[LLVMbugs] [Bug 16070] New: TOT compiles incorrectly for arm-linux-gnueabihf

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Sun May 19 11:32:38 PDT 2013 

http://llvm.org/bugs/show_bug.cgi?id=16070

            Bug ID: 16070
           Summary: TOT compiles incorrectly for arm-linux-gnueabihf
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Driver
          Assignee: unassignedclangbugs at nondot.org
          Reporter: steveire at gmail.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

arm-linux-gnueabi works fine:

$ ~/dev/prefix/bin/clang -target arm-linux-gnueabi main.c

$ ~/dev/prefix/bin/clang -target arm-linux-gnueabihf main.c
/usr/lib/gcc-cross/arm-linux-gnueabihf/4.7/../../../../arm-linux-gnueabihf/bin/ld:
BFD (GNU Binutils for Ubuntu) 2.23.2 assertion fail ../../bfd/elf32-arm.c:11763
clang-3.4: error: linker command failed with exit code 1 (use -v to see
invocation)


stephen at hal:~/cpp$ ~/dev/prefix/bin/clang -target arm-linux-gnueabihf -v main.c
clang version 3.4 
Target: arm--linux-gnueabihf
Thread model: posix
 "/home/stephen/dev/prefix/bin/clang-3.4" -cc1 -triple armv4t--linux-gnueabihf
-S -disable-free -main-file-name main.c -mrelocation-model static
-mdisable-fp-elim -fmath-errno -mconstructor-aliases -fuse-init-array
-target-abi aapcs-linux -target-cpu arm7tdmi -mfloat-abi hard -v -resource-dir
/home/stephen/dev/prefix/bin/../lib/clang/3.4 -internal-isystem
/usr/local/include -internal-isystem
/home/stephen/dev/prefix/bin/../lib/clang/3.4/include -internal-externc-isystem
/include -internal-externc-isystem /usr/include -fno-dwarf-directory-asm
-fdebug-compilation-dir /home/stephen/cpp -ferror-limit 19 -fmessage-length 211
-mstackrealign -fno-signed-char -fobjc-runtime=gcc
-fobjc-default-synthesize-properties -fdiagnostics-show-option
-fcolor-diagnostics -backend-option -vectorize-loops -o /tmp/main-kwypTI.s -x c
main.c
clang -cc1 version 3.4 based upon LLVM 3.4svn default target
x86_64-unknown-linux-gnu
ignoring nonexistent directory "/include"
#include "..." search starts here:
#include <...> search starts here:
 /usr/local/include
 /home/stephen/dev/prefix/bin/../lib/clang/3.4/include
 /usr/include
End of search list.

"/usr/lib/gcc-cross/arm-linux-gnueabihf/4.7/../../../../arm-linux-gnueabihf/bin/as"
-mfloat-abi=hard -o /tmp/main-bZUvpN.o /tmp/main-kwypTI.s

"/usr/lib/gcc-cross/arm-linux-gnueabihf/4.7/../../../../arm-linux-gnueabihf/bin/ld"
-z relro -X --hash-style=gnu --build-id --eh-frame-hdr -m armelf_linux_eabi
-dynamic-linker /lib/ld-linux-armhf.so.3 -o a.out
/usr/lib/gcc-cross/arm-linux-gnueabihf/4.7/../../../../arm-linux-gnueabihf/lib/crt1.o
/usr/lib/gcc-cross/arm-linux-gnueabihf/4.7/../../../../arm-linux-gnueabihf/lib/crti.o
/usr/lib/gcc-cross/arm-linux-gnueabihf/4.7/crtbegin.o
-L/usr/lib/gcc-cross/arm-linux-gnueabihf/4.7
-L/usr/lib/gcc-cross/arm-linux-gnueabihf/4.7/../../../../lib32
-L/usr/lib/gcc-cross/arm-linux-gnueabihf/4.7/../../../../../usr/lib/../lib32
-L/usr/lib/gcc-cross/arm-linux-gnueabihf/4.7/../../../../arm-linux-gnueabihf/lib
-L/usr/lib/gcc-cross/arm-linux-gnueabihf/4.7/../../.. -L/lib -L/usr/lib
/tmp/main-bZUvpN.o -lgcc --as-needed -lgcc_s --no-as-needed -lc -lgcc
--as-needed -lgcc_s --no-as-needed
/usr/lib/gcc-cross/arm-linux-gnueabihf/4.7/crtend.o
/usr/lib/gcc-cross/arm-linux-gnueabihf/4.7/../../../../arm-linux-gnueabihf/lib/crtn.o
/usr/lib/gcc-cross/arm-linux-gnueabihf/4.7/../../../../arm-linux-gnueabihf/bin/ld:
BFD (GNU Binutils for Ubuntu) 2.23.2 assertion fail ../../bfd/elf32-arm.c:11763
clang-3.4: error: linker command failed with exit code 1 (use -v to see
invocation)

stephen at hal:~/cpp$ ~/dev/prefix/bin/clang -target arm-linux-gnueabi -v main.c
clang version 3.4 
Target: arm--linux-gnueabi
Thread model: posix
 "/home/stephen/dev/prefix/bin/clang-3.4" -cc1 -triple armv4t--linux-gnueabi -S
-disable-free -main-file-name main.c -mrelocation-model static
-mdisable-fp-elim -fmath-errno -mconstructor-aliases -fuse-init-array
-target-abi aapcs-linux -target-cpu arm7tdmi -mfloat-abi soft -target-feature
+soft-float-abi -v -resource-dir /home/stephen/dev/prefix/bin/../lib/clang/3.4
-internal-isystem /usr/local/include -internal-isystem
/home/stephen/dev/prefix/bin/../lib/clang/3.4/include -internal-externc-isystem
/include -internal-externc-isystem /usr/include -fno-dwarf-directory-asm
-fdebug-compilation-dir /home/stephen/cpp -ferror-limit 19 -fmessage-length 211
-mstackrealign -fno-signed-char -fobjc-runtime=gcc
-fobjc-default-synthesize-properties -fdiagnostics-show-option
-fcolor-diagnostics -backend-option -vectorize-loops -o /tmp/main-sWuJev.s -x c
main.c
clang -cc1 version 3.4 based upon LLVM 3.4svn default target
x86_64-unknown-linux-gnu
ignoring nonexistent directory "/include"
#include "..." search starts here:
#include <...> search starts here:
 /usr/local/include
 /home/stephen/dev/prefix/bin/../lib/clang/3.4/include
 /usr/include
End of search list.

"/usr/lib/gcc-cross/arm-linux-gnueabi/4.7/../../../../arm-linux-gnueabi/bin/as"
-mfloat-abi=softfp -o /tmp/main-1TzsDP.o /tmp/main-sWuJev.s

"/usr/lib/gcc-cross/arm-linux-gnueabi/4.7/../../../../arm-linux-gnueabi/bin/ld"
-z relro -X --hash-style=gnu --build-id --eh-frame-hdr -m armelf_linux_eabi
-dynamic-linker /lib/ld-linux.so.3 -o a.out
/usr/lib/gcc-cross/arm-linux-gnueabi/4.7/../../../../arm-linux-gnueabi/lib/crt1.o
/usr/lib/gcc-cross/arm-linux-gnueabi/4.7/../../../../arm-linux-gnueabi/lib/crti.o
/usr/lib/gcc-cross/arm-linux-gnueabi/4.7/crtbegin.o
-L/usr/lib/gcc-cross/arm-linux-gnueabi/4.7
-L/usr/lib/gcc-cross/arm-linux-gnueabi/4.7/../../../../lib32
-L/usr/lib/gcc-cross/arm-linux-gnueabi/4.7/../../../../../usr/lib/../lib32
-L/usr/lib/gcc-cross/arm-linux-gnueabi/4.7/../../../../arm-linux-gnueabi/lib
-L/usr/lib/gcc-cross/arm-linux-gnueabi/4.7/../../.. -L/lib -L/usr/lib
/tmp/main-1TzsDP.o -lgcc --as-needed -lgcc_s --no-as-needed -lc -lgcc
--as-needed -lgcc_s --no-as-needed
/usr/lib/gcc-cross/arm-linux-gnueabi/4.7/crtend.o
/usr/lib/gcc-cross/arm-linux-gnueabi/4.7/../../../../arm-linux-gnueabi/lib/crtn.o



My distro clang compiles with the cortex-a8 cpu-target:

$ clang -target arm-linux-gnueabihf -v -c main.c
Ubuntu clang version 3.2-1~exp9ubuntu1 (tags/RELEASE_32/final) (based on LLVM
3.2)
Target: arm--linux-gnueabihf
Thread model: posix
 "/usr/bin/clang" -cc1 -triple armv4t--linux-gnueabihf -S -disable-free
-disable-llvm-verifier -main-file-name main.c -mrelocation-model static
-mdisable-fp-elim -fmath-errno -mconstructor-aliases -target-abi aapcs-linux
-target-cpu cortex-a8 -mfloat-abi hard -target-feature +vfp3 -target-feature
+d16 -target-feature -neon -target-linker-version 2.23.2
-momit-leaf-frame-pointer -v -coverage-file /tmp/main-Wcg5Iu.s -resource-dir
/usr/bin/../lib/clang/3.2 -fmodule-cache-path /var/tmp/clang-module-cache
-internal-isystem /usr/local/include -internal-isystem
/usr/bin/../lib/clang/3.2/include -internal-isystem
/usr/include/clang/3.2/include/ -internal-externc-isystem
/usr/include/x86_64-linux-gnu -internal-externc-isystem
/usr/include/x86_64-linux-gnu -internal-externc-isystem /usr/include
-fno-dwarf-directory-asm -fdebug-compilation-dir /home/stephen/cpp
-ferror-limit 19 -fmessage-length 211 -mstackrealign -fno-signed-char
-fobjc-runtime=gcc -fdiagnostics-show-option -fcolor-diagnostics -o
/tmp/main-Wcg5Iu.s -x c main.c
clang -cc1 version 3.2 based upon LLVM 3.2svn default target
x86_64-pc-linux-gnu
ignoring nonexistent directory "/usr/bin/../lib/clang/3.2/include"
ignoring duplicate directory "/usr/include/x86_64-linux-gnu"
#include "..." search starts here:
#include <...> search starts here:
 /usr/local/include
 /usr/include/clang/3.2/include
 /usr/include/x86_64-linux-gnu
 /usr/include
End of search list.
 "/usr/bin/arm-linux-gnueabihf-as" -mfloat-abi=hard -o main.o
/tmp/main-Wcg5Iu.s



If I invoke clang TOT as the driver does, but I change the cpu-target to
cortex-a8 it works fine (if I also use the same assembler line).

$
"/usr/lib/gcc-cross/arm-linux-gnueabihf/4.7/../../../../arm-linux-gnueabihf/bin/as"
-mfloat-abi=hard -o main.o main.s 

$ ~/dev/prefix/bin/clang -target arm-linux-gnueabihf -v main.o
clang version 3.4 
Target: arm--linux-gnueabihf
Thread model: posix

"/usr/lib/gcc-cross/arm-linux-gnueabihf/4.7/../../../../arm-linux-gnueabihf/bin/ld"
-z relro -X --hash-style=gnu --build-id --eh-frame-hdr -m armelf_linux_eabi
-dynamic-linker /lib/ld-linux-armhf.so.3 -o a.out
/usr/lib/gcc-cross/arm-linux-gnueabihf/4.7/../../../../arm-linux-gnueabihf/lib/crt1.o
/usr/lib/gcc-cross/arm-linux-gnueabihf/4.7/../../../../arm-linux-gnueabihf/lib/crti.o
/usr/lib/gcc-cross/arm-linux-gnueabihf/4.7/crtbegin.o
-L/usr/lib/gcc-cross/arm-linux-gnueabihf/4.7
-L/usr/lib/gcc-cross/arm-linux-gnueabihf/4.7/../../../../lib32
-L/usr/lib/gcc-cross/arm-linux-gnueabihf/4.7/../../../../../usr/lib/../lib32
-L/usr/lib/gcc-cross/arm-linux-gnueabihf/4.7/../../../../arm-linux-gnueabihf/lib
-L/usr/lib/gcc-cross/arm-linux-gnueabihf/4.7/../../.. -L/lib -L/usr/lib main.o
-lgcc --as-needed -lgcc_s --no-as-needed -lc -lgcc --as-needed -lgcc_s
--no-as-needed /usr/lib/gcc-cross/arm-linux-gnueabihf/4.7/crtend.o
/usr/lib/gcc-cross/arm-linux-gnueabihf/4.7/../../../../arm-linux-gnueabihf/lib/crtn.o

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