[gcc(refs/vendors/redhat/heads/gcc-8-branch)] rs6000: vec_rlnm fix to make builtin work according to ABI

[gcc(refs/vendors/redhat/heads/gcc-8-branch)] rs6000: vec_rlnm fix to make builtin work according to ABI

[Jakub Jelinek]

https://gcc.gnu.org/g:e59e9ffec4c574209477c5cdff544c55e3b58114

commit e59e9ffec4c574209477c5cdff544c55e3b58114
Author: Carl Love <carll@us.ibm.com>
Date:   Tue Mar 31 12:45:34 2020 -0500

    rs6000: vec_rlnm fix to make builtin work according to ABI
    
            Backport from mainline:
              commit e97929e20b2f52e6cfc046c1302324d1b24d95e3
              Author: Carl Love <carll@us.ibm.com>
              Date:   Wed Mar 25 18:33:37 2020 -0500
    
            gcc/ChangeLog
    
            PR target/93819
                * gcc/config/rs6000/altivec.h:
                Fixed swapped arguments for vec_rlnm define.

Diff:
---
 gcc/ChangeLog               | 11 +++++++++++
 gcc/config/rs6000/altivec.h |  2 +-
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index c31160b42f4..775a02e4b78 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,14 @@
+2020-03-31  Carl Love  <cel@us.ibm.com>
+
+	Backport of:
+	  commit e97929e20b2f52e6cfc046c1302324d1b24d95e3
+	  Author: Carl Love <carll@us.ibm.com>
+	  Date:   Wed Mar 25 18:33:37 2020 -0500
+
+	PR target/93819
+        * gcc/config/rs6000/altivec.h:
+        Fixed swapped arguments for vec_rlnm define.
+
 2020-03-31  Carl Love  <cel@us.ibm.com>
 
 	backport of mainline commit
diff --git a/gcc/config/rs6000/altivec.h b/gcc/config/rs6000/altivec.h
index 6c5757eadf5..9ae1a354fc5 100644
--- a/gcc/config/rs6000/altivec.h
+++ b/gcc/config/rs6000/altivec.h
@@ -180,7 +180,7 @@
 #define vec_recipdiv __builtin_vec_recipdiv
 #define vec_rlmi __builtin_vec_rlmi
 #define vec_vrlnm __builtin_vec_rlnm
-#define vec_rlnm(a,b,c) (__builtin_vec_rlnm((a),((b)<<8)|(c)))
+#define vec_rlnm(a,b,c) (__builtin_vec_rlnm((a),((c)<<8)|(b)))
 #define vec_rsqrt __builtin_vec_rsqrt
 #define vec_rsqrte __builtin_vec_rsqrte
 #define vec_signed __builtin_vec_vsigned