[LLVMbugs] Rd and Rm should be different in mul (for ARM target)

[Tanya Lattner]

You might want to email llvm-dev as it has a wider audience.

-Tanya

On Feb 26, 2008, at 3:29 AM, Arvind Ayyangar wrote:

> Hi all,
>       I compiled libz using the llvm toolchain. Below are the steps :
>
> llvm-gcc -emit-llvm -DNO_vsnprintf -DUSE_MMAP   -c -o example.o  
> example.c
> llvm-gcc -emit-llvm -DNO_vsnprintf -DUSE_MMAP   -c -o adler32.o  
> adler32.c
> llvm-gcc -emit-llvm -DNO_vsnprintf -DUSE_MMAP   -c -o compress.o  
> compress.c
> llvm-gcc -emit-llvm -DNO_vsnprintf -DUSE_MMAP   -c -o crc32.o crc32.c
> llvm-gcc -emit-llvm -DNO_vsnprintf -DUSE_MMAP   -c -o gzio.o gzio.c
> llvm-gcc -emit-llvm -DNO_vsnprintf -DUSE_MMAP   -c -o uncompr.o  
> uncompr.c
> llvm-gcc -emit-llvm -DNO_vsnprintf -DUSE_MMAP   -c -o deflate.o  
> deflate.c
> llvm-gcc -emit-llvm -DNO_vsnprintf -DUSE_MMAP   -c -o trees.o trees.c
> llvm-gcc -emit-llvm -DNO_vsnprintf -DUSE_MMAP   -c -o zutil.o zutil.c
> llvm-gcc -emit-llvm -DNO_vsnprintf -DUSE_MMAP   -c -o inflate.o  
> inflate.c
> llvm-gcc -emit-llvm -DNO_vsnprintf -DUSE_MMAP   -c -o infback.o  
> infback.c
> llvm-gcc -emit-llvm -DNO_vsnprintf -DUSE_MMAP   -c -o inftrees.o  
> inftrees.c
> llvm-gcc -emit-llvm -DNO_vsnprintf -DUSE_MMAP   -c -o inffast.o  
> inffast.c
> llvm-ld -o libz.so.1.2.3 adler32.o compress.o crc32.o gzio.o uncompr.o
> deflate.o trees.o zutil.o inflate.o infback.o inftrees.o inffast.o
> llc libz.so.1.2.3.bc -o llvmlibz.s -filtype=asm -march=arm
>
>
> Compiling the assemble code generated using the arm-softfloat
> toolchain gives the following assembler messages
>
> gcc llvmlibz.s --shared -o libzllvm.so
> llvmlibz.s: Assembler messages:
> llvmlibz.s:46: Rd and Rm should be different in mul
> llvmlibz.s:113: Rd and Rm should be different in mul
> llvmlibz.s:117: Rd and Rm should be different in mul
> llvmlibz.s:190: Rd and Rm should be different in mla
> llvmlibz.s:202: Rd and Rm should be different in mul
> llvmlibz.s:206: Rd and Rm should be different in mul
> llvmlibz.s:261: Rd and Rm should be different in mul
> llvmlibz.s:266: Rd and Rm should be different in mul
> llvmlibz.s:4770: rdhi, rdlo and rm must all be different
> llvmlibz.s:4834: Rd and Rm should be different in mla
> llvmlibz.s:5130: Rd and Rm should be different in mul
> llvmlibz.s:6103: Rd and Rm should be different in mla
> llvmlibz.s:6817: Rd and Rm should be different in mla
>
>
> I tried using the march=thumb, -soft-float and -mcpu options (thanks
> to the LLVM IRC Channel) but they dint really help..
>
>
>
> -- 
> Arvind
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