit 067f5960 authored Oct 05, 2011 by Richard Henderson Committed by Richard Henderson Oct 05, 2011
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gcc/ChangeLog
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gcc/tree-vect-generic.c
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--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
+2011-10-05  Richard Henderson  <rth@redhat.com>
+	* tree-vect-generic.c (vector_element): Never fail.  Use
+	build_zero_cst.  Tidy up type references.
+	(lower_vec_shuffle): Never fail.  Mask shuffle indicies.  Reduce
+	code duplication.  Do update_stmt here ...
+	(expand_vector_operations_1): ... not here.
 2011-10-05  Uros Bizjak  <ubizjak@gmail.com>
 	* config/i386/i386.c (distance_non_agu_define): Simplify calculation
--- a/gcc/tree-vect-generic.c
+++ b/gcc/tree-vect-generic.c