[LLVMbugs] [Bug 6109] New: llvm-gcc fails to compile libgcc on linux arm (aapcs)

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=6109

           Summary: llvm-gcc fails to compile libgcc on linux arm (aapcs)
           Product: tools
           Version: trunk
          Platform: PC
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: llvm-gcc
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: rafael.espindola at gmail.com
                CC: llvmbugs at cs.uiuc.edu


Created an attachment (id=4087)
 --> (http://llvm.org/bugs/attachment.cgi?id=4087)
testcase

Attaching the .i too since the bug might be in llvm-gcc.
------------------------------
./cc1 -fpreprocessed libgcov.i -quiet -dumpbase libgcov.c -auxbase-strip
libgcc/./_gcov.o -g -g -O2 -O2 -O2 -W -Wall -Wwrite-strings -Wstrict-prototypes
-Wmissing-prototypes -Wold-style-definition -version -fPIC -o libgcov.s
GNU C version 4.2.1 (Based on Apple Inc. build 5658) (LLVM build)
(arm-none-linux-gnueabi)
        compiled by GNU C version 4.2.4 (Ubuntu 4.2.4-1ubuntu4).
GGC heuristics: --param ggc-min-expand=150 --param ggc-min-heapsize=131072
Compiler executable checksum: 733941845f500241ed6fb8c33dff1192
Instruction does not dominate all uses!
  %lsr.iv.next485 = add i32 %lsr.iv484, 131072    ; <i32> [#uses=2]
  %lsr.iv484 = phi i32 [ 27197440, %bb78.preheader ], [ %lsr.iv.next485, %bb77
] ; <i32> [#uses=1]
Broken module found, compilation aborted!
../../llvm-gcc-4.2/gcc/libgcov.c:644: internal compiler error: Aborted
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://llvm.org/bugs/> for instructions.
--------------------------------
Using -O0 + llc works. Opt fails:

pt -std-compile-opts libgcov.ll -o test.ll
0  opt             0x0000000000ba096a
1  opt             0x0000000000ba0f06
2  libpthread.so.0 0x00007fc9c28237d0
3  opt             0x0000000000794e4e llvm::Value::getValueID() const + 12
4  opt             0x0000000000794e6d bool llvm::isa_impl<llvm::Constant,
llvm::Value>(llvm::Value const&) + 21
5  opt             0x00000000007955f9 llvm::isa_impl_wrap<llvm::Constant,
llvm::Value const, llvm::Value const>::doit(llvm::Value const&) + 21
6  opt             0x0000000000795613 bool
llvm::isa_impl_cl<llvm::Value>::isa<llvm::Constant>(llvm::Value const&) + 21
7  opt             0x000000000079562d bool
llvm::isa_impl_cl<llvm::Value*>::isa<llvm::Constant>(llvm::Value*) + 21
8  opt             0x00000000007cac0c bool llvm::isa<llvm::Constant,
llvm::Value*>(llvm::Value* const&) + 24
9  opt             0x00000000007cb469 llvm::cast_retty<llvm::Constant,
llvm::Value*>::ret_type llvm::dyn_cast<llvm::Constant,
llvm::Value*>(llvm::Value* const&) + 21
10 opt             0x0000000000b4bfbe
11 opt             0x0000000000b5257e
12 opt             0x0000000000b5259d
13 opt             0x0000000000b52924
14 opt             0x0000000000b52a3c
15 opt             0x0000000000b52a81
16 opt             0x0000000000b52ad6
17 opt             0x0000000000b52b1b
18 opt             0x0000000000b53492
19 opt             0x0000000000b534eb
20 opt             0x0000000000b21168
llvm::FPPassManager::runOnFunction(llvm::Function&) + 336
21 opt             0x0000000000b2132f
llvm::FPPassManager::runOnModule(llvm::Module&) + 81
22 opt             0x0000000000b20e54
llvm::MPPassManager::runOnModule(llvm::Module&) + 372
23 opt             0x0000000000b22c83 llvm::PassManagerImpl::run(llvm::Module&)
+ 111
24 opt             0x0000000000b22ce5 llvm::PassManager::run(llvm::Module&) +
33
25 opt             0x00000000007a27c2 main + 3488
26 libc.so.6       0x00007fc9c1b331c4 __libc_start_main + 244
27 opt             0x0000000000794619


bugpoint crashes too


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