diff mbox series

tree-optimization/112366 - remove assert for failed live lane code gen

Message ID 20231103110048.9D5211348C@imap2.suse-dmz.suse.de
State New
Headers show
Series tree-optimization/112366 - remove assert for failed live lane code gen | expand

Commit Message

Richard Biener Nov. 3, 2023, 11 a.m. UTC 
The following removes a bogus assert constraining the uses that
could appear when a built from scalar defs SLP node constrains
code generation in a way so earlier uses of the vector CTOR
components fail to get vectorized.  We can't really constrain the
operation such use appears in.

Bootstrapped and tested on x86_64-unknown-linux-gnu, pushed.

	PR tree-optimization/112366
	* tree-vect-loop.cc (vectorizable_live_operation): Remove
	assert.
---
 gcc/tree-vect-loop.cc | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)
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Patch

diff --git a/gcc/tree-vect-loop.cc b/gcc/tree-vect-loop.cc
index 3b28c826b3b..2a43176bcfd 100644
--- a/gcc/tree-vect-loop.cc
+++ b/gcc/tree-vect-loop.cc
@@ -10778,7 +10778,7 @@  vectorizable_live_operation (vec_info *vinfo, stmt_vec_info stmt_info,
 		|| !PURE_SLP_STMT (vect_stmt_to_vectorize (use_stmt_info))))
 	  {
 	    /* ???  This can happen when the live lane ends up being
-	       used in a vector construction code-generated by an
+	       rooted in a vector construction code-generated by an
 	       external SLP node (and code-generation for that already
 	       happened).  See gcc.dg/vect/bb-slp-47.c.
 	       Doing this is what would happen if that vector CTOR
@@ -10791,11 +10791,6 @@  vectorizable_live_operation (vec_info *vinfo, stmt_vec_info stmt_info,
 		&& !vect_stmt_dominates_stmt_p (SSA_NAME_DEF_STMT (new_tree),
 						use_stmt))
 	      {
-		enum tree_code code = gimple_assign_rhs_code (use_stmt);
-		gcc_checking_assert (code == SSA_NAME
-				     || code == CONSTRUCTOR
-				     || code == VIEW_CONVERT_EXPR
-				     || CONVERT_EXPR_CODE_P (code));
 		if (dump_enabled_p ())
 		  dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location,
 				   "Using original scalar computation for "