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| author | Aurelien Jarno <aurelien@aurel32.net> | 2011-01-14 20:39:18 +0100 |
|---|---|---|
| committer | Aurelien Jarno <aurelien@aurel32.net> | 2011-01-14 20:39:18 +0100 |
| commit | 6f396c8f38fb47dda5622880f7f2c646b145bc23 (patch) | |
| tree | 6b6f0d20a830b2eed17cefc07d424f3fbc8aa72e /target-sh4 | |
| parent | 4f6493ff8a73bbb24ad81b080cc256c1c896b7fb (diff) | |
| download | qemu-6f396c8f38fb47dda5622880f7f2c646b145bc23.zip qemu-6f396c8f38fb47dda5622880f7f2c646b145bc23.tar.gz qemu-6f396c8f38fb47dda5622880f7f2c646b145bc23.tar.bz2 | |
target-sh4: simplify comparisons after a 'and' op
When a TCG variable is anded with a value and the compared with the same
value, we can simply invert the comparison and compare it with 0. The
generated code is smaller.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Diffstat (limited to 'target-sh4')
| -rw-r--r-- | target-sh4/translate.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/target-sh4/translate.c b/target-sh4/translate.c index 04bc94a..65ea7f6 100644 --- a/target-sh4/translate.c +++ b/target-sh4/translate.c @@ -332,7 +332,7 @@ static inline void gen_branch_slot(uint32_t delayed_pc, int t) tcg_gen_movi_i32(cpu_delayed_pc, delayed_pc); sr = tcg_temp_new(); tcg_gen_andi_i32(sr, cpu_sr, SR_T); - tcg_gen_brcondi_i32(TCG_COND_NE, sr, t ? SR_T : 0, label); + tcg_gen_brcondi_i32(t ? TCG_COND_EQ:TCG_COND_NE, sr, 0, label); tcg_gen_ori_i32(cpu_flags, cpu_flags, DELAY_SLOT_TRUE); gen_set_label(label); } @@ -347,7 +347,7 @@ static void gen_conditional_jump(DisasContext * ctx, l1 = gen_new_label(); sr = tcg_temp_new(); tcg_gen_andi_i32(sr, cpu_sr, SR_T); - tcg_gen_brcondi_i32(TCG_COND_EQ, sr, SR_T, l1); + tcg_gen_brcondi_i32(TCG_COND_NE, sr, 0, l1); gen_goto_tb(ctx, 0, ifnott); gen_set_label(l1); gen_goto_tb(ctx, 1, ift); @@ -362,7 +362,7 @@ static void gen_delayed_conditional_jump(DisasContext * ctx) l1 = gen_new_label(); ds = tcg_temp_new(); tcg_gen_andi_i32(ds, cpu_flags, DELAY_SLOT_TRUE); - tcg_gen_brcondi_i32(TCG_COND_EQ, ds, DELAY_SLOT_TRUE, l1); + tcg_gen_brcondi_i32(TCG_COND_NE, ds, 0, l1); gen_goto_tb(ctx, 1, ctx->pc + 2); gen_set_label(l1); tcg_gen_andi_i32(cpu_flags, cpu_flags, ~DELAY_SLOT_TRUE); |