--- mesa-21.3.8/src/gallium/auxiliary/gallivm/lp_bld_init.h.orig	2024-08-14 18:37:13.000000000 +0200
+++ mesa-21.3.8/src/gallium/auxiliary/gallivm/lp_bld_init.h	2024-08-23 04:32:20.283151297 +0200
@@ -129,6 +129,7 @@
 lp_bld_ppc_disable_denorms(void)
 {
 #if DETECT_ARCH_PPC_64
+#ifdef _ARCH_PWR5
    /* Set the NJ bit in VSCR to 0 so denormalized values are handled as
     * specified by IEEE standard (PowerISA 2.06 - Section 6.3). This guarantees
     * that some rounding and half-float to float handling does not round
@@ -149,6 +150,7 @@
       );
    }
 #endif
+#endif
 }
 
 #ifdef __cplusplus