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| author | Aurelien Jarno <aurelien@aurel32.net> | 2012-09-10 14:23:49 +0200 |
|---|---|---|
| committer | Aurelien Jarno <aurelien@aurel32.net> | 2012-09-19 21:40:46 +0200 |
| commit | 332864bd95257111bf457e3f0501114028c107d6 (patch) | |
| tree | 21f0b5adb837fb8d01c891d9ad510607590fc741 | |
| parent | 5c2d2a9ee5f1978ae980598fba80151c761105a0 (diff) | |
| download | qemu-332864bd95257111bf457e3f0501114028c107d6.tar.gz | |
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 <blauwirbel@gmail.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
| -rw-r--r-- | tcg/tcg-opc.h | 2 | ||||
| -rw-r--r-- | tcg/tcg.c | 5 |
2 files changed, 1 insertions, 6 deletions
diff --git a/tcg/tcg-opc.h b/tcg/tcg-opc.h index 8e06d03b17..d12e8d01e9 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) @@ -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; |