From ab92678d0a24e7ef8d4d93d18e5c0df8619874fe Mon Sep 17 00:00:00 2001 From: Tom Musta Date: Mon, 25 Aug 2014 14:25:39 -0500 Subject: target-ppc: Special Case of rlwimi Should Use Deposit 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 Suggested-by: Richard Henderson Reviewed-by: Richard Henderson Signed-off-by: Alexander Graf --- target-ppc/translate.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) (limited to 'target-ppc') diff --git a/target-ppc/translate.c b/target-ppc/translate.c index 47dc90311c..095b83c147 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; -- cgit v1.2.3