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Optimisations: avoid generation of duplicated micro-ops. 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3305 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
j_mayer 2007-10-01 03:03:51 +00:00
parent b48d7d697f
commit 056b05f8d2
1 changed files with 14 additions and 3 deletions
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17
target-ppc/translate.c
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@ -2996,6 +2996,7 @@ static inline void gen_bcond (DisasContext *ctx, int type)
case 6:
if (type == BCOND_IM) {
gen_goto_tb(ctx, 0, target);
goto out;
} else {
#if defined(TARGET_PPC64)
if (ctx->sf_mode)
@ -3004,8 +3005,9 @@ static inline void gen_bcond (DisasContext *ctx, int type)
#endif
gen_op_b_T1();
gen_op_reset_T0();
goto no_test;
}
goto no_test;
break;
}
} else {
mask = 1 << (3 - (bi & 0x03));
@ -3079,6 +3081,7 @@ static inline void gen_bcond (DisasContext *ctx, int type)
gen_op_debug();
gen_op_exit_tb();
}
out:
ctx->exception = POWERPC_EXCP_BRANCH;
}
@ -3381,11 +3384,15 @@ GEN_HANDLER(mtmsrd, 0x1F, 0x12, 0x05, 0x001EF801, PPC_64B)
/* Special form that does not need any synchronisation */
gen_op_update_riee();
} else {
/* XXX: we need to update nip before the store
* if we enter power saving mode, we will exit the loop
* directly from ppc_store_msr
*/
gen_update_nip(ctx, ctx->nip);
gen_op_store_msr();
/* Must stop the translation as machine state (may have) changed */
/* Note that mtmsr is not always defined as context-synchronizing */
GEN_STOP(ctx);
ctx->exception = POWERPC_EXCP_STOP;
}
#endif
}
@ -3405,6 +3412,10 @@ GEN_HANDLER(mtmsr, 0x1F, 0x12, 0x04, 0x001FF801, PPC_MISC)
/* Special form that does not need any synchronisation */
gen_op_update_riee();
} else {
/* XXX: we need to update nip before the store
* if we enter power saving mode, we will exit the loop
* directly from ppc_store_msr
*/
gen_update_nip(ctx, ctx->nip);
#if defined(TARGET_PPC64)
if (!ctx->sf_mode)
@ -3414,7 +3425,7 @@ GEN_HANDLER(mtmsr, 0x1F, 0x12, 0x04, 0x001FF801, PPC_MISC)
gen_op_store_msr();
/* Must stop the translation as machine state (may have) changed */
/* Note that mtmsrd is not always defined as context-synchronizing */
GEN_STOP(ctx);
ctx->exception = POWERPC_EXCP_STOP;
}
#endif
}