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Fix last commit.

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This commit is contained in:
Mike Pall 2012-08-15 21:08:00 +02:00
parent ff0a1f3f4e
commit 0dd175d9e7
1 changed files with 3 additions and 3 deletions
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6
src/lj_opt_fold.c
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@ -818,9 +818,9 @@ LJFOLDF(simplify_nummuldiv_k)
return RETRYFOLD; return RETRYFOLD;
} else if (fins->o == IR_DIV) { /* x / 2^k ==> x * 2^-k */ } else if (fins->o == IR_DIV) { /* x / 2^k ==> x * 2^-k */
uint64_t u = ir_knum(fright)->u64; uint64_t u = ir_knum(fright)->u64;
if ((u & U64x(000fffff,ffffffff)) == 0 && uint32_t ex = ((uint32_t)(u >> 52) & 0x7ff);
(uint32_t)(u = ((u >> 52) & 0x7ff)) - 1 < 0x7fd) { if ((u & U64x(000fffff,ffffffff)) == 0 && ex - 1 < 0x7fd) {
u = (u & (uint64_t)1 << 63) | ((uint64_t)(0x7fe - (uint32_t)u) << 52); u = (u & ((uint64_t)1 << 63)) | ((uint64_t)(0x7fe - ex) << 52);
fins->o = IR_MUL; /* Multiply by exact reciprocal. */ fins->o = IR_MUL; /* Multiply by exact reciprocal. */
fins->op2 = lj_ir_knum_u64(J, u); fins->op2 = lj_ir_knum_u64(J, u);
return RETRYFOLD; return RETRYFOLD;