gcc on IA64 platform

Hello, I am a computer science student and currently I am preparing my master degree final work on "Compiler optimization on IA64 platforms". So could you provide some information to me what is the the current situation with gcc and IA64 platfrom - I mean what are open optimization issues and so o

Do we really need Y2/TARGET_SSE2 on V16QI/V8HI/V2DF/V2DI?

i386.h has #define VALID_SSE2_REG_MODE(MODE) \ ((MODE) == V16QImode || (MODE) == V8HImode || (MODE) == V2DFmode \ || (MODE) == V2DImode || (MODE) == DFmode) #define VALID_SSE_REG_MODE(MODE) \ ((MODE) == TImode || (MODE) == V4SFmode || (MODE) == V4SImode \ || (MODE) == SFmode || (MODE) =

a compiler internal error when porting gcc

Hello, All Now when porting gcc I met a problem, which can cause compiler internal error in emit_move_insn function when I use structure pointer to assign a value to structure member like below: typedef struct MV { int m_I; short m_J; }MV; void main(void) { MV mv1; MV* pmv = &mv1;

Whats going on with the conversion warning?

I came across this odd issue with testsuite test Wconversion-5.c and AVR target. I should get warning going from a unsigned value that is wider than signed result. As I am not skilled in the art of the all conversions rules. I would appreciate some guidance before I report this as bug. FYI

Re: splitting const_int's

Richard Sandiford wrote: > "Omar Torres" <[EMAIL PROTECTED]> writes: > More importantly: > >>operands[4] = simplify_gen_subreg(QImode,operands[1],HImode,0); >>operands[5] = simplify_gen_subreg(QImode,operands[1],HImode,1); > > ..this code is designed to handle REGs and CONST_INTs co

Re: splitting const_int's

Richard Sandiford wrote: > > You might as well make the first operand a register_operand and > avoid the REG_P check. I agree. I implemented this change and it works as expected. >More importantly: > >>operands[4] = simplify_gen_subreg(QImode,operands[1],HImode,0); >>operands[5]

Re: splitting const_int's

Just a few suggestions for simplfying this... "Omar Torres" <[EMAIL PROTECTED]> writes: > (define_split >[(set (match_operand:HI 0 "nonimmediate_operand" "") > (match_operand:HI 1 "general_operand" ""))] >"reload_completed > && REG_P (operands[0])" You might as well make

gcc-4.1-20080519 is now available

Snapshot gcc-4.1-20080519 is now available on ftp://gcc.gnu.org/pub/gcc/snapshots/4.1-20080519/ and on various mirrors, see http://gcc.gnu.org/mirrors.html for details. This snapshot has been generated from the GCC 4.1 SVN branch with the following options: svn://gcc.gnu.org/svn/gcc/branches

Re: splitting const_int's

> Any suggestions on how to fix this issue? gen_int_mode -- Eric Botcazou

Re: splitting const_int's

Just correcting a typo... Omar Torres wrote: > I split it into: (set (reg:QI 1 %r3) (const_int 127 [0x7f]) (set (reg:QI 2 %r2) (const_int 255 [0xFF])

splitting const_int's

Hi All, Since the architecture I am working with only support byte size moves, I created a define_split break HI-move insn's into two QI-moves. For example, the following insn: (insn 84 5 9 (set (reg:HI 1 %r3) (const_int 32767 [0x7fff])) 3 {*movhi} (nil) (nil)) I split it into: (

Re: GCC 4.2.4 Status Report (2008-05-19)

On Mon, May 19, 2008 at 08:45:32PM +, Joseph S. Myers wrote: > Status > == > > GCC 4.2.4 is now available to download from gcc.gnu.org and > ftp.gnu.org, and the 4.2 branch is open for commits under the normal > release branch rules. The announcement of the 4.2.4 release will go > out in

GCC 4.2.4 Status Report (2008-05-19)

Status == GCC 4.2.4 is now available to download from gcc.gnu.org and ftp.gnu.org, and the 4.2 branch is open for commits under the normal release branch rules. The announcement of the 4.2.4 release will go out in a few days' time after mirrors have had time to update. There are no current p

Re: Supporting an instruction in the back-end - II

On Wed, May 14, 2008 at 10:18:56AM +0530, Mohamed Shafi wrote: > Hello all, > > Will it be possible to write a pattern in the md file to support > setting/clearing a bit of a particular register? > The instructions are as follows: > > clrb Rx, bitNo > setb Rx, bitNo > > Could you point me to the

GCC Compile Farm News: two new bi-quad core machines available

Hi, The GCC Compile Farm project is pleased to announce that two bi-quad core machines with the latest Opteron 8354 "Barcelona B3" processor and 16GB of RAM donated by AMD are now available online in datacenter space kindly donated by INRIA Saclay. All in all, gcc11 to gcc17 provide 38 64-bits c

Re: GCC 4.3.1 Status Report (2008-05-19)

Hello! GCC 4.3.1 is still not ready for release as the x86 direction flag issue (36079) needs to be resolved. We have reached consensus to add a new flag -mcld to allow to work around the kernel bug and to add a configure option to enable/disable this by default. The patch from Uros is impleme

GCC 4.3.1 Status Report (2008-05-19)

Status == The GCC 4.3 branch is open for commits under normal release branch rules. GCC 4.3.1 is still not ready for release as the x86 direction flag issue (36079) needs to be resolved. We have reached consensus to add a new flag -mcld to allow to work around the kernel bug and to add a co

Re: [RFC] Adjust output for strings in tree-pretty-print.c

FX wrote: I think the best thing to do is to have a langhook then. It seems a bit weird to have a langhook for a one-character difference, but if there's a consensus on it, I'll go along. To me too, but I still maintain that it's better to print in UTF-8 (which would make the langhook more u

Re: [RFC] Adjust output for strings in tree-pretty-print.c

> I think the best thing to do is to have a langhook then. It seems a bit weird to have a langhook for a one-character difference, but if there's a consensus on it, I'll go along. > Endianness issues may also appear. Maybe you should call iconv in the > langhook to get back to UTF-8, and print t

Re: [RFC] Adjust output for strings in tree-pretty-print.c

Notice the added final '\0' in the C case; I don't know if it's bad to have it there, but I don't see a way to not output it and still have the correct output for Fortran (whose strings are not NUL-terminated). I think the best thing to do is to have a langhook then. I'm actually not sure th

Re: [RFC] Adjust output for strings in tree-pretty-print.c

> Yes, it is bad to have it there for C/C++, please make sure the final > \0 isn't printed. The question is: how? If we limit the tree dumps to C/C++ semantics, then there's no way they can express Fortran code (ie a string litteral not terminated by a NUL), is there? Or do we make the semantics o

Re: [RFC] Adjust output for strings in tree-pretty-print.c

On Mon, May 19, 2008 at 02:59:16PM +0100, FX wrote: > return (unsigned char *) "look\0here\0"; > > > Notice the added final '\0' in the C case; I don't know if it's bad to > have it there, but I don't see a way to not output it and still have > the correct output for Fortran (whose strings are

Re: [RFC] Adjust output for strings in tree-pretty-print.c

Hi there, On Mon, 19 May 2008, 15:59:16 +0200, FX wrote: > [...] > Any comments? Is it OK to commit as is? this may sound like nit-picking, but the length of a string cannot be negative, so, I'd rather make the new parameter `len' an "unsigned int" or even size_t. HTH, cheers. l8er manfred

Re: gmon.out creation procedure

2008/5/19 <[EMAIL PROTECTED]>: > Hi, > > I am Raja, I need a favor on understand how the gmon.out file is created. > Please help me. > > 1. gmon.c is available in both gcc and glibc. Which is the one used to > create gmon.out ? I don't think gcc has gmon.c. Only glibc has it. You can also find g

[RFC] Adjust output for strings in tree-pretty-print.c

Hi all, The Fortran front-end now handles wide character strings (UCS-4/UTF-32); for these, the string literals are emitted as strings with the type of an array of unsigned 32-bit integers. The issue is that tree-pretty-print.c, in pretty_print_string() assumes strings are composed of chars and NU

gmon.out creation procedure

Hi, I am Raja, I need a favor on understand how the gmon.out file is created. Please help me. 1. gmon.c is available in both gcc and glibc. Which is the one used to create gmon.out ? 2. Can you brief how profile information required to create gmon.out is captured?¡¡Which are the functions are r

Re: Thread local storage on powerpc-darwin

On Mon, May 19, 2008 at 4:24 AM, Steven Bosscher <[EMAIL PROTECTED]> wrote: > Can anyone give me a pointer to how TLS is supposed to work on powerpc-darwin? It is non existent so it works via the emulation layer which Richard Henderson added. -- Pinski

Thread local storage on powerpc-darwin

Hi, Can anyone give me a pointer to how TLS is supposed to work on powerpc-darwin? I can't find any references, and I am trying to figure out whether I need to do something special for it when I change the rs6000 backend TLS support (e.g. should I expect any target to maybe require branch islands

Re: How to handle loop iterator variable?

Hi, My function is working properly for the below case - for (i = 1; i < N ; i++) { a[i] = 1; } for (i = 1; i < N ; i++) { j = a[i]; } But I am required to add additional phi node for j in the following case - for (i = 1; i < N ; i++) { a[i] = 1; }