I just finish porting gcc to our new architecture: S+core
Both gcc g++ libstdc++ are successfully build.
But I have problem in testing, though I've pass lot's of
informal C test patterns which my partner scratched from the internet.
The GCC testing framework is so complicated to
I'm porting a back-end for gcc.
My back-end crached in the compile test pattern 990203-1.c, and
the error message is
main.c:7: internal compiler error: in purge_addressof, at
function.c:3423
for (insn = insns; insn; insn = NEXT_INSN (insn))
if (INSN_P (insn))
{
if (!
You are cool, now I found a
(set (reg:CC_Z 33 cc)
(compare:CC_Z (zero_extend:SI (subreg:QI (reg/v:SI 166 [ a ]) 0))
(const_int 0 [0x0])))
It's what I'm looking for.
Thank you so much.
Thank you for so much help.
Now I can successfully combine a arith instrucion compare.
But another problem occurs, that is our RISC machine has
logical instructions which only update the Zero flag.
Thus only eq neq branch can be combined with.
For example
case 1 (can combine)
or_c
I'm writing a gcc back-end for a new RISC.
This RISC has two kinds of add instructions,
one updates condition register and one doesn't.
ex.
1.)
add - add
comp- update condition register
2.)
add_c - add update condition register
But case 2 pattern is not used at all.
Hello~ every one :)
I'm a new guy in gcc mailing list
I've been studying gcc for 2 months.
I read GNU compiler collection internals (for GCC 3.5.0?),
and I also trace the source code for target-mips.
My problem is there are so much symbol/function/API in gcc.
Some are documentated in the book
I'm trying to trace the source code of gcc/mips.
It uses a SYMBOL_REF_SMALL_P macro,
According to the index of 'GNU Compiler Collection Internals',
it should be documented on section RTL representation-Access to Special
Operands but it's not.
How can I find it's document?
My english is very
