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authorAurelien Jarno <aurelien@aurel32.net>2011-01-14 20:39:18 +0100
committerAurelien Jarno <aurelien@aurel32.net>2011-01-14 20:39:18 +0100
commit6f396c8f38fb47dda5622880f7f2c646b145bc23 (patch)
tree6b6f0d20a830b2eed17cefc07d424f3fbc8aa72e
parent4f6493ff8a73bbb24ad81b080cc256c1c896b7fb (diff)
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>
-rw-r--r--target-sh4/translate.c6
1 files changed, 3 insertions, 3 deletions
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);