From: Tom Musta <tommu...@gmail.com>
The special case of rlwimi where MB <= ME and SH = 31-ME can be implemented
with a single TCG deposit operation. This replaces the less general case
of SH = MB = 0 and ME = 31.
Signed-off-by: Tom Musta <tommu...@gmail.com>
Suggested-by: Richard Henderson <r...@twiddle.net>
Reviewed-by: Richard Henderson <r...@twiddle.net>
Signed-off-by: Alexander Graf <ag...@suse.de>
---
target-ppc/translate.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)
diff --git a/target-ppc/translate.c b/target-ppc/translate.c
index 47dc903..095b83c 100644
--- a/target-ppc/translate.c
+++ b/target-ppc/translate.c
@@ -1636,12 +1636,9 @@ static void gen_rlwimi(DisasContext *ctx)
mb = MB(ctx->opcode);
me = ME(ctx->opcode);
sh = SH(ctx->opcode);
- if (likely(sh == 0 && mb == 0 && me == 31)) {
-#if defined(TARGET_PPC64)
- tcg_gen_mov_i64(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)]);
-#else
- tcg_gen_ext32u_tl(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)]);
-#endif
+ if (likely(sh == (31-me) && mb <= me)) {
+ tcg_gen_deposit_tl(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rA(ctx->opcode)],
+ cpu_gpr[rS(ctx->opcode)], sh, me - mb + 1);
} else {
target_ulong mask;
TCGv t1;
--
1.8.1.4
