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PR60276 fix for single-lane SLP

Message ID 20240513125532.2066A386F828@sourceware.org
State New
Headers show
Series PR60276 fix for single-lane SLP | expand

Commit Message

Richard Biener May 13, 2024, 12:55 p.m. UTC 
When enabling single-lane SLP and not splitting groups the fix for
PR60276 is no longer effective since it for unknown reason exempted
pure SLP.  The following removes this exemption, making
gcc.dg/vect/pr60276.c PASS even with --param vect-single-lane-slp=1

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

	PR tree-optimization/60276
	* tree-vect-stmts.cc (vectorizable_load): Do not exempt
	pure_slp grouped loads from the STMT_VINFO_MIN_NEG_DIST
	restriction.
---
 gcc/tree-vect-stmts.cc | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)
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Patch

diff --git a/gcc/tree-vect-stmts.cc b/gcc/tree-vect-stmts.cc
index 21e8fe98e44..b8a71605f1b 100644
--- a/gcc/tree-vect-stmts.cc
+++ b/gcc/tree-vect-stmts.cc
@@ -9995,8 +9995,7 @@  vectorizable_load (vec_info *vinfo,
 
       /* Invalidate assumptions made by dependence analysis when vectorization
 	 on the unrolled body effectively re-orders stmts.  */
-      if (!PURE_SLP_STMT (stmt_info)
-	  && STMT_VINFO_MIN_NEG_DIST (stmt_info) != 0
+      if (STMT_VINFO_MIN_NEG_DIST (stmt_info) != 0
 	  && maybe_gt (LOOP_VINFO_VECT_FACTOR (loop_vinfo),
 		       STMT_VINFO_MIN_NEG_DIST (stmt_info)))
 	{