fanqifei writes:
2010/1/18 Adam Nemet adambne...@gmail.com:
Sorry for jumping in late. See make_file_assigment in combine.c.
The problem usually is that:
(set A (ior (and B C1) OTHER))
can only be turned into a bit-insertion if A and B happen to be the same
pseudos.
Adam
2010/1/18 Adam Nemet adambne...@gmail.com:
fanqifei fanqi...@gmail.com writes:
Paolo Bonzini said that insv instruction might be synthesized
later by combine. But combine only works on at most 3 instructions and
insv is not generated in such case.
So exactly when will the insv pattern
2010/1/18 Adam Nemet adambne...@gmail.com:
Sorry for jumping in late. See make_file_assigment in combine.c.
The problem usually is that:
(set A (ior (and B C1) OTHER))
can only be turned into a bit-insertion if A and B happen to be the same
pseudos.
Adam
Thank you, Adam. The problem
On 01/18/10 03:39, fanqifei wrote:
2010/1/18 Adam Nemetadambne...@gmail.com:
Sorry for jumping in late. See make_file_assigment in combine.c.
The problem usually is that:
(set A (ior (and B C1) OTHER))
can only be turned into a bit-insertion if A and B happen to be the same
pseudos.
fanqifei fanqi...@gmail.com writes:
Paolo Bonzini said that insv instruction might be synthesized
later by combine. But combine only works on at most 3 instructions and
insv is not generated in such case.
So exactly when will the insv pattern be recognized and how does
the coding
fanqifei wrote:
2010/1/13 Bingfeng Mei b...@broadcom.com:
Your instruction is likely too specific to be picked up by GCC.
You may use an intrinisc for it.
Bingfeng
but insv is a standard pattern name.
the semantics of expression x= (x0xFF00) | ((i16)0x00FF);
is exactly what insv can
David Daney dda...@caviumnetworks.com writes:
but insv is a standard pattern name.
the semantics of expression x= (x0xFF00) | ((i16)0x00FF);
is exactly what insv can do.
I all tried mips gcc cross compiler, and ins is also not generated.
You must be doing something wrong:
$ cat
the coding style affect the insv
pattern recognization?
Hi,
I am working on a micro controller and trying to port
gcc(4.3.2) for it.
There is insv instruction in our micro controller and I have add
define_insn to machine description file.
However, the insv instruction can only
2010/1/13 Bingfeng Mei b...@broadcom.com:
Your instruction is likely too specific to be picked up by GCC.
You may use an intrinisc for it.
Bingfeng
but insv is a standard pattern name.
the semantics of expression x= (x0xFF00) | ((i16)0x00FF);
is exactly what insv can do.
I all tried
January 2010 10:26
To: Bingfeng Mei
Cc: gcc@gcc.gnu.org
Subject: Re: GCC-How does the coding style affect the insv
pattern recognization?
2010/1/13 Bingfeng Mei b...@broadcom.com:
Your instruction is likely too specific to be picked up by GCC.
You may use an intrinisc for it.
Bingfeng
2010/1/13 Bingfeng Mei b...@broadcom.com:
OOPs, I don't know that. Anyway, I won't count on GCC to
reliably pick up these complex patterns. In our port, we
implemented clz/ffs/etc as intrinsics though they are present as
standard patterns.
Bingfeng
Could you please show me the path of the
Hi,
I am working on a micro controller and trying to port gcc(4.3.2) for it.
There is insv instruction in our micro controller and I have add
define_insn to machine description file.
However, the insv instruction can only be generated when the code
is written like below. If the code
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