Bug 7951 - ICE on -march=pentium4 -O2 -mfpmath=sse
Summary: ICE on -march=pentium4 -O2 -mfpmath=sse
Status: RESOLVED FIXED
Alias: None
Product: gcc
Classification: Unclassified
Component: rtl-optimization (show other bugs)
Version: 3.2
: P3 normal
Target Milestone: ---
Assignee: Not yet assigned to anyone
URL:
Keywords: ice-on-valid-code
Depends on:
Blocks:
 
Reported: 2002-09-17 10:36 UTC by krelisnet
Modified: 2003-07-25 17:33 UTC (History)
2 users (show)

See Also:
Host:
Target:
Build:
Known to work:
Known to fail:
Last reconfirmed:

Attachments
msc2.ii.bz2 (83.62 KB, application/octet-stream)
2003-05-21 15:17 UTC, krelisnet 		Details
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Description krelisnet 2002-09-17 10:36:00 UTC 
With above combination of optimization switches and the function next_emis as specified inline an ICE occurs.

msc2.cc: In function `void add_emis(int, int, int, int, float)':
msc2.cc:98: insn does not satisfy its constraints:
(insn 3297 3868 3299 (set (reg:DF 21 rxmm0)
        (float_extend:DF (reg:SF 8 st(0)))) 133 {*extendsfdf2_1} (nil)
    (nil))
msc2.cc:98: Internal compiler error in reload_cse_simplify_operands, at 
   reload1.c:8369
Please submit a full bug report,

Release:
gcc version 3.2

Environment:
c++ -v -save-temps -march=pentium4 -O2 -mfpmath=sse -c msc2.cc
Reading specs from /usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.2/specs
Configured with: ../gcc-3.2/configure --program-suffix=-3.2 --enable-threads --with-cpu=pentium4 --enable-version-specific-runtime-libs
Thread model: posix
gcc version 3.2
 /usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.2/cpp0 -lang-c++ -D__GNUG__=3 -D__DEPRECATED -D__EXCEPTIONS -v -D__GNUC__=3 -D__GNUC_MINOR__=2 -D__GNUC_PATCHLEVEL__=0 -D__GXX_ABI_VERSION=102 -D__ELF__ -Dunix -D__gnu_linux__ -Dlinux -D__ELF__ -D__unix__ -D__gnu_linux__ -D__linux__ -D__unix -D__linux -Asystem=posix -D__OPTIMIZE__ -D__STDC_HOSTED__=1 -D_GNU_SOURCE -Acpu=i386 -Amachine=i386 -Di386 -D__i386 -D__i386__ -D__pentium4 -D__pentium4__ -D__tune_pentium4__ -D__SSE__ -D__MMX__ -D__SSE2__ msc2.cc msc2.ii
GNU CPP version 3.2 (cpplib) (i386 Linux/ELF)
ignoring nonexistent directory "NONE/include"
ignoring nonexistent directory "/usr/local/i686-pc-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
 /usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.2/include/c++
 /usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.2/include/c++/i686-pc-linux-gnu
 /usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.2/include/c++/backward
 /usr/local/include
 /usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.2/include
 /usr/include
End of search list.
 /usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.2/cc1plus -fpreprocessed msc2.ii -quiet -dumpbase msc2.cc -march=pentium4 -mfpmath=sse -O2 -version -o msc2.s
GNU CPP version 3.2 (cpplib) (i386 Linux/ELF)
GNU C++ version 3.2 (i686-pc-linux-gnu)
	compiled by GNU C version 3.2.
Comment 1 krelisnet 2002-09-17 10:36:00 UTC 
Fix:
Choose either -O instead of -O2 or
remove inline before float next_emis() or
don't use -mfpmath=sse switch.
Comment 2 Jan Hubicka 2002-10-10 08:41:02 UTC 
State-Changed-From-To: open->closed
State-Changed-Why: * reload1.c (emit_input_reload_insns): Use constrain_operands
            instead of constraint_accepts_reg_p to verify optimization.
            (constraint_accepts_reg_p): Kill