diff options
| author | Richard Henderson <rth@twiddle.net> | 2016-06-19 22:59:13 -0700 |
|---|---|---|
| committer | Richard Henderson <rth@twiddle.net> | 2016-07-05 20:50:13 -0700 |
| commit | 59d7c14eeff8d2ad7f61aed86ce5a176113bc153 (patch) | |
| tree | a35fd8794ff364683cd31b650affc4f3d9289ce1 /tcg/s390 | |
| parent | 120c1084ed53ba2967ba2a6e751cdfb00a17c246 (diff) | |
| download | qemu-59d7c14eeff8d2ad7f61aed86ce5a176113bc153.zip | |
tcg: Optimize spills of constants
While we can store constants via constrants on INDEX_op_st_i32 et al,
we weren't able to spill constants to backing store.
Add a new backend interface, tcg_out_sti, which may store the constant
(and is allowed to fail). Rearrange the temp_* helpers so that we only
attempt to directly store a constant when the temp is becoming dead/free.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'tcg/s390')
| -rw-r--r-- | tcg/s390/tcg-target.inc.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/tcg/s390/tcg-target.inc.c b/tcg/s390/tcg-target.inc.c index e0a60e618c..314c1834aa 100644 --- a/tcg/s390/tcg-target.inc.c +++ b/tcg/s390/tcg-target.inc.c @@ -798,6 +798,12 @@ static inline void tcg_out_st(TCGContext *s, TCGType type, TCGReg data, } } +static inline bool tcg_out_sti(TCGContext *s, TCGType type, TCGArg val, + TCGReg base, intptr_t ofs) +{ + return false; +} + /* load data from an absolute host address */ static void tcg_out_ld_abs(TCGContext *s, TCGType type, TCGReg dest, void *abs) { |