On 16/04/2025 08:57, Tamar Christina wrote:
Hi All,
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.
Bootstrapped Regtested on aarch64-none-linux-gnu and no issues.
Cross checked the failing case on amdgcn-amdhsa
and all pass now.
Ok for master?
This is OK.
Andrew
Thanks,
Tamar
gcc/testsuite/ChangeLog:
PR target/119286
* gcc.dg/vect/vect-early-break_18.c: Force -march=gfx908 for amdgcn.
---
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
edddb44bad66aa419d097f69ca850e5eaa66e014..cd397049c84c47cbd3e9facb87419de58ba5b148
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 } } } */
