[LLVMbugs] [Bug 2268] New: void<unnamed>::FPS::handleSpecialFP(llvm::ilist_iterator< llvm::MachineInstr>&): Assertion `StackTop == 1 && " Stack should have one element on it to return!"' failed

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=2268

           Summary: void<unnamed>::FPS::handleSpecialFP(llvm::ilist_iterator
                    <llvm::MachineInstr>&): Assertion `StackTop == 1 &&
                    "Stack should have one element on it to return!"' failed
           Product: new-bugs
           Version: unspecified
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: edwintorok at gmail.com
                CC: llvmbugs at cs.uiuc.edu


Created an attachment (id=1611)
 --> (http://llvm.org/bugs/attachment.cgi?id=1611)
testcase

While building glibc I get:

cc1: /home/edwin/llvm/llvm-svn/trunk/lib/Target/X86/X86FloatingPoint.cpp:975:
void<unnamed>::FPS::handleSpecialFP(llvm::ilist_iterator<llvm::MachineInstr>&):
 Assertion `StackTop == 1 && "Stack should have one element on it to return!"'
failed.
../sysdeps/ieee754/dbl-64/e_j0.c:529: internal compiler error: Aborted
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://developer.apple.com/bugreporter> for instructions.
make[2]: *** [/home/edwin/glibc-2.7/build-tree/i386-libc/math/e_j0.o] Error 1

To reproduce:
$ llvm-gcc -c -O1 testcase-min.i
cc1: /home/edwin/llvm/llvm-svn/trunk/lib/Target/X86/X86FloatingPoint.cpp:975:
void<unnamed>::FPS::handleSpecialFP(llvm::ilist_iterator<llvm::MachineInstr>&):
Assertion `StackTop == 1 && "Stack should have one element on it to return!"'
failed.
testcase-min.i:53: internal compiler error: Aborted

This error occurs 27 times during the glibc build
$ grep "Stack should have one element on it to return" ../../i386-libc/log|wc
-l
27

I was able to build these files with an older llvm revision a while ago.

I am unable to reproduce this by generating llvm bitcode (does llvm-gcc run
another pass that is not in -std-compile-opts?)

These both work:

$ llvm-gcc -O1 testcase-min.i -c -emit-llvm -o -|opt -std-compile-opts|llc|as
$ llvm-gcc -O1 testcase-min.i -c -emit-llvm -o -|llc|as

$ uname -a
Linux thunder 2.6.25-rc6-00268-gd2532dd-dirty #23 SMP PREEMPT Sun Mar 23
18:34:55 EET 2008 i686 GNU/Linux


-- 
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.