Fix compilation on RHEL 7 ppc64le (gcc 4.8)

Fixes GH-10077
Closes GH-10078

Author: ellert

NEWS

@@ -211,6 +211,7 @@ PHP                                                                        NEWS
 - Hash:
   . Fixed bug #81738: buffer overflow in hash_update() on long parameter.
     (CVE-2022-37454) (nicky at mouha dot be)
+  . Fixed bug GH-10077: Fix compilation on RHEL 7 ppc64le. (Mattias Ellert)
 
 - Intl:
   . Update all grandfathered language tags with preferred values

ext/hash/xxhash/xxhash.h

@@ -4129,7 +4129,7 @@ XXH3_accumulate_512_vsx(  void* XXH_RESTRICT acc,
                     const void* XXH_RESTRICT secret)
 {
     /* presumed aligned */
-    unsigned long long* const xacc = (unsigned long long*) acc;
+    unsigned int* const xacc = (unsigned int*) acc;
     xxh_u64x2 const* const xinput   = (xxh_u64x2 const*) input;   /* no alignment restriction */
     xxh_u64x2 const* const xsecret  = (xxh_u64x2 const*) secret;    /* no alignment restriction */
     xxh_u64x2 const v32 = { 32, 32 };
@@ -4145,7 +4145,7 @@ XXH3_accumulate_512_vsx(  void* XXH_RESTRICT acc,
         /* product = ((xxh_u64x2)data_key & 0xFFFFFFFF) * ((xxh_u64x2)shuffled & 0xFFFFFFFF); */
         xxh_u64x2 const product  = XXH_vec_mulo((xxh_u32x4)data_key, shuffled);
         /* acc_vec = xacc[i]; */
-        xxh_u64x2 acc_vec        = vec_xl(0, xacc + 2 * i);
+        xxh_u64x2 acc_vec        = (xxh_u64x2)vec_xl(0, xacc + 4 * i);
         acc_vec += product;
 
         /* swap high and low halves */
@@ -4155,7 +4155,7 @@ XXH3_accumulate_512_vsx(  void* XXH_RESTRICT acc,
         acc_vec += vec_xxpermdi(data_vec, data_vec, 2);
 #endif
         /* xacc[i] = acc_vec; */
-        vec_xst(acc_vec, 0, xacc + 2 * i);
+        vec_xst((xxh_u32x4)acc_vec, 0, xacc + 4 * i);
     }
 }