https://gcc.gnu.org/g:fa99720e9f3447565d274baaa81e23c2ddab4a67
commit r15-9519-gfa99720e9f3447565d274baaa81e23c2ddab4a67
Author: Tamar Christina <tamar.christ...@arm.com>
Date: Wed Apr 16 13:11:20 2025 +0100
middle-end: force AMDGCN test for vect-early-break_18.c to consistent
architecture [PR119286]
The given test is intended to test vectorization of a strided access done by
having a step of > 1.
GCN target doesn't support load lanes, so the testcase is expected to fail,
other targets create a permuted load here which we then then reject.
However some GCN arch don't seem to support the permuted loads either, so
the
vectorizer tries a gather/scatter. But the indices aren't supported by some
target, so instead the vectorizer scalarizes the loads.
I can't really test for which architecture is being used by the compiler, so
instead this updates the testcase to use one single architecture so we get a
consistent result.
gcc/testsuite/ChangeLog:
PR target/119286
* gcc.dg/vect/vect-early-break_18.c: Force -march=gfx908 for amdgcn.
Diff:
---
gcc/testsuite/gcc.dg/vect/vect-early-break_18.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/gcc/testsuite/gcc.dg/vect/vect-early-break_18.c
b/gcc/testsuite/gcc.dg/vect/vect-early-break_18.c
index edddb44bad66..cd397049c84c 100644
--- a/gcc/testsuite/gcc.dg/vect/vect-early-break_18.c
+++ b/gcc/testsuite/gcc.dg/vect/vect-early-break_18.c
@@ -2,7 +2,7 @@
/* { dg-do compile } */
/* { dg-require-effective-target vect_early_break } */
/* { dg-require-effective-target vect_int } */
-
+/* { dg-additional-options "-march=gfx908" { target amdgcn*-*-* } } */
/* { dg-additional-options "-Ofast" } */
/* { dg-final { scan-tree-dump "LOOP VECTORIZED" "vect" { target
vect_load_lanes } } } */
