porting gcc can't compile libgcc2.c

Hello, Here is a question about porting gcc. After I modified machine.md and other backend files, I can make cc1 and xgcc now. But libgcc2.o still failed. I'd like to know does we must make libgcc2.o since the target machine don't have float registers and 64bit registers. Thanks a lot. Eric

glibc or newlib for mips-elf?

hi, Would you tell me which I should select to port for the new target? The new target is like mips-elf. But I was told that glibc doesn't support mips-elf well. Is it right? Thanks for your help. Eric

glibc or newlib for mips-elf?

Thanks for your suggestion. I think I need to port glibc. Because the new board is going to run linux kernel. But I'm still not sure if glibc will support the new target well. Thanks. Eric

glibc or newlib for mips-elf?

>If you are running the Linux kernel, then your target is not mips-elf, >but rather mips-linux-gnu. For that target, glibc or uclibc is >appropriate. Exactly to say, the target is neither mips-elf nor mips-linux-gnu. I just use mips-elf as the start. It's a new target with little endian and own

Re: glibc or newlib for mips-elf?

> For a port then yes *-elf is easier to start, especially if you're > planning on going for an elf based operating system. > > What about the mips port made you decide that you wanted to use that > as a guideline? > > -eric Firstly, there're some similar between them. Secondly, we're some fami

a question about floating point register

Hello, Can anyone give me some suggestions about floating point implemention. My new target doesn't have floating point register. But must I implement the floating point operantion? Libgcc always fails on _floatdifi.o. But how can I implement them? Thanks a lot! Eric.

a question about floating point register

Thank you very much for the suggestion. But are there any more details about them and libgcc. I read the internals but find few information. I will be very appreciated. Best Regards. Eric

software floating point & machine descriptions

Hi, gcc I have to send the new mail again for the software floating point problem. I need more details about it. 1) If I use software floating point, does I need implement float mode insns in md file? Such as movsf, movdf. 2)How to generate correct object files of libgcc2 of floating point operat

where is the floatsidf?

Hi, Still software floating point. :< Thanks for the help. Now I use soft-float to build libgcc, but _floatdidf.o fails for Cannot branch to undefined symbol, __floatsidf. Should I define floatsidf in md file? But I have no floating point registers. Regards. Eric

where is the floatsidf?

Thank you very much about the help. Acctually, I have included fp-bit.c in libgcc.mk. But the order is not right, I think. Because _si_to_df.o is after the _floatdidf.o. Also, how to change _si_to_df.o to _floatsidf.o? In md file? I'm wondering that maybe I needn't to implement libgcc2.a, but that

lib2funcs and fpbit both rely on each other

Hello, When building Libgcc with new porting gcc, _floatdidf.o failed for undefined symbol _floatsidf. I've been told that _floatsidf is in fpbit.c as _si_to_df.o. Then I modified the libgcc.mk and firstly build fpbit. But _pack_df.o failed for undefined symbol _ashldi3.o which is in libgcc2.c. It

Re: lib2funcs and fpbit both rely on each other

2005/9/15, Paul Brook <[EMAIL PROTECTED]>: > On Thursday 15 September 2005 10:59, Eric Fisher wrote: > > Hello, > > > > When building Libgcc with new porting gcc, _floatdidf.o failed for > > undefined symbol > > _floatsidf. I've been told that _floats

unwind-dw2-fde.c failed on my port

Hello, It's my new port of gcc. Libgcc is almost compiled for now, except unwind-dw2-fde.c. The error information is '../../gcc-3.4.4/gcc/unwind-dw2-fde.c:968: internal compiler error: in insert_save, at caller-save.c:728 Please submit a full bug report' Of course, there are some thing wrong abo

unwind-dw2-fde.c failed on my port

Hi, There is a little progress. I find it's concerned with gcc optimize. When I change the option -O2 to -O0, it passes the make. Of course, I'd like to say there are something wrong in my backend. But, can somebody give me any clue? Thanks. Eric

fixed registers in mips

Hello, I'd like to ask a question about target macros of registers. In mips.h, the fixed registers are defined as follows: /* By default, fix the kernel registers ($26 and $27), the global pointer ($28) and the stack pointer ($29). This can change depending on the command-line options.

Questions about comparison insns in mips.md

Hello, Who can explains for me about the comparison insns in mips.md. One question, why there is only define_expand patterns but no define_insn. Supposed that I have a comparison instruction say 'cmp %1, %2', should I implement define_insn patterns for comparison insns? Here is a pattern fr

Re: Questions about comparison insns in mips.md

08 Oct 2005 10:40:40 -0700, Ian Lance Taylor : > Eric Fisher <[EMAIL PROTECTED]> writes: > > > Who can explains for me about the comparison insns in mips.md. > > Look at the documentation for the bCOND instruction patterns. > > > One question, why there i

Linker error about relocation

Hello, Sorry, maybe it's not appropriate to put this question here. But I need help. Porting gcc involves the relocation and BFD porting. I've added some relocate type. But after linked, the address is not correct. Are there any documents about the relocation. And what should I do? Thanks. Eric

A question about RTL output

Hello, This is a strange problem. Why an operantion that should be a 'xorsi3' format, yet it comes out with a 'scond' format. I have defined 'xorsi3' indeed. When I use the encluesive operantion '^', it is ok to emit 'xorsi3'. When I compile the libgcc, it is not ok in _pack_df.o. So what's the pro

A question about RTL output

>Probably because it was optimized. If you want a better answer, you >have to give us more info about what happened, such as a C testcase, and >RTL dumps. But it is probably better if you look at this yourself. >Generate debugging dumps, -da -fdump-tree-all, and then start looking. >Presumably an

A question about RTL output

>It shouldn't. What is the actual error message? > >Ian Such as follows, dp-bit.c: In function `__pack_d': dp-bit.c:435: error: unrecognizable insn: (insn 33 32 34 0 dp-bit.c:167 (set (reg:SI 159) (ltu:SI (reg:SI 158 [ .class ]) (const_int 2 [0x2]))) -1 (insn_list 32 (nil))

A question about define_insn and force-reg

Hello, gcc I think it's very interesting. I want to split a insn of loading SF data through SI symbol, such as (set (reg:SF 5 $5) (mem/u/f:SF (symbol_ref/u:SI ("*$LC0". I want to it firstly load the address into a register, then load the data through the register. So I define the insn as follo

A question about define_insn and force-reg

>> (define_insn "loadsf" >> [(set (match_operand:SF 0 "register_operand" "=r") >>(mem:SF (match_operand:SI 1 "immediate_operand" "m")))] >This makes no sense, because the constraint means that the mem's operand is >an immediate before reload (and you want it to be a register), and a mem

Emit insns in the preparation statements of define_expand

Hello, I have a doubt here about define_expand and would be appreciated for your any help. The internals say, Usually these statements prepare temporary registers for use as internal operands in the RTL template, but they can also generate RTL insns directly by calling routines such as emit_insn,

Emit insns in the preparation statements of define_expand

Hey, It's very sorry. I have just found the answer just in the context. It's a so stupid question. DONE Use the DONE macro to end RTL generation for the pattern. The only RTL insns resulting from the pattern on this occasion will be those already emitted by explicit calls to emit_insn within the

A question about unable to generate reloads

Hello, Such a problem is difficult to find the reason. But can you give some suggestion about the possible matter? This is the information on my port. Thanks a lot. dp-bit.c: In function `__muldf3': dp-bit.c:957: error: unable to generate reloads for: (insn 416 415 417 20 dp-bit.c:874 (set (reg:SI

A question about memcpy

Hi, When I compile such c codes as following, int a=0x,i; int sra[32]={0x,0x,0x,0x,0x,0x,0x,0x, 0x,0x,0x,0x,0x,0x,0x,0x, 0xf

Questions about long long type

Hello, I have two questions about long long type. Firstly, shall I support it in the machine.md file, or just leave it to libgcc? Dose the libgcc support it if I don't implement in the machine.md file? Secondly, is the long long type equal to DImode in the 32bit machine? Such as adddi3, subdi3. T

A question about the global variables initialization.

Hello, For such a program, int a=0; int main(void) { ... } We will see the compiler put the variable 'a' into the bss section. That means that 'a' is a non-initialized variable. I don't know if this is the gcc's strategy. Happy Christmas. Eric.

A question about the global variables initialization.

>Yes for zero'd initialized variables, GCC puts them into BSS to say >space in the executable. Thanks. But, you say 'to say space in the executable'. I'm not clear what does it mean. Eric.

A question about the global variables initialization.

Hi, I guess it's about the gcc version. Gcc 3.4.4 does put the zero'd variables into bss section. But I'd like to know if the older one does it too. Say 2.95.2 19991024 (release)? Thanks again. Eric.

Gcc Register Allocation

Hello, There are some papers talking about the gcc register allocation in the summit proceedings. I'd like to know wether the graph coloring allocator has been used in the gcc-3.4.4. Also, where can I find some reference of the gcc register allocation, besides the source codes and summit proceeding

test for excess errors

Hi, Could you tell me what it means for 'test for excess errors'? I run make check-gcc RUNTESTFLAGS='dg.exp' on my machine, and got many failed tests for these errors on my porting gcc. Do I need to setup something in order to run these testsuites for my port? Besides DejaGnu and Tcl. Thanks. Eri

Question about implicit memset invocation

Hello, I'd like to know since gcc implicitly call memset function to perform optimization and my c libraries are unusable for now. Can I take another way? Say don't call memset. How to do that? Yours, Eric.

Question about the internal compiler error in verify_local_live_at_start

Hello, When I run the test suite for my port of gcc, there are some failures caused by the optimization flag such as -O2/-O3, and the messages are like, 930120-1.c: In function `f': 930120-1.c:138: internal compiler error: in verify_local_live_at_start, at flow. c:546 It seems that because of th

help with the conception of floating point

Hi, I'm looking at the fp-bit.h, fp-bit.c, and try to understand the floating point operation simulation. But there are many proper noun hard to get the conception. Such as NGARDS IMPLICIT_1 Are there any details or documents about these? Thanks Eric.

Is GDE available for now?

Hi, I read the paper "The Visual Development of GCC Plug-ins with GDE" from gcc summit 2009. It's a powerful tool. So where can I get it to help me debug and study gcc? Thanks a lot. Eric

implement tree_peeling_loop

Hi, Is it useful to implement a high-level universal function tree_peeling_loop in tree-ssa-loop-manip.c? I want call it in tree-ssa-loop-prefetch.c. If yes, can anyone give me some clues? I find currently, vect_do_peeling_for_loop_bound is doing a similar work in tree-vect-transform.c. Regards,

Help on loop peeling

Hi, I'm implementing a loop peeling function used in tree-ssa-loop-prefetch.c according to the following comment, /* Step 5: unroll the loop. TODO -- peeling of first and last few iterations so that we do not issue superfluous prefetches. */ I take the functions slpeel_* in tree-vercteriz

Re: Help on loop peeling

2009/8/13 Sebastian Pop : > Could you please send the patch you are working on, together with > a reduced testcase?  This could help to reproduce the error. Thanks. I put the patch and a test below. The patch is based on 4.4.0. It's just a toy, I haven't a nice design for now. Actually, first_n

Re: Help on loop peeling

2009/8/15 Sebastian Pop : > You should put a TODO_update_ssa in the flags of prefetching pass. > With the attached patch I don't see an error. Thanks. Finally, I figure out that it's because that after copying the loop, I should have created a preheader to ensure that new_loop's preheader has onl

Please recommend a good vcg viewer

Hello, I currently use aiSee (demo version) to view vcg dump of gcc. One problem is that the tool works too slowly. The another problem is that graph looks ugly, especially when unforlding a big cfg. Who can recommend me a good vcg viewer? Thanks. Best Regards, Eric

Should warning of -Wunreachable-code be generated when optimization is taken?

Hi, I run into such an XPASS for trunck. And it seems an old problem. XPASS: gcc.dg/Wunreachable-8.c (test for bogus messages, line 7) /* { dg-do compile } */ /* { dg-options "-O2 -Wunreachable-code" } */ float Factorial(float X) { float val = 1.0; int k,j; for (k=1; k < 5; k++) /* { dg-b

threading jumps makes niter changed from INTEGER_CST to chrec_dont_know

Hi, I found that sometimes -fno-tree-dominator-opts will bring a big speed promotion. This is because that pass_dominator tries to thread jumps. But sometimes this will cause that the loop's exit bb does not dominator its latch bb again. Then pass_complete_unroll is unable to know the exact number

Re: threading jumps makes niter changed from INTEGER_CST to chrec_dont_know

2010/1/6 Jeff Law : > Please file a bug report with a complete testcase so that we can see what's > happening rather than trying to speculate. > > jeff > Uh, seems this problem doesn't occur on trunk. Because before pass_dominator, pass_complete_unrolli is able to unroll the following test case.

a gcc plugin to show cfg graphically when debug gcc

Hi, I just wrote a little gcc plugin, which can be used to show GIMPLE cfg graphically when debug gcc. Currently, it's still a very initial version. It, * transfers tree dump into vcg file, * then invokes vcgview (or aisee etc.) to show the graph. I would like to improve it to support both tr

[MIPS]question about floating point conditional branch

s the reservation for all 'branch' insns? Is it OK? Eric Fisher 2008-11-3

Re: A happy problem caused by loongson2f's div.g instruction

> So I think one of the possible solution would be to reverse the div.g and teq > insn. > And I think this is not hard to do, just modify mips_output_division() > function. > Also I think this is a better solution, since we can save a register. Do you mean the modification like this? + + +/* Us

apply maintainer?

Hello, Anyone could tell how to be a gcc maintainer? Is there any requirement? Actually, my previous work are all not based on the gcc trunk. So no patch submitted. Anyway, it's cool to contribute :-) Thanks. Eric Fisher 2008-11-11

Re: apply maintainer?

Ah, maybe I should say contributor. Best regards, Eric 2008/11/12 Manuel López-Ibáñez <[EMAIL PROTECTED]>: > 2008/11/11 Eric Fisher <[EMAIL PROTECTED]>: >> Hello, >> >> Anyone could tell how to be a gcc maintainer? Is there any >> requirement? Actually, my

Re: change to gcc from lcc

Interesting. At least. There should be a warning from gcc. Eric 2008/11/14 Tim München <[EMAIL PROTECTED]>: > On Friday 14 November 2008 10:09:22 Anna Sidera wrote: >> Hello, >> >> The following code works in lcc in windows but it does not work in gcc in >> unix. I think it is memory problem. In

questions about "find_if_case"

Hi, For if-conversion pass (pass_if_after_combine), we can see there're some IF-THEN-ELSE cases which we try to transform. Let's say find_if_case_1, for an example. (1) if (test) goto over; // x not live x = a; goto label; over: becomes x = a;

Re: questions about "find_if_case"

> It avoids a branch instruction. For the first case, the path via "x = > a" is "test -> jump -> set -> jump" (where "set" is th "x = > a"-instruction). This becomes "set -> test -> jump". So one jump > less. Thank you very much for the detailed explanation. However, I have a doubt here. IMO, t

improve -fverbose-asm option

e, will output samples based on the labels. So this will help us to analyze the samples for each basic block. But current generated code will have many local labels with the same name. Perhaps it's again the -fverbose-asm to enable this functionality. But where should I go if I wanna implement this functionality? Cheers, Eric Fisher Mar 16, 2009

Re: improve -fverbose-asm option

INTERNAL_LABEL in the back-end. But there's also a problem which is that the user need to consider the length of the function name and length of the label string buff. Best regards, Eric Fisher Mar 17, 2009

a mistake in gccint doc

s completely modified with the contents of variable @code{b}. Real definition are also known as @dfn{killing definitions}. Similarly, the use of @code{b} reads all its bits. " Eric Fisher May 15, 2009

Re: a mistake in gccint doc

2009/5/16 Diego Novillo : > On Fri, May 15, 2009 at 02:12, Eric Fisher wrote: > >> I think it's a mistake between a and b. It should be, >> >> " >> variable @code{a} is completely modified with the contents of >> variable @code{b}.  Real definition

[lto] LDFLAGS get lost in stage2

d path But, lto-plugin is failed in stage2 with the error /usr/bin/ld: cannot find -lelf I look into the Makefile and find that LDFLAGS is set as BOOT_LDFLAGS scine stage2, so I have to set this variable also. Is it a right way that it should go? Best wishes, Eric Fisher

Do we have optimizations to reduce cache miss?

Hi, I just want to ask whether we have any special pass to reduce cache miss? Or any idea or branch to enhance it. Thanks Eric Fisher

Any comment about the replacement of gcc news?

Hello Sorry, I hope it's not an offensive or boring topic. Some of my friends asked me if it's true that gcc will be replaced by other compilers on a few OS and what is the problem. Any comment? Best wishes Eric Fisher

Re: Tree Browser

Hi, Try using gcc-vcg-plugin to browse tree and cfg during debug gcc. It's just an initial version for now. Any suggestions will be appreciated. :-) http://code.google.com/p/gcc-vcg-plugin/ Thanks, Eric Fisher

[vect, gccint] Mistake about Vector-specific attributes?

Hi, In gccint, 7.2.3.3 Vector-specific attributes, there are two items talking about vect_int_mult: vect_int_mult Target supports a vector widening multiplication of short operands into an int result, or supports promotion (unpacking) from short to int and a non-widening multiplication of int

Ask for copyright assignment forms for gcc

Hello, It will be appreciated if anyone could help send me the copyright assignment forms. I need them to submit patches to gcc. I think it should be an assignment for all future changes. Thanks Eric

help with the conception of floating point

I guess that the macro NGARDS is relevant to the guard digit. But I still failed to have a clear conception about what it means. Others are easy to know by IEEE 754 and "What Every Computer Scientist Should Know about Floating-Point Arithmetic". Except, define NGARDS 8L define GARDROUND 0x7f defin

cannot find -lm

Hi, When I run the test suite on my port, there are many many failures with the error like this, ld: cannot find -lm collect2: ld returned 1 exit status I'm not sure whether it is the libm(math library), or it is of glibc. But I guess it is a builtin library of gcc and has nothing to do with math

cannot find -lm

Why so many tests need libm? I don't think the tests really used the functions of libm. Can I port glibc to get it? Eirc

precompiled headers tests failed

Hi, I'm wondering whether the precompiled headers tests are ok for mips-elf-gcc 3.4.4 on cygwin. When I run the testsuite for mips-elf-gcc on cygwin using such command, make check-gcc RUNTESTFLAGS="pch.exp" The errors are like these following. It seems that there is no common-1.h at all. In addat

precompiled headers tests failed

Hi, I think I've got the answer from GCC Bugzilla Bug 11341. It said that this was possibly a known problem with cygwin. For some reason cygwin has always had problems with PCH. Then I run the testsuite on the linux and most of them passed. Thanks for your time. Eric.

re: precompiled headers tests failed

But there are still some failures. I'm not sure if they are okey. The error messages are like these, Executing on host: /home/smj/build_gcc_mips/gcc/xgcc -B/home/smj/build_gcc_mips/gcc/ /home/smj/gcc-3.4.4-mips/gcc/testsuite/gcc.dg/pch/static-1.c -O0 -I. -S -o static-1.s(timeout = 300) PAS

re: precompiled headers tests failed

But there are still some failures. I'm not sure if they are okey. The error messages are like these, Executing on host: /home/smj/build_gcc_mips/gcc/xgcc -B/home/smj/build_gcc_mips/gcc/ /home/smj/gcc-3.4.4-mips/gcc/testsuite/gcc.dg/pch/static-1.c -O0 -I. -S -o static-1.s(timeout = 300) PASS

How to create libgcc_eh.a for mips-elf-gcc?

Hi, I will be appreciated for anyone tell me how to create libgcc_eh.a for mips-elf-gcc. I used this configuration, but failed ../gcc-3.4.4/configure --target=mips-elf --enable-languages=c --enable-shared Yet libgcc_eh.a can be created for local i686 gcc, when use this, ../gcc-3.4.4/configure --en

a question about pc-relative branch and function call

Hi, Happy Valentine's Day. Suppose I have only pc-relative branch instructions such as 'b offset' and don't have pc-region branch instructions such as 'j target'. So what the function call should be translated? Do I have to always use two instructions such as 'la reg, func' and 'b reg'? Especially

Re: a question about pc-relative branch and function call

: > On Feb 13, 2006, at 7:28 PM, Eric Fisher wrote: > > Suppose I have only pc-relative branch instructions such as 'b offset' > > > > and don't have pc-region branch instructions such as 'j target'. So > > what the function call should be transla

Re: a question about pc-relative branch and function call

r to hold the function address anyway. Whatever we do with gcc backend or as/ld. I see. Thanks Eric 2006/2/14, Mike Stump <[EMAIL PROTECTED]>: > On Feb 13, 2006, at 8:31 PM, Eric Fisher wrote: > > Thanks. I'm working to port gcc to our chip. I use mips-elf as the > > sta

What is the MIPS Constraints 'c' and 'j'

Hi, While I read the mips.md, I find there are some constraints used in function call templates, such as 'c' and 'j'. But these two constraints seem not be defined and I can't find their explanation both in source files and gcc internal. Well, aren't there anywhere I missed? Otherwise, how can they

another question about branch island

Hi, Thanks for giving directions. I've read the codes about this and got some conception. But I possibly made a mistake, I think. For the linker, ppc64elf.em and elf64-ppc.c have the solution. For the gcc, rs6000.c also has the solution. There is a mail, [tree-ssa] -longcall branch islands for Darw

question about pic and relocation

Hi, Given such a source file, /*fun.c*/ int b=2; void fun(void) { int a=b; } Then compile it, $ mips-elf-gcc -shared -fpic fun.c -o fun.so -save-temps We can see this below from fun.s, lw $2,%gp_rel(b)($28) I think symble 'b' should be of GOT relocation. But it isn't. $ mips-elf-readelf

Re: question about pic and relocation

: nop 5ffe0694: 1047beqzv0,5ffe06b4 Why? And the symble 'b' is of absolute type(*A*)? 2006/2/23, Daniel Jacobowitz <[EMAIL PROTECTED]>: > On Thu, Feb 23, 2006 at 01:33:05PM +0800, Eric Fisher wrote: > > $ mips-elf-gcc -shared -fpic f

confused by mips target

Hi, I'm really confused by mips targets, such as mips-elf, mips-linux, mips-elf-linux, mips-elf-linux-gnu. I will appreciate if anyone can tell me the difference between them. Thanks. Eric.

can't create crtbegin.o: Invalid bfd target

Hello, My port is originally aimed for mytarget-elf and has been able to built to use. Now I want to use another target, mytarget-linux, just like mips-elf and mips-linux. Binutils is ok and has been installed, but when build gcc, there is such a error, /home/smj/build_gcc_linux/gcc/xgcc -B/home/s

question about default options of mips

Hi, I installed cross gcc3.4.4 on my linux/pc server with --target=mips-elf. When I use mips-linux-gcc to compile a c file, the assembly code will have psuedo-op used for system v.4 (e.g. .cpload). And the object file is of big endian. So I have to use flag -mno-abicalls and -EL every time. Are the

Re: question about default options of mips

But, they told me that mips-elf is for 'no-opsys' target, and does't support glibc. So if I want to use gcc for operantion system and glibc, should I use mipsel-linux? Thanks 27 Feb 2006 22:55:48 -0800, Ian Lance Taylor : > "Eric Fisher" <[EMAIL PROTECTED]&g

Re: question about default options of mips

I think we shouldn't make abicalls as default in my opinion. :-) 2006/2/28, Eric Christopher <[EMAIL PROTECTED]>: > > On Feb 27, 2006, at 11:01 PM, Eric Fisher wrote: > > > But, they told me that mips-elf is for 'no-opsys' target, and does't >

mips-elf-linux and mips-linux-elf, another puzzler

Hi, After talking about mips-elf, mips-linux, mips-elf-linux-gnu, my friend told that there is also a target of mips-linux-elf. My God, confused. Yours, Eric.

how to run shared file on simulator

Hi, I've ported gcc to mytarget-linux version. The object file compiled now are shared one. My current simulator is able to run static executable program and just translate binary code one by one. I know shared file needs dynamic linker to load. So I'd like to know can I run shared file on my sim?

question about treelang modification and debug

hi, You know that treelang prescribes the function prototype must give the storage class type explicitly, for an example, "external_definition int add(int arg1, int arg2);" I'd like to know how to modify the parse.y to let the storage type can be implicitly and the default type is external_definiti

Question about build error

hi, When I build gcc-3.2.2 for mips target, there's an error. What's the problem? Thanks Eirc ake[1]: Leaving directory `/home/cii/qwang_gcc/libiberty' xgcc: specs file malformed after 4096 characters xgcc: specs file malformed after 4096 characters xgcc: specs file malformed after 4096 character

Re:question about treelang modification and debug

Seems the question has been solved, here is the changes of treelang/parse.y, just for fun :-) $ diff treelang/parse.y treelang/parse_new.y -u --- treelang/parse.y2004-01-08 15:50:46.0 +0800 +++ treelang/parse_new.y2006-04-13 18:00:34.390625000 +0800 @@ -48,6 +48,7 @@ #include

can we define a comment?

hi, Anybody knows that if we can define a comment? For a statement such as, COMMENT this is a comment. will be preprocessed as, // this is a comment. or something valid and transparent to the compiler? Of cause we can't directly use, #define COMMENT // Thanks. Eric.

localization for Chinese language.

hi, Does gcc support Simple Chinese language for now? Is there anyone working on this? Thanks.

a problem when building gcc3.2.1

hi, I configure GCC as follow: PATH=/gnutools/bin:$PATH ; export PATH mkdir -p /tmp/build/gcc cd /tmp/build/gcc /src/gcc-3.2.1/configure --target=mipsel-elf \ --prefix=/gnutools --enable-languages=c,c++ \ --with-gnu-as --with-gnu-ld --with-newlib \ --without-headers --disable-shared --disable-t

small changes of gdbinit.in

I guess that the argument of the user defined command in gdbinit.in should be $arg0. Also, due to the changes of the structure tree node, ptc should be, define ptc -output (enum tree_code) $.common.code +output (enum tree_code) $arg0.base.code echo \n end Here's the patch, --- gcc/gdbinit.in

why don't have 'umul' rtx code

hi I'm not clear why we have 'udiv', but don't have 'umul' for Standard Pattern Names. Does I need to define a nameless pattern for it? Thanks in advance. eric

looking for loongson support

hi Is there anyone working on the loongson support of gcc? I notice that loongson has been added into the currently developing binutils. ericfisher

Re: looking for loongson support

ot; + "nmadd.s\t%0,%1,%2" + [(set_attr "type""fmadd") + (set_attr "mode""SF")]) + +(define_insn "" + [(set (match_operand:DF 0 "register_operand" "=f") + (minus:DF (match_dup 0) + (mult:DF (match_operand:DF 1

noticed a mistake on the instruction scheduling paper

... if n > 0 || ReadyTry[0] ... here should be if n > 0 && ReadyTry[0] since 'the algorithm guarantees that the instruction with the highest priority will be issued on the current cycle).' Of course, implemented code in gcc is right :-) Eric Fisher 2008-9-9