[gcc(refs/vendors/ARM/heads/arm-perf-staging)] rs6000: Backport u8bit_cint_operand predicate

[Tamar Christina]

https://gcc.gnu.org/g:7e3896a42d18e5c24fb952f431cd140634cd33c5

commit 7e3896a42d18e5c24fb952f431cd140634cd33c5
Author: Peter Bergner <bergner@linux.ibm.com>
Date:   Wed Jun 24 13:03:42 2020 -0500

    rs6000: Backport u8bit_cint_operand predicate
    
    Backport from master.
    
    2020-05-11  Kelvin Nilsen  <wschmidt@linux.ibm.com>
    
    gcc/
            * config/rs6000/predicates.md (u8bit_cint_operand): New predicate.

Diff:
---
 gcc/config/rs6000/predicates.md | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/gcc/config/rs6000/predicates.md b/gcc/config/rs6000/predicates.md
index bf04e4d431f..529c2beb773 100644
--- a/gcc/config/rs6000/predicates.md
+++ b/gcc/config/rs6000/predicates.md
@@ -234,6 +234,11 @@
   (and (match_code "const_int")
        (match_test "IN_RANGE (INTVAL (op), 0, 127)")))
 
+;; Return 1 if op is an unsigned 8-bit constant integer.
+(define_predicate "u8bit_cint_operand"
+  (and (match_code "const_int")
+       (match_test "IN_RANGE (INTVAL (op), 0, 255)")))
+
 ;; Return 1 if op is a signed 8-bit constant integer.
 ;; Integer multiplication complete more quickly
 (define_predicate "s8bit_cint_operand"