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Subject: [Qemu-trivial] fix evsrwu and others for powerpcspe
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GEN_SPEOP_ARITH2 declares non-local temporaries then calls gen_op_evsrwu/evsrws/evslw which generates branch insn.

--- target/ppc/translate/spe-impl.inc.c.orig
+++ target/ppc/translate/spe-impl.inc.c
@@ -158,8 +158,8 @@
         gen_exception(ctx, POWERPC_EXCP_SPEU);                                \
         return;                                                               \
     }                                                                         \
-    t0 = tcg_temp_new_i32();                                                  \
-    t1 = tcg_temp_new_i32();                                                  \
+    t0 = tcg_temp_local_new_i32();                                                  \
+    t1 = tcg_temp_local_new_i32();                                                  \
                                                                               \
     tcg_gen_trunc_tl_i32(t0, cpu_gpr[rA(ctx->opcode)]);                       \
     tcg_gen_trunc_tl_i32(t1, cpu_gpr[rB(ctx->opcode)]);                       \