[Bug c++/26445] New: SSE byte-by-byte load instruction fails to compile

[Bug c++/26445] New: SSE byte-by-byte load instruction fails to compile

[gchernis11 at msn dot com]

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
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Call to the following function ...


/*inline */ void ConvertFloatSSE(void *inBuff, void *outBuff, int len)
{
   unsigned char* inByteBuffer   = reinterpret_cast<unsigned char *>(inBuff);
   float*         outFloatBuffer = reinterpret_cast<float         *>(outBuff);

   for(int i = 0; i<len/4; i++)
   {
      __m128i register1 = _mm_set_epi8(
                                       *inByteBuffer    , *(inByteBuffer+ 1),
*(inByteBuffer+ 2), 0,
                                       *(inByteBuffer+3), *(inByteBuffer+ 4),
*(inByteBuffer+ 5), 0,
                                       *(inByteBuffer+6), *(inByteBuffer+ 7),
*(inByteBuffer+ 8), 0,
                                       *(inByteBuffer+9), *(inByteBuffer+10),
*(inByteBuffer+11), 0
                                      );
      __m128i register2 = _mm_srai_epi32  (register1, 8);
      __m128  register3 = _mm_cvtepi32_ps (register2);
                      _mm_store_ps    (outFloatBuffer, register3);
      outFloatBuffer += 4;
      inByteBuffer += 12;
   }
}

generates...
************************************************************************************************************************************
if g++ -DHAVE_CONFIG_H -I. -I/home/gchernis/tryswap/src -I.. -O1 -g0 -Wall
-march=opteron -MT tryswap.o -MD -MP -MF ".deps/tryswap.Tpo" -c -o tryswap.o
/home/gchernis/tryswap/src/tryswap.cpp; then mv -f ".deps/tryswap.Tpo"
".deps/tryswap.Po"; else rm -f ".deps/tryswap.Tpo"; exit 1; fi
/home/gchernis/tryswap/src/tryswap.cpp: In function ‘void
ConvertFloatSSE(void*, void*, int)’:
/home/gchernis/tryswap/src/tryswap.cpp:189: error: unable to find a register to
spill in class ‘GENERAL_REGS’
/home/gchernis/tryswap/src/tryswap.cpp:189: error: this is the insn:
(insn 90 89 91 2 (parallel [
(set (subreg:DI (reg:V16QI 21 xmm0 [102]) 0)
(ashift:DI (reg:DI 1 dx [90])
(const_int 8 [0x8])))
(clobber (reg:CC 17 flags))
]) 394 {*ashldi3_1_rex64} (insn_list:REG_DEP_TRUE 66 (nil))
(expr_list:REG_UNUSED (reg:CC 17 flags)
(expr_list:REG_UNUSED (reg:CC 17 flags)
(expr_list:REG_DEAD (reg:DI 1 dx [90])
(nil)))))
/home/gchernis/tryswap/src/tryswap.cpp:189: confused by earlier errors, bailing
out
gmake[2]: *** [tryswap.o] Error 1
gmake[1]: *** [all-recursive] Error 1
gmake: *** [all] Error 2
*** Exited with status: 2 ***


-- 
           Summary: SSE byte-by-byte load instruction fails to compile
           Product: gcc
           Version: 4.0.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: gchernis11 at msn dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26445

[Bug target/26445] SSE byte-by-byte load instruction fails to compile

[pinskia at gcc dot gnu dot org]

------- Comment #1 from pinskia at gcc dot gnu dot org  2006-02-24 13:11 -------
can you give the full output of gcc -v?


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26445

[Bug target/26445] SSE byte-by-byte load instruction fails to compile

[pinskia at gcc dot gnu dot org]

------- Comment #2 from pinskia at gcc dot gnu dot org  2006-02-25 16:05 -------
Also can you follow the instructions on http://gcc.gnu.org/bugs.html and attach
the preprocessed source?


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pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26445

[Bug target/26445] SSE byte-by-byte load instruction fails to compile

[gchernis11 at msn dot com]

------- Comment #3 from gchernis11 at msn dot com  2006-03-03 20:45 -------
Created an attachment (id=10965)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=10965&action=view)
Preprocessed source that fails


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26445

[Bug target/26445] SSE byte-by-byte load instruction fails to compile

[gchernis11 at msn dot com]

------- Comment #4 from gchernis11 at msn dot com  2006-03-03 20:48 -------
Created an attachment (id=10966)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=10966&action=view)
gcc /v


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26445

[Bug target/26445] SSE byte-by-byte load instruction fails to compile

[pinskia at gcc dot gnu dot org]

------- Comment #5 from pinskia at gcc dot gnu dot org  2006-03-03 20:54 -------
Reducing.


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |pinskia at gcc dot gnu dot
                   |                            |org
           Keywords|                            |ice-on-valid-code


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26445

[Bug target/26445] SSE byte-by-byte load instruction fails to compile

[gchernis11 at msn dot com]

------- Comment #6 from gchernis11 at msn dot com  2006-03-07 22:33 -------
(In reply to comment #5)
> Reducing.

What does it mean?  How do i change status to active?


-- 

gchernis11 at msn dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |UNCONFIRMED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26445

[Bug target/26445] SSE byte-by-byte load instruction fails to compile

[gchernis11 at msn dot com]

------- Comment #7 from gchernis11 at msn dot com  2006-03-13 16:43 -------
Subject: RE:  SSE byte-by-byte load instruction fails to compile

Please let me know what is the status of this bug
Please reply,
Greg Chernis


>From: "pinskia at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>
>Reply-To: gcc-bugzilla@gcc.gnu.org
>To: gchernis11@msn.com
>Subject: [Bug target/26445] SSE byte-by-byte load instruction fails to 
>compile
>Date: 3 Mar 2006 20:54:42 -0000
>
>------- Comment #5 from pinskia at gcc dot gnu dot org  2006-03-03 20:54 
>-------
>Reducing.
>
>
>--
>
>pinskia at gcc dot gnu dot org changed:
>
>            What    |Removed                     |Added
>----------------------------------------------------------------------------
>                  CC|                            |pinskia at gcc dot gnu 
>dot
>                    |                            |org
>            Keywords|                            |ice-on-valid-code
>
>
>http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26445
>
>------- You are receiving this mail because: -------
>You reported the bug, or are watching the reporter.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26445

[Bug target/26445] SSE byte-by-byte load instruction fails to compile

[uros at gcc dot gnu dot org]

------- Comment #8 from uros at gcc dot gnu dot org  2008-04-21 18:41 -------
Subject: Bug 26445

Author: uros
Date: Mon Apr 21 18:41:04 2008
New Revision: 134522

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=134522
Log:
        PR target/26445
        * g++.dg/other/i386-4.C: New test.


Added:
    trunk/gcc/testsuite/g++.dg/other/i386-4.C
Modified:
    trunk/gcc/testsuite/ChangeLog


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26445

[Bug target/26445] SSE byte-by-byte load instruction fails to compile

[ubizjak at gmail dot com]

------- Comment #9 from ubizjak at gmail dot com  2008-04-21 18:43 -------
This is fixed in mainline (and probably for 4.3.0 too).


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ubizjak at gmail dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
      Known to fail|4.2.0 4.0.3                 |4.2.0 4.0.3 4.1.2
      Known to work|                            |4.3.0
         Resolution|                            |FIXED
   Target Milestone|---                         |4.4.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26445