Hi,
I'm working on compiler for an architecture with a multiply instruction that
takes two 32-bit factors, sign-extends both factors to 64-bits and then does a
64-bit multiplication and stores the result to a destination register. The
combine pass successfully generates the pattern (mulhizi3) f
Hi,
I'm trying to utilize the clz pattern:
(define_insn "clzhi2"
[(set (match_operand:HI 0 "register_operand" "=r")
(clz:HI (match_operand:HI 1 "register_operand" "r")))]
""
"cntlz %0 %1")
I can build a compiler successfully with this pattern, but I
can't find any C source
Hi,
I'm trying to improve the asm code generated for C code like:
long f(long a, long b) {
_int64 s;
s = (((long long) a) + ((long long) b));
s = (s > 0x7fffL ? (long) 0x7fffL :
(s <-0x8000L ? (long)-0x8000L :
s));
return(
Hi,
I've encountered a performance issue in a port of GCC I'm working on,
where the behavior of LIM is affected by the ordering of fields in a
structure. I've been able to re-create it with a GCC 4.3.1
Linux X86 compiler. With GCC 4.3.1 Linux X86, when I compile:
struct foo {
int *p
