[LLVMbugs] [Bug 6470] New: Assertion failed: (false && "Ran out of registers during register allocation!")

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=6470

           Summary: Assertion failed: (false && "Ran out of registers
                    during register allocation!")
           Product: libraries
           Version: trunk
          Platform: Other
        OS/Version: FreeBSD
            Status: NEW
          Severity: normal
          Priority: P5
         Component: Common Code Generator Code
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: hinokind at gmail.com
                CC: llvmbugs at cs.uiuc.edu


Created an attachment (id=4367)
 --> (http://llvm.org/bugs/attachment.cgi?id=4367)
testcase

i386-only, -O1 and above

$ cat assert14.c
int main() {
    static char foo[2][8];
    char *x=&foo[0][0];
    char *y=&foo[1][0];
    asm volatile(
    "add %1, %%""esi""   \n\t"
    :
    :  "g" (x),  "g" (y)
    : "%""eax", "%""ecx", "%""edx", "%""esi", "%""edi"
    );
}


$ clang -m32 -O1 assert14.c
Assertion failed: (false && "Ran out of registers during register
allocation!"), function assignRegOrStackSlotAtInterval, file
RegAllocLinearScan.cpp, line 1179.
Stack dump:
0.    Program arguments: /usr/local/bin/clang -cc1 -triple
i386-segfault-freebsd8.0 -S -disable-free -main-file-name assert14.c
-mrelocation-model static -mdisable-fp-elim -mconstructor-aliases -target-cpu
pentium4 -resource-dir /usr/local/lib/clang/1.1 -O1 -fmessage-length 157
-fgnu-runtime -fdiagnostics-show-option -fcolor-diagnostics -o /tmp/cc-ZQW8dV.s
-x c assert14.c 
1.    <eof> parser at end of file
2.    Code generation
3.    Running pass 'Linear Scan Register Allocator' on function '@main'
clang: error: compiler command failed due to signal 6 (use -v to see
invocation)


$ clang --version
clang version 1.1 (trunk 97589)
Target: x86_64-segfault-freebsd8.0
Thread model: posix

-- 
Configure bugmail: http://llvm.org/bugs/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.