From: Kewen Lin <linkw@linux.ibm.com>
Date: Wed, 13 Oct 2021 05:20:45 +0000 (-0500)
Subject: rs6000/test: Adjust test cases due to O2 vect [PR102658]
X-Git-Tag: basepoints/gcc-13~3949
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=a124c1b0a2595f285c0d8ed863b37b83e14a6566;p=thirdparty%2Fgcc.git

rs6000/test: Adjust test cases due to O2 vect [PR102658]

Commit r12-4240 enables vectorization at O2, this patch is to
adjust some test cases for rs6000 port accordingly.

It simply adds -fno-tree-vectorize to retain original test points.

gcc/testsuite/ChangeLog:

	PR testsuite/102658
	* gcc.target/powerpc/dform-1.c: Adjust as vectorization enabled at O2.
	* gcc.target/powerpc/dform-2.c: Likewise.
	* gcc.target/powerpc/pr80510-2.c: Likewise.
---

diff --git a/gcc/testsuite/gcc.target/powerpc/dform-1.c b/gcc/testsuite/gcc.target/powerpc/dform-1.c
index fac39230fd65..1a0b0cf4c342 100644
--- a/gcc/testsuite/gcc.target/powerpc/dform-1.c
+++ b/gcc/testsuite/gcc.target/powerpc/dform-1.c
@@ -1,6 +1,8 @@
 /* { dg-do compile { target { powerpc*-*-* && lp64 } } } */
 /* { dg-require-effective-target powerpc_p9vector_ok } */
-/* { dg-options "-mpower9-vector -O2" } */
+/* Now O2 enables vectorization by default, which makes expected scalar
+   loads gone, so simply disable it.  */
+/* { dg-options "-mpower9-vector -O2 -fno-tree-vectorize" } */
 
 #ifndef TYPE
 #define TYPE double
diff --git a/gcc/testsuite/gcc.target/powerpc/dform-2.c b/gcc/testsuite/gcc.target/powerpc/dform-2.c
index 994733071e7b..cc91f55b82df 100644
--- a/gcc/testsuite/gcc.target/powerpc/dform-2.c
+++ b/gcc/testsuite/gcc.target/powerpc/dform-2.c
@@ -1,6 +1,8 @@
 /* { dg-do compile { target { powerpc*-*-* && lp64 } } } */
 /* { dg-require-effective-target powerpc_p9vector_ok } */
-/* { dg-options "-mpower9-vector -O2" } */
+/* Now O2 enables vectorization by default, which generates unexpected float
+   conversion for vector construction, so simply disable it.  */
+/* { dg-options "-mpower9-vector -O2 -fno-tree-vectorize" } */
 
 #ifndef TYPE
 #define TYPE float
diff --git a/gcc/testsuite/gcc.target/powerpc/pr80510-2.c b/gcc/testsuite/gcc.target/powerpc/pr80510-2.c
index f85e005be64e..d041d967c8ba 100644
--- a/gcc/testsuite/gcc.target/powerpc/pr80510-2.c
+++ b/gcc/testsuite/gcc.target/powerpc/pr80510-2.c
@@ -1,7 +1,9 @@
 /* { dg-do compile { target { powerpc*-*-* } } } */
 /* { dg-skip-if "" { powerpc*-*-darwin* } } */
 /* { dg-require-effective-target powerpc_p8vector_ok } */
-/* { dg-options "-mdejagnu-cpu=power8 -O2" } */
+/* Now O2 enables vectorization by default, which generates unexpected VSR
+   to GPR movement for vector construction, so simply disable it.  */
+/* { dg-options "-mdejagnu-cpu=power8 -O2 -fno-tree-vectorize" } */
 
 /* Make sure that STXSSPX is generated for float scalars in Altivec registers
    on power7 instead of moving the value to a FPR register and doing a X-FORM