In the LoongArch architecture, the reason for not adding the 128-bit
vector-width-*hi* instruction template in the GCC back end is that it causes
program performance loss, so we can only add the "-mlasx" compilation option
to use 256-bit vectorization functions in test files.

gcc/testsuite/ChangeLog:

        * gcc.dg/vect/bb-slp-pattern-1.c: If you are testing on the
        LoongArch architecture, you need to add the "-mlasx" compilation
        option to generate vectorized code.
        * gcc.dg/vect/slp-widen-mult-half.c: Dito.
        * gcc.dg/vect/vect-widen-mult-const-s16.c: Dito.
        * gcc.dg/vect/vect-widen-mult-const-u16.c: Dito.
        * gcc.dg/vect/vect-widen-mult-half-u8.c: Dito.
        * gcc.dg/vect/vect-widen-mult-half.c: Dito.
        * gcc.dg/vect/vect-widen-mult-u16.c: Dito.
        * gcc.dg/vect/vect-widen-mult-u8-s16-s32.c: Dito.
        * gcc.dg/vect/vect-widen-mult-u8-u32.c: Dito.
        * gcc.dg/vect/vect-widen-mult-u8.c: Dito.
---
 gcc/testsuite/gcc.dg/vect/bb-slp-pattern-1.c           | 1 +
 gcc/testsuite/gcc.dg/vect/slp-widen-mult-half.c        | 1 +
 gcc/testsuite/gcc.dg/vect/vect-widen-mult-const-s16.c  | 1 +
 gcc/testsuite/gcc.dg/vect/vect-widen-mult-const-u16.c  | 1 +
 gcc/testsuite/gcc.dg/vect/vect-widen-mult-half-u8.c    | 1 +
 gcc/testsuite/gcc.dg/vect/vect-widen-mult-half.c       | 1 +
 gcc/testsuite/gcc.dg/vect/vect-widen-mult-u16.c        | 1 +
 gcc/testsuite/gcc.dg/vect/vect-widen-mult-u8-s16-s32.c | 1 +
 gcc/testsuite/gcc.dg/vect/vect-widen-mult-u8-u32.c     | 1 +
 gcc/testsuite/gcc.dg/vect/vect-widen-mult-u8.c         | 1 +
 10 files changed, 10 insertions(+)

diff --git a/gcc/testsuite/gcc.dg/vect/bb-slp-pattern-1.c 
b/gcc/testsuite/gcc.dg/vect/bb-slp-pattern-1.c
index a3ff0f5b3da..5ae99225273 100644
--- a/gcc/testsuite/gcc.dg/vect/bb-slp-pattern-1.c
+++ b/gcc/testsuite/gcc.dg/vect/bb-slp-pattern-1.c
@@ -1,4 +1,5 @@
 /* { dg-require-effective-target vect_int } */
+/* { dg-additional-options "-mlasx" { target loongarch*-*-* } } */
 
 #include <stdarg.h>
 #include "tree-vect.h"
diff --git a/gcc/testsuite/gcc.dg/vect/slp-widen-mult-half.c 
b/gcc/testsuite/gcc.dg/vect/slp-widen-mult-half.c
index 72811eb852e..b69ade33886 100644
--- a/gcc/testsuite/gcc.dg/vect/slp-widen-mult-half.c
+++ b/gcc/testsuite/gcc.dg/vect/slp-widen-mult-half.c
@@ -1,6 +1,7 @@
 /* Disabling epilogues until we find a better way to deal with scans.  */
 /* { dg-additional-options "--param vect-epilogues-nomask=0" } */
 /* { dg-require-effective-target vect_int } */
+/* { dg-additional-options "-mlasx" { target loongarch*-*-* } } */
 
 #include "tree-vect.h"
 
diff --git a/gcc/testsuite/gcc.dg/vect/vect-widen-mult-const-s16.c 
b/gcc/testsuite/gcc.dg/vect/vect-widen-mult-const-s16.c
index dfbb2171c00..53c9b84ca01 100644
--- a/gcc/testsuite/gcc.dg/vect/vect-widen-mult-const-s16.c
+++ b/gcc/testsuite/gcc.dg/vect/vect-widen-mult-const-s16.c
@@ -2,6 +2,7 @@
 /* { dg-additional-options "--param vect-epilogues-nomask=0" } */
 /* { dg-require-effective-target vect_int } */
 /* { dg-additional-options "-fno-ipa-icf" } */
+/* { dg-additional-options "-mlasx" { target loongarch*-*-*} } */
 
 #include "tree-vect.h"
 
diff --git a/gcc/testsuite/gcc.dg/vect/vect-widen-mult-const-u16.c 
b/gcc/testsuite/gcc.dg/vect/vect-widen-mult-const-u16.c
index c2ad58f69e7..e9db8285b66 100644
--- a/gcc/testsuite/gcc.dg/vect/vect-widen-mult-const-u16.c
+++ b/gcc/testsuite/gcc.dg/vect/vect-widen-mult-const-u16.c
@@ -2,6 +2,7 @@
 /* { dg-additional-options "--param vect-epilogues-nomask=0" } */
 /* { dg-require-effective-target vect_int } */
 /* { dg-additional-options "-fno-ipa-icf" } */
+/* { dg-additional-options "-mlasx" { target loongarch*-*-*} } */
 
 #include "tree-vect.h"
 
diff --git a/gcc/testsuite/gcc.dg/vect/vect-widen-mult-half-u8.c 
b/gcc/testsuite/gcc.dg/vect/vect-widen-mult-half-u8.c
index bfdcbaa09fb..607f3178f90 100644
--- a/gcc/testsuite/gcc.dg/vect/vect-widen-mult-half-u8.c
+++ b/gcc/testsuite/gcc.dg/vect/vect-widen-mult-half-u8.c
@@ -2,6 +2,7 @@
 /* { dg-additional-options "--param vect-epilogues-nomask=0" } */
 /* { dg-require-effective-target vect_int } */
 /* { dg-additional-options "-fno-ipa-icf" } */
+/* { dg-additional-options "-mlasx" { target loongarch*-*-*} } */
 
 #include "tree-vect.h"
 
diff --git a/gcc/testsuite/gcc.dg/vect/vect-widen-mult-half.c 
b/gcc/testsuite/gcc.dg/vect/vect-widen-mult-half.c
index e46b0cc3135..cd13d826937 100644
--- a/gcc/testsuite/gcc.dg/vect/vect-widen-mult-half.c
+++ b/gcc/testsuite/gcc.dg/vect/vect-widen-mult-half.c
@@ -1,6 +1,7 @@
 /* Disabling epilogues until we find a better way to deal with scans.  */
 /* { dg-additional-options "--param vect-epilogues-nomask=0" } */
 /* { dg-require-effective-target vect_int } */
+/* { dg-additional-options "-mlasx" { target loongarch*-*-*} } */
 
 #include "tree-vect.h"
 
diff --git a/gcc/testsuite/gcc.dg/vect/vect-widen-mult-u16.c 
b/gcc/testsuite/gcc.dg/vect/vect-widen-mult-u16.c
index 14411ef43ed..258d253f401 100644
--- a/gcc/testsuite/gcc.dg/vect/vect-widen-mult-u16.c
+++ b/gcc/testsuite/gcc.dg/vect/vect-widen-mult-u16.c
@@ -1,6 +1,7 @@
 /* Disabling epilogues until we find a better way to deal with scans.  */
 /* { dg-additional-options "--param vect-epilogues-nomask=0" } */
 /* { dg-require-effective-target vect_int } */
+/* { dg-additional-options "-mlasx" { target loongarch*-*-*} } */
 
 #include <stdarg.h>
 #include "tree-vect.h"
diff --git a/gcc/testsuite/gcc.dg/vect/vect-widen-mult-u8-s16-s32.c 
b/gcc/testsuite/gcc.dg/vect/vect-widen-mult-u8-s16-s32.c
index f40def5dddf..3baafca7b54 100644
--- a/gcc/testsuite/gcc.dg/vect/vect-widen-mult-u8-s16-s32.c
+++ b/gcc/testsuite/gcc.dg/vect/vect-widen-mult-u8-s16-s32.c
@@ -1,6 +1,7 @@
 /* Disabling epilogues until we find a better way to deal with scans.  */
 /* { dg-additional-options "--param vect-epilogues-nomask=0" } */
 /* { dg-require-effective-target vect_int } */
+/* { dg-additional-options "-mlasx" { target loongarch*-*-*} } */
 
 #include <stdarg.h>
 #include "tree-vect.h"
diff --git a/gcc/testsuite/gcc.dg/vect/vect-widen-mult-u8-u32.c 
b/gcc/testsuite/gcc.dg/vect/vect-widen-mult-u8-u32.c
index 63866390835..bcfbe198a3f 100644
--- a/gcc/testsuite/gcc.dg/vect/vect-widen-mult-u8-u32.c
+++ b/gcc/testsuite/gcc.dg/vect/vect-widen-mult-u8-u32.c
@@ -1,5 +1,6 @@
 /* { dg-additional-options "--param vect-epilogues-nomask=0" } */
 /* { dg-require-effective-target vect_int } */
+/* { dg-additional-options "-mlasx" { target loongarch*-*-* } } */
 
 #include <stdarg.h>
 #include "tree-vect.h"
diff --git a/gcc/testsuite/gcc.dg/vect/vect-widen-mult-u8.c 
b/gcc/testsuite/gcc.dg/vect/vect-widen-mult-u8.c
index 78ad74b5d49..e3bf13b14fa 100644
--- a/gcc/testsuite/gcc.dg/vect/vect-widen-mult-u8.c
+++ b/gcc/testsuite/gcc.dg/vect/vect-widen-mult-u8.c
@@ -1,5 +1,6 @@
 /* { dg-additional-options "--param vect-epilogues-nomask=0" } */
 /* { dg-require-effective-target vect_int } */
+/* { dg-additional-options "-mlasx" { target loongarch*-*-*} } */
 
 #include <stdarg.h>
 #include "tree-vect.h"
-- 
2.20.1

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