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author | Richard Henderson <richard.henderson@linaro.org> | 2024-03-22 15:38:32 -1000 |
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committer | Richard Henderson <richard.henderson@linaro.org> | 2024-05-15 09:58:44 +0200 |
commit | 0dcd6640e49c3cbd534e5a1d39338bcd6e691e18 (patch) | |
tree | 70c83a930a418adb2bd5b35bc9c939e7c72b5a7c /target/hppa/translate.c | |
parent | 43541db0c40dad6291ce1dcb76b7729f55704893 (diff) | |
download | qemu-0dcd6640e49c3cbd534e5a1d39338bcd6e691e18.zip qemu-0dcd6640e49c3cbd534e5a1d39338bcd6e691e18.tar.gz qemu-0dcd6640e49c3cbd534e5a1d39338bcd6e691e18.tar.bz2 |
target/hppa: Delay computation of IAQ_Next
We no longer have to allocate a temp and perform an
addition before translation of the rest of the insn.
Reviewed-by: Helge Deller <deller@gmx.de>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'target/hppa/translate.c')
-rw-r--r-- | target/hppa/translate.c | 26 |
1 files changed, 10 insertions, 16 deletions
diff --git a/target/hppa/translate.c b/target/hppa/translate.c index 220665d..9189e03 100644 --- a/target/hppa/translate.c +++ b/target/hppa/translate.c @@ -1807,6 +1807,7 @@ static bool do_dbranch(DisasContext *ctx, int64_t disp, if (ctx->null_cond.c == TCG_COND_NEVER && ctx->null_lab == NULL) { install_link(ctx, link, false); ctx->iaoq_n = dest; + ctx->iaoq_n_var = NULL; if (is_n) { ctx->null_cond.c = TCG_COND_ALWAYS; } @@ -1863,11 +1864,6 @@ static bool do_cbranch(DisasContext *ctx, int64_t disp, bool is_n, ctx->null_lab = NULL; } nullify_set(ctx, n); - if (ctx->iaoq_n == -1) { - /* The temporary iaoq_n_var died at the branch above. - Regenerate it here instead of saving it. */ - tcg_gen_addi_i64(ctx->iaoq_n_var, cpu_iaoq_b, 4); - } gen_goto_tb(ctx, 0, ctx->iaoq_b, ctx->iaoq_n); } @@ -4631,8 +4627,6 @@ static void hppa_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cs) ctx->iaoq_f = (ctx->base.pc_first & ~iasq_f) + ctx->privilege; ctx->iaoq_b = (diff ? ctx->iaoq_f + diff : -1); #endif - ctx->iaoq_n = -1; - ctx->iaoq_n_var = NULL; ctx->zero = tcg_constant_i64(0); @@ -4684,14 +4678,8 @@ static void hppa_tr_translate_insn(DisasContextBase *dcbase, CPUState *cs) /* Set up the IA queue for the next insn. This will be overwritten by a branch. */ - if (ctx->iaoq_b == -1) { - ctx->iaoq_n = -1; - ctx->iaoq_n_var = tcg_temp_new_i64(); - tcg_gen_addi_i64(ctx->iaoq_n_var, cpu_iaoq_b, 4); - } else { - ctx->iaoq_n = ctx->iaoq_b + 4; - ctx->iaoq_n_var = NULL; - } + ctx->iaoq_n_var = NULL; + ctx->iaoq_n = ctx->iaoq_b == -1 ? -1 : ctx->iaoq_b + 4; if (unlikely(ctx->null_cond.c == TCG_COND_ALWAYS)) { ctx->null_cond.c = TCG_COND_NEVER; @@ -4742,7 +4730,13 @@ static void hppa_tr_translate_insn(DisasContextBase *dcbase, CPUState *cs) ? DISAS_EXIT : DISAS_IAQ_N_UPDATED); } else if (ctx->iaoq_b == -1) { - copy_iaoq_entry(ctx, cpu_iaoq_b, -1, ctx->iaoq_n_var); + if (ctx->iaoq_n_var) { + copy_iaoq_entry(ctx, cpu_iaoq_b, -1, ctx->iaoq_n_var); + } else { + tcg_gen_addi_i64(cpu_iaoq_b, cpu_iaoq_b, 4); + tcg_gen_andi_i64(cpu_iaoq_b, cpu_iaoq_b, + gva_offset_mask(ctx->tb_flags)); + } } break; |