Hi,
For nvptx we have:
...
FAIL: gcc.dg/tree-ssa/ssa-dom-cse-2.c scan-tree-dump optimized "return 28;"
...
The test-case is compiled with -O3, which implies -ftree-loop-vectorize
and -ftree-slp-vectorize.
I've investigated the test-case on x86_64, and there the test-case fails
when specifying -fno-tree-loop-vectorize, but passes again when adding
-fno-tree-slp-vectorize.
For nvptx, loop vectorization does nothing but slp vectorization manages
to do a transformation, which matches the failing scenario on x86_64,
and with similar gimple code.
So, I think we expect this scan test to fail for nvptx.
Tested on nvptx and committed.
Thanks,
- Tom
Xfail ssa-dom-cse-2.c for nvptx
2018-01-08 Tom de Vries <t...@codesourcery.com>
* gcc.dg/tree-ssa/ssa-dom-cse-2.c: Xfail scan for nvptx.
---
gcc/testsuite/gcc.dg/tree-ssa/ssa-dom-cse-2.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/ssa-dom-cse-2.c b/gcc/testsuite/gcc.dg/tree-ssa/ssa-dom-cse-2.c
index a660e82..7e88516 100644
--- a/gcc/testsuite/gcc.dg/tree-ssa/ssa-dom-cse-2.c
+++ b/gcc/testsuite/gcc.dg/tree-ssa/ssa-dom-cse-2.c
@@ -25,4 +25,4 @@ foo ()
but the loop reads only one element at a time, and DOM cannot resolve these.
The same happens on powerpc depending on the SIMD support available. */
-/* { dg-final { scan-tree-dump "return 28;" "optimized" { xfail { { alpha*-*-* hppa*64*-*-* } || { lp64 && { powerpc*-*-* sparc*-*-* riscv*-*-* } } } } } } */
+/* { dg-final { scan-tree-dump "return 28;" "optimized" { xfail { { alpha*-*-* hppa*64*-*-* nvptx*-*-* } || { lp64 && { powerpc*-*-* sparc*-*-* riscv*-*-* } } } } } } */
