Hi, I tried to run the SPEC benchmark suite SPECCPU 2006 with llvm and clang 2.8. When building the perlbench sources I get these errors (see below) for all the source files. I used a config file ( http://old.nabble.com/file/p30085184/llvm.cfg llvm.cfg ) where I specify clang as the compiler. I verified the same sources with llvm-gcc and it works fine. Also, I verified the sjeng benchmark from the same suite and it builds and executes correctly with both front-ends. I have run these SPEC benches with llvm 2.7 using clang without any problems, but in 2.8 I get these errors. I have tested it both with the llvm 2.8 release version and with the svn version, all of them compiled from sources. I tried recompiling clang and llvm to make sure they were not mis-compiled, but it is all the same. I have a copy of llvm 2.7 on my machine, but I specify the path to the 2.8 executables in my scripts and config files. Are there any conflicts between different versions, or is it possible to be a bug in clang? Thank you, Alexandra And here is the error: Hostname.o: In function `gnu_dev_major': Hostname.c:(.text+0x0): multiple definition of `gnu_dev_major' av.o:av.c:(.text+0x0): first defined here Hostname.o: In function `gnu_dev_minor': Hostname.c:(.text+0x20): multiple definition of `gnu_dev_minor' av.o:av.c:(.text+0x20): first defined here Hostname.o: In function `gnu_dev_makedev': Hostname.c:(.text+0x40): multiple definition of `gnu_dev_makedev' av.o:av.c:(.text+0x40): first defined here Hostname.o: In function `tolower': Hostname.c:(.text+0x80): multiple definition of `tolower' av.o:av.c:(.text+0x80): first defined here Hostname.o: In function `toupper': Hostname.c:(.text+0xb0): multiple definition of `toupper' av.o:av.c:(.text+0xb0): first defined here Hostname.o: In function `atof': Hostname.c:(.text+0xe0): multiple definition of `atof' av.o:av.c:(.text+0xe0): first defined here Hostname.o: In function `atoi': Hostname.c:(.text+0xf0): multiple definition of `atoi' av.o:av.c:(.text+0xf0): first defined here Hostname.o: In function `atol': Hostname.c:(.text+0x110): multiple definition of `atol' av.o:av.c:(.text+0x110): first defined here Hostname.o: In function `atoll': Hostname.c:(.text+0x130): multiple definition of `atoll' av.o:av.c:(.text+0x130): first defined here Hostname.o: In function `__strcspn_c1': Hostname.c:(.text+0x150): multiple definition of `__strcspn_c1' av.o:av.c:(.text+0x150): first defined here Hostname.o: In function `__strcspn_c2': Hostname.c:(.text+0x180): multiple definition of `__strcspn_c2' av.o:av.c:(.text+0x180): first defined here Hostname.o: In function `__strcspn_c3': Hostname.c:(.text+0x1b0): multiple definition of `__strcspn_c3' av.o:av.c:(.text+0x1b0): first defined here Hostname.o: In function `__strspn_c1': Hostname.c:(.text+0x1e0): multiple definition of `__strspn_c1' av.o:av.c:(.text+0x1e0): first defined here Hostname.o: In function `__strspn_c2': Hostname.c:(.text+0x200): multiple definition of `__strspn_c2' av.o:av.c:(.text+0x200): first defined here Hostname.o: In function `__strspn_c3': Hostname.c:(.text+0x230): multiple definition of `__strspn_c3' av.o:av.c:(.text+0x230): first defined here Hostname.o: In function `__strpbrk_c2': Hostname.c:(.text+0x260): multiple definition of `__strpbrk_c2' av.o:av.c:(.text+0x260): first defined here Hostname.o: In function `__strpbrk_c3': Hostname.c:(.text+0x290): multiple definition of `__strpbrk_c3' av.o:av.c:(.text+0x290): first defined here Hostname.o: In function `__strtok_r_1c': Hostname.c:(.text+0x2d0): multiple definition of `__strtok_r_1c' av.o:av.c:(.text+0x2d0): first defined here Hostname.o: In function `__strsep_1c': Hostname.c:(.text+0x320): multiple definition of `__strsep_1c' av.o:av.c:(.text+0x320): first defined here Hostname.o: In function `__strsep_2c': Hostname.c:(.text+0x360): multiple definition of `__strsep_2c' av.o:av.c:(.text+0x360): first defined here Hostname.o: In function `__strsep_3c': Hostname.c:(.text+0x3b0): multiple definition of `__strsep_3c' av.o:av.c:(.text+0x3b0): first defined here Hostname.o: In function `__cmsg_nxthdr': Hostname.c:(.text+0x400): multiple definition of `__cmsg_nxthdr' av.o:av.c:(.text+0x400): first defined here Hostname.o: In function `stat': Hostname.c:(.text+0x450): multiple definition of `stat' av.o:av.c:(.text+0x450): first defined here Hostname.o: In function `lstat': Hostname.c:(.text+0x470): multiple definition of `lstat' av.o:av.c:(.text+0x470): first defined here Hostname.o: In function `fstat': Hostname.c:(.text+0x490): multiple definition of `fstat' av.o:av.c:(.text+0x490): first defined here Hostname.o: In function `fstatat': Hostname.c:(.text+0x4b0): multiple definition of `fstatat' av.o:av.c:(.text+0x4b0): first defined here Hostname.o: In function `mknod': Hostname.c:(.text+0x4d0): multiple definition of `mknod' av.o:av.c:(.text+0x4d0): first defined here Hostname.o: In function `mknodat': Hostname.c:(.text+0x500): multiple definition of `mknodat' av.o:av.c:(.text+0x500): first defined here Hostname.o: In function `strtoimax': Hostname.c:(.text+0x530): multiple definition of `strtoimax' av.o:av.c:(.text+0x530): first defined here Hostname.o: In function `strtoumax': Hostname.c:(.text+0x540): multiple definition of `strtoumax' av.o:av.c:(.text+0x540): first defined here Hostname.o: In function `wcstoimax': Hostname.c:(.text+0x550): multiple definition of `wcstoimax' av.o:av.c:(.text+0x550): first defined here Hostname.o: In function `wcstoumax': Hostname.c:(.text+0x560): multiple definition of `wcstoumax' av.o:av.c:(.text+0x560): first defined here Hostname.o: In function `vprintf': Hostname.c:(.text+0x570): multiple definition of `vprintf' av.o:av.c:(.text+0x570): first defined here Hostname.o: In function `getchar': Hostname.c:(.text+0x590): multiple definition of `getchar' av.o:av.c:(.text+0x590): first defined here Hostname.o: In function `fgetc_unlocked': Hostname.c:(.text+0x5b0): multiple definition of `fgetc_unlocked' av.o:av.c:(.text+0x5b0): first defined here Hostname.o: In function `getc_unlocked': Hostname.c:(.text+0x5e0): multiple definition of `getc_unlocked' av.o:av.c:(.text+0x5e0): first defined here Hostname.o: In function `getchar_unlocked': Hostname.c:(.text+0x610): multiple definition of `getchar_unlocked' av.o:av.c:(.text+0x610): first defined here Hostname.o: In function `putchar': Hostname.c:(.text+0x640): multiple definition of `putchar' av.o:av.c:(.text+0x640): first defined here Hostname.o: In function `fputc_unlocked': Hostname.c:(.text+0x660): multiple definition of `fputc_unlocked' av.o:av.c:(.text+0x660): first defined here Hostname.o: In function `putc_unlocked': Hostname.c:(.text+0x690): multiple definition of `putc_unlocked' av.o:av.c:(.text+0x690): first defined here Hostname.o: In function `putchar_unlocked': Hostname.c:(.text+0x6c0): multiple definition of `putchar_unlocked' av.o:av.c:(.text+0x6c0): first defined here Hostname.o: In function `feof_unlocked': Hostname.c:(.text+0x700): multiple definition of `feof_unlocked' av.o:av.c:(.text+0x700): first defined here Hostname.o: In function `ferror_unlocked': Hostname.c:(.text+0x710): multiple definition of `ferror_unlocked' av.o:av.c:(.text+0x710): first defined here Hostname.o: In function `__signbitf': Hostname.c:(.text+0x720): multiple definition of `__signbitf' av.o:av.c:(.text+0x720): first defined here Hostname.o: In function `__signbit': Hostname.c:(.text+0x730): multiple definition of `__signbit' av.o:av.c:(.text+0x730): first defined here Hostname.o: In function `__signbitl': Hostname.c:(.text+0x740): multiple definition of `__signbitl' av.o:av.c:(.text+0x740): first defined here -- View this message in context: http://old.nabble.com/%22multiple-definition-of-..-%22--in-clang-2.8-tp30085184p30085184.html Sent from the LLVM - Dev mailing list archive at Nabble.com.
It seems that the problem occurs from the optimization level. In the 2.7
version I was using -O0 and in 2.8 I tested the same benchmarks with -O3.
clang -O0 works fine, while clang -O3 makes redefinitions (probably it is
related to inlining) of the functions from stdlib.h, math.h and some other
libraries. To give one example, function atoi is defined in the generated
*.ll file:
define i32 @atoi(i8* %__nptr) nounwind inlinehint {
entry:
%call = tail call i64 @strtol(i8* nocapture %__nptr, i8** null, i32 10)
nounwind readonly
%conv = trunc i64 %call to i32
ret i32 %conv
}
although it is not defined in the original C file.
And clang redefines it in all the *.ll files it generates, from each C file
in the perlbench (SPEC CPU 2006).
Similarly for all the other functions, which appear in the end to be
redefined and give errors.
Am I on the right track with this errors? I need to use the -O3 optimization
level in my tests, so how can I avoid this problem?
Alexandra
--
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On Nov 2, 2010, at 9:56 AM, Xinfinity wrote:> It seems that the problem occurs from the optimization level. In the 2.7 > version I was using -O0 and in 2.8 I tested the same benchmarks with -O3.For the record, this post is more appropriate for cfe-dev.> clang -O0 works fine, while clang -O3 makes redefinitions (probably it is > related to inlining) of the functions from stdlib.h, math.h and some other > libraries. To give one example, function atoi is defined in the generated > *.ll file:Please file a bug (http://llvm.org/bugs) with some preprocessed source. It looks like your standard headers are doing something very strange. Can you tell us something about your system (architecture, OS, distribution)? John.