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Remove extra conversion of shift count in ACK C.

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Given `long long o1` and `unsigned int o2`, then `o1 << o2` was
converting o2 to long long and then to int.  Remove the first
conversion and just convert o2 to int.
This commit is contained in:
George Koehler 2019-09-16 21:35:38 -04:00
parent f6a1e08218
commit 485faa2944
1 changed files with 6 additions and 2 deletions
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8
lang/cem/cemcom.ansi/arith.c
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@ -143,7 +143,11 @@ void arithbalance(register struct expr **e1p, int oper, register struct expr **e
converted to the signed type, else both operands are
converted to an unsigned type.
*/
if (t1 == LNGLNG && u1 && (t2 != LNGLNG || !u2))
if (shifting) {
/* In shifts like o1 << o2, never convert o1,
and let ch3bin() convert o2 to int.
*/
} else if (t1 == LNGLNG && u1 && (t2 != LNGLNG || !u2))
convert2 = ulnglng_type;
else if (t2 == LNGLNG && u2 && (t1 != LNGLNG || !u1))
convert1 = ulnglng_type;
@ -180,7 +184,7 @@ void arithbalance(register struct expr **e1p, int oper, register struct expr **e
else if (t2 == LONG && t1 != LONG)
convert1 = long_type;
if (convert1 && !shifting) /* ??? */
if (convert1)
t1 = int2int(e1p, convert1);
if (convert2)
t2 = int2int(e2p, convert2);