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Hi, I want to explorer affection of compiler on low power. For the project background, I tend to process this work via LLVM, rather than GCC. And the Target is ARM. For this purpose, clang(3.2) + arm-gcc + simplescalar-arm(and panalyzer) seems to be a good choice. But I encounter several problems in the processing of setup the environment. ---------------------------------- 1. Firstly, arm toolchain is built via ‘buildroot-2012.08’: arm-linux-gcc, I compile MiBench step by step or on one step as follows: clang -emit-llvm —target...

Hello, I want to compile MiBench by clang, and the target-ISA is armv4. The code generated using llvm-2.9, clang-2.9, and arm-linux-gcc (gcc version 2.95.2), simulator is sim-panalyzer 2.0.3 . I use these commends: $ clang -O3 -o hello.ll -c -emit-llvm hello.c $ llc -O3 -o hello.s -march=arm -mcpu=strongarm1100 hello.ll $ arm-linux-gcc -O3 -march=armv4 -mcpu=strongarm1100 -static -mfloat-abi=soft hello.s -o hello Unfortunately, I get some error messages: hello.s: Assembler me...

> generated using llvm-2.9, clang-2.9, and arm-linux-gcc (gcc version 2.95.2), > simulator is sim-panalyzer 2.0.3 . LLVM/Clang 2.9 is too old. Please use LLVM/Clang 3.1 release or svn. Regards, chenwj -- Wei-Ren Chen (陳韋任) Computer Systems Lab, Institute of Information Science, Academia Sinica, Taiwan (R.O.C.) Tel:886-2-2788-3799 #1667 Homepage: http://people.cs.nctu.edu.tw/~chenwj

I tried llvm/clang-3.1 previously. It was not work, so I use version 2.9 now. Best regards, Yi Mei Chen 2012/9/25 陳韋任 (Wei-Ren Chen) <chenwj at iis.sinica.edu.tw> > > generated using llvm-2.9, clang-2.9, and arm-linux-gcc (gcc version > 2.95.2), > > simulator is sim-panalyzer 2.0.3 . > > LLVM/Clang 2.9 is too old. Please use LLVM/Clang 3.1 release or svn. > > Regards, > chenwj > > -- > Wei-Ren Chen (陳韋任) > Computer Systems Lab, Institute of Information Science, > Academia Sinica, Taiwan (R.O.C.) > Tel:886-2-2788-3799 #1667 > Homepag...

...You need to upgrade. -Jim On Sep 24, 2012, at 3:31 AM, 陳奕梅 <ymchen at sslab5.cs.nctu.edu.tw> wrote: > Hello, > > I want to compile MiBench by clang, and the target-ISA is armv4. The code generated using llvm-2.9, clang-2.9, and arm-linux-gcc (gcc version 2.95.2), simulator is sim-panalyzer 2.0.3 . > > I use these commends: > > $ clang -O3 -o hello.ll -c -emit-llvm hello.c > $ llc -O3 -o hello.s -march=arm -mcpu=strongarm1100 hello.ll > $ arm-linux-gcc -O3 -march=armv4 -mcpu=strongarm1100 -static -mfloat-abi=soft hello.s -o hello > > Unfortunately, I get som...

Simplescalar is not compatible with llvm because the binutils simplescalar is based on is ancient. Jim On Sep 26, 2012, at 12:21 AM, 陳奕梅 <ymchen at sslab.cs.nctu.edu.tw> wrote: > Dear all > > I use arm-linux-gcc 2.95.2, because the code generated by version 3.X and 4.X can not run on SimpleScalar. > So I use the arm-linux-gcc 2.95.2 *only*, the version is recommended by