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| author | Aurelien Jarno <aurelien@aurel32.net> | 2011-05-17 18:25:45 +0200 |
|---|---|---|
| committer | Aurelien Jarno <aurelien@aurel32.net> | 2011-05-23 22:38:13 +0200 |
| commit | 6b64b624cde336f3df1146483e7858f5fa814f95 (patch) | |
| tree | a42075d9cf0489db4a06fc135b9f53f3cc368886 /tcg/tcg.c | |
| parent | 866cb6cb21b91809f3f5c49c7c4268573552a108 (diff) | |
| download | focaccia-qemu-6b64b624cde336f3df1146483e7858f5fa814f95.tar.gz focaccia-qemu-6b64b624cde336f3df1146483e7858f5fa814f95.zip | |
tcg: mark dead output argument in op_dead_args
If an op is not removed and has dead output arguments, mark it in op_dead_args similarly to what is done for input arguments. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Diffstat (limited to 'tcg/tcg.c')
| -rw-r--r-- | tcg/tcg.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/tcg/tcg.c b/tcg/tcg.c index 9a48cb9ff8..82d3e1db77 100644 --- a/tcg/tcg.c +++ b/tcg/tcg.c @@ -1245,8 +1245,12 @@ static void tcg_liveness_analysis(TCGContext *s) do_not_remove_call: /* output args are dead */ + dead_args = 0; for(i = 0; i < nb_oargs; i++) { arg = args[i]; + if (dead_temps[arg]) { + dead_args |= (1 << i); + } dead_temps[arg] = 1; } @@ -1256,7 +1260,6 @@ static void tcg_liveness_analysis(TCGContext *s) } /* input args are live */ - dead_args = 0; for(i = nb_oargs; i < nb_iargs + nb_oargs; i++) { arg = args[i]; if (arg != TCG_CALL_DUMMY_ARG) { @@ -1313,8 +1316,12 @@ static void tcg_liveness_analysis(TCGContext *s) do_not_remove: /* output args are dead */ + dead_args = 0; for(i = 0; i < nb_oargs; i++) { arg = args[i]; + if (dead_temps[arg]) { + dead_args |= (1 << i); + } dead_temps[arg] = 1; } @@ -1327,7 +1334,6 @@ static void tcg_liveness_analysis(TCGContext *s) } /* input args are live */ - dead_args = 0; for(i = nb_oargs; i < nb_oargs + nb_iargs; i++) { arg = args[i]; if (dead_temps[arg]) { |