Hi,
I find that in the function expand_expr_real_1(), which translates the
GIMPLE tree nodes to RTL.
There are codes to process the ARRAY_REF/ARRAY_REF_RANGE node. I wrote a
test program in C such like this,
void f(int s1[], int s2[], int s3[])
{
int j;
for (j = 0; j < 16; j++)
s3[j] = s1[j] + s2
I tried by referring the ia64.md, unfortunately it does not work. The
insn I wrote for FMAC is as follows,
(define_insn "maddsi4"
[(set (match_operand:SI 0 "register_operand" "=r")
(plus:SI (mult:SI (match_operand:SI 1 "register_operand" "r")
(match_operand:SI 2 "register_operand" "r"))
(match_ope
Hi,
Could someone give some hints of how to describe a FMAC (float mult and
add) insn in machine description, it matches d = b*c+a, which is a four
operands float instrution. With a glimp through the array optabs[] in
genopinit.c, it seems no OP handler could match FMAC operation? And I
found a fun
Hi,
Could someone give some hints of where to find the sources and
algorithms of implementing
the DFA pipeline hazard recognizer in GCC, which files and functions?
Thanks advance.
Qing
