From 6f396c8f38fb47dda5622880f7f2c646b145bc23 Mon Sep 17 00:00:00 2001 From: Aurelien Jarno Date: Fri, 14 Jan 2011 20:39:18 +0100 Subject: 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 --- target-sh4/translate.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'target-sh4') diff --git a/target-sh4/translate.c b/target-sh4/translate.c index 04bc94a0b1..65ea7f61c7 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); -- cgit v1.2.3