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author | Mike Pall <mike> | 2012-04-11 16:22:05 +0200 |
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committer | Mike Pall <mike> | 2012-04-11 16:22:05 +0200 |
commit | 3ed5172fe49ab9cd08e803c3bec1fc29492e24fe (patch) | |
tree | d2ece70de48960d7f9b6c2f1e9be02959211b7bc | |
parent | 39112fd6fb219ba3164bb26ae7b823d6cff5ac20 (diff) | |
download | luajit2-3ed5172fe49ab9cd08e803c3bec1fc29492e24fe.tar.gz |
Fix DSE of USTORE. Have to remove OBAR, too.
-rw-r--r-- | src/lj_opt_mem.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/lj_opt_mem.c b/src/lj_opt_mem.c index d64d2e6e..17e29569 100644 --- a/src/lj_opt_mem.c +++ b/src/lj_opt_mem.c @@ -422,6 +422,19 @@ TRef LJ_FASTCALL lj_opt_dse_ustore(jit_State *J) store->t.irt = IRT_NIL; store->op1 = store->op2 = 0; store->prev = 0; + if (ref+1 < J->cur.nins && + store[1].o == IR_OBAR && store[1].op1 == xref) { + IRRef1 *bp = &J->chain[IR_OBAR]; + IRIns *obar; + for (obar = IR(*bp); *bp > ref+1; obar = IR(*bp)) + bp = &obar->prev; + /* Remove OBAR, too. */ + *bp = obar->prev; + obar->o = IR_NOP; + obar->t.irt = IRT_NIL; + obar->op1 = obar->op2 = 0; + obar->prev = 0; + } /* Now emit the new store instead. */ } goto doemit; |