From 1610a0e56c0be3e4bfd3034e5323188b1d05badd Mon Sep 17 00:00:00 2001 From: Aurelien Jarno Date: Mon, 10 Sep 2012 14:23:49 +0200 Subject: [PATCH] tcg: mark set_label with TCG_OPF_BB_END flag set_label is effectively the end of a basic block, as no optimization can be made accross it. It was treated as such in the liveness analysis code, but as a special case. Mark it with TCG_OPF_BB_END flag so that this information can be used by other parts of the TCG code, and remove the special case in the liveness analysis code. Cc: Blue Swirl Signed-off-by: Aurelien Jarno Signed-off-by: Michael Roth --- tcg/tcg-opc.h | 2 +- tcg/tcg.c | 5 ----- 2 files changed, 1 insertion(+), 6 deletions(-) diff --git a/tcg/tcg-opc.h b/tcg/tcg-opc.h index 8e06d03..d12e8d0 100644 --- a/tcg/tcg-opc.h +++ b/tcg/tcg-opc.h @@ -36,7 +36,7 @@ DEF(nopn, 0, 0, 1, 0) /* variable number of parameters */ DEF(discard, 1, 0, 0, 0) -DEF(set_label, 0, 0, 1, 0) +DEF(set_label, 0, 0, 1, TCG_OPF_BB_END) DEF(call, 0, 1, 2, TCG_OPF_SIDE_EFFECTS) /* variable number of parameters */ DEF(jmp, 0, 1, 0, TCG_OPF_BB_END | TCG_OPF_SIDE_EFFECTS) DEF(br, 0, 0, 1, TCG_OPF_BB_END | TCG_OPF_SIDE_EFFECTS) diff --git a/tcg/tcg.c b/tcg/tcg.c index 8386b70..c002a88 100644 --- a/tcg/tcg.c +++ b/tcg/tcg.c @@ -1297,11 +1297,6 @@ static void tcg_liveness_analysis(TCGContext *s) args--; } break; - case INDEX_op_set_label: - args--; - /* mark end of basic block */ - tcg_la_bb_end(s, dead_temps); - break; case INDEX_op_debug_insn_start: args -= def->nb_args; break;