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Hello, I m trying to test individual O3 optimizations/ replicating O3 behavior on IR. I took unoptimized IR (O0), used disable-o0-optnone via (*clang -O0 -Xclang -disable-O0-optnone*). I read somewhere about *clang -O1 -Xclang -disable-O0-optnone,* so I also tested on this initial IR. I have observed by using individual optimizations, the performance (i.e time) is better when the base/initial IR is generated via *clang -O1 -Xclang -disable-O0-optnone*....

Hello, I am getting the following error while trying to build a benchmark with a custom function pass: clang -Xclang -fopenmp=libomp -Xclang -load -Xclang my_lib.so file.c error: unknown argument: '-fopenmp=libomp' If I use this instead: clang -Xclang -fopenmp=libomp -Xclang -load -Xclang my_lib.so file.c I get the error: fatal error: 'omp.h' file not found I am not sure where the problem...

Hi All, We trying to use clang+llvm to generate the gcc coverage format as clang version 3.6.0 $clang --coverage -Xclang -coverage-cfg-checksum -Xclang -coverage-no-function-names-in-data -Xclang -coverage-version='407*' test.c $a.out $llvm-cov gcov test.gcda Unexpected version: *704. Invalid .gcno File! Debugging the above cause ,But any hints from experts here ,will help a lot . Appreciate your time ,T...

...we use without much rhyme or reason, to be honest. Here's what we have and was working (filtered a bit to remove -I, -D, -W flags and sorted out by flag type and in order of what I think matters): > -march=mips32r2 > -mtune=4kem > -msoft-float > -EL > > -Xclang -triple -Xclang mipsel-sde-elf > -Xclang -mrelocation-model -Xclang static > > -Xclang -mllvm -Xclang -mips-ssection-threshold=0 > -Xclang -mllvm -Xclang -enable-mips-delay-filler > > -Xassembler -G -Xassembler 0 -g > > -funsigned-char > -fshort...

...clang unit tests, there is a cuda.h header that provides very basic support for these keywords: tests/SemaCUDA/cuda.h If you compile as CUDA (use .cu extension, or "-x cuda") and use this header, you will have basic support. You can invoke clang with something like: $ clang test1.cu -Xclang -fcuda-is-device -I ../src/clang/test/SemaCUDA -Xclang -triple -Xclang nvptx64 -Xclang -target-cpu -Xclang sm_20 -S ... assuming your clang source directory is ../src/clang, you want 64-bit PTX, and your target SM is 2.0. Adjust accordingly. Clang also knows how to map OpenCL to PTX, so you woul...

On Wed, Aug 15, 2012 at 10:17 PM, Carl Norum <carl at lytro.com> wrote: >> -march=mips32r2 >> -mtune=4kem >> -msoft-float >> -EL >> >> -Xclang -triple -Xclang mipsel-sde-elf >> -Xclang -mrelocation-model -Xclang static >> >> -Xclang -mllvm -Xclang -mips-ssection-threshold=0 >> -Xclang -mllvm -Xclang -enable-mips-delay-filler We generally try to discourage people from using -Xclang flags wherever possib...

...ev_replace.ll That is interesting. Can you send me the individual error messages? Are you using a 32bit platform? > > Expected Passes : 104 > Expected Failures : 29 > Unexpected Failures: 3 > make: *** [polly-test] Error 1 > > When I try your command 'clang -Xclang -load ${POLLY_DLIB} ${FILE}.c -o ${FILE}.ll -S -emit-llvm -mllvm -polly -O0' if fails with the following errors: The command to prepare the code for Polly was incorrect. I missed a '-Xclang' option. The correct one is: clang -Xclang -load -Xclang ${POLLY_DLIB} ${FILE}.c -o ${FILE}.ll...

Well, I tried the command line given by you and I get the following error clang++ nbody.kernel.cu -Xclang -fcuda-is-device -I/home/upitamba/llvm-3.2.src/tools/clang/test/SemaCUDA/ -Xclang -triple -Xclang nvptx64 -Xclang -target-cpu -Xclang sm_10 -S fatal error: error in backend: Cannot select: 0x334a870: v4f32 = NVPTXISD::MoveParam 0x334a770 [ORD=1] [ID=22] 0x334a770: v4f32 = TargetExternalSymbol...

@Craig and @Michael After installing clang-5.0 (download from http://releases.llvm.org, does not have Flang build's slowdown mention above), 1. clang++ -O0 -Xclang -disable-O0-optnone -Xclang -disable-llvm-passes -c -emit-llvm -o a.bc LULESH.cc; opt -O3 a.bc -o b.bc; llc -O3 -filetype=obj b.bc -o b.o ; clang++ b.o -o b.out; ./b.out 20 runtime: 2.354069e+01 2. clang++ -O1 -Xclang -disable-O0-optnone -Xclang -disable-llvm-passes -c -emit-llvm -o a.bc LULESH.cc...

Thanks a lot Justin, I will remove the toolkit header. Just one last question..(maybe ;) ) If I do away with toolkit headers it says unknown type name '__device__'. Does this function qualifier have an alternative ? or I can just do away with ? -- View this message in context: http://llvm.1065342.n5.nabble.com/UNREACHABLE-executed-error-while-trying-to-generate-PTX-tp56026p56093.html

...opper at gmail.com> wrote: > -disable-O0-optnone has no effect with anything other than -O0. > > -O0 being passed to clang also causes all functions to be marked noinline. > I don't know if there is a command line option to turn that off. > > I recommend passing "-O1 -Xclang -disable-llvm-passes" to clang. Passing > -O0 very specifically means disable optimizations. > > ~Craig > > On Sat, Jan 6, 2018 at 12:25 PM, toddy wang <wenwangtoddy at gmail.com> > wrote: > >> @Craig and @Michael >> >> After installing clang-5.0 (d...

-disable-O0-optnone has no effect with anything other than -O0. -O0 being passed to clang also causes all functions to be marked noinline. I don't know if there is a command line option to turn that off. I recommend passing "-O1 -Xclang -disable-llvm-passes" to clang. Passing -O0 very specifically means disable optimizations. ~Craig On Sat, Jan 6, 2018 at 12:25 PM, toddy wang <wenwangtoddy at gmail.com> wrote: > @Craig and @Michael > > After installing clang-5.0 (download from http://releases.llvm.org, does...

On Aug 15, 2012, at 11:56 PM, Eli Friedman wrote: > On Wed, Aug 15, 2012 at 10:17 PM, Carl Norum <carl at lytro.com> wrote: >>> -march=mips32r2 >>> -mtune=4kem >>> -msoft-float >>> -EL >>> >>> -Xclang -triple -Xclang mipsel-sde-elf >>> -Xclang -mrelocation-model -Xclang static >>> >>> -Xclang -mllvm -Xclang -mips-ssection-threshold=0 >>> -Xclang -mllvm -Xclang -enable-mips-delay-filler > > We generally try to discourage people from using -Xcla...

...: > >> -disable-O0-optnone has no effect with anything other than -O0. >> >> -O0 being passed to clang also causes all functions to be marked >> noinline. I don't know if there is a command line option to turn that off. >> >> I recommend passing "-O1 -Xclang -disable-llvm-passes" to clang. Passing >> -O0 very specifically means disable optimizations. >> >> ~Craig >> >> On Sat, Jan 6, 2018 at 12:25 PM, toddy wang <wenwangtoddy at gmail.com> >> wrote: >> >>> @Craig and @Michael >>> &g...

...: Polly :: CodeGen/do_pluto_matmult.ll Polly :: CodeGen/single_do_loop_int_max_iterations.ll Polly :: CodeGen/single_do_loop_scev_replace.ll Expected Passes : 104 Expected Failures : 29 Unexpected Failures: 3 make: *** [polly-test] Error 1 When I try your command 'clang -Xclang -load ${POLLY_DLIB} ${FILE}.c -o ${FILE}.ll -S -emit-llvm -mllvm -polly -O0' if fails with the following errors: -------------------------------------- clang: warning: /Developer/llvm_build/tools/polly/Debug+Asserts/lib/LLVMPolly.dylib: 'linker' input unused when '-S' is presen...

...honest. Here's what we have and was working > (filtered a bit to remove -I, -D, -W flags and sorted out by flag type and > in order of what I think matters): > > > -march=mips32r2 > > -mtune=4kem > > -msoft-float > > -EL > > > > -Xclang -triple -Xclang mipsel-sde-elf > > -Xclang -mrelocation-model -Xclang static > > > > -Xclang -mllvm -Xclang -mips-ssection-threshold=0 > > -Xclang -mllvm -Xclang -enable-mips-delay-filler > > > > -Xassembler -G -Xassembler 0 -g > > > >...

...g 15, 2012, at 11:56 PM, Eli Friedman wrote: > >> On Wed, Aug 15, 2012 at 10:17 PM, Carl Norum <carl at lytro.com> wrote: >>>> -march=mips32r2 >>>> -mtune=4kem >>>> -msoft-float >>>> -EL >>>> >>>> -Xclang -triple -Xclang mipsel-sde-elf >>>> -Xclang -mrelocation-model -Xclang static >>>> >>>> -Xclang -mllvm -Xclang -mips-ssection-threshold=0 >>>> -Xclang -mllvm -Xclang -enable-mips-delay-filler >> >> We generally try to discourage p...

....preopt.ll In general I use an even longer sequence of preoptimizations. This sequence is built directly into Polly and is defined in RegisterPasses.cpp. To get the corresponding opt flags you can load Polly into clang and use the following command (-O3 is important): > clang test.c -O3 -Xclang -load -Xclang lib/LLVMPolly.so -mllvm -debug-pass=Arguments Pass Arguments: -targetdata -no-aa -targetlibinfo -tbaa -basicaa -preverify -domtree -verify -mem2reg -instcombine -simplifycfg -tailcallelim -simplifycfg -reassociate -domtree -loops -loop-simplify -lcssa -loop-rotate -instcombine -sc...

...is fixed in trunk, but with your code I'm now hitting a new issue. I'll get the fix in soon. On Fri, Mar 22, 2013 at 1:08 AM, upit <uday_pitambare at yahoo.com> wrote: > Well, I tried the command line given by you and I get the following error > > clang++ nbody.kernel.cu -Xclang -fcuda-is-device > -I/home/upitamba/llvm-3.2.src/tools/clang/test/SemaCUDA/ -Xclang -triple > -Xclang nvptx64 -Xclang -target-cpu -Xclang sm_10 -S > > fatal error: error in backend: Cannot select: 0x334a870: v4f32 = > NVPTXISD::MoveParam 0x334a770 [ORD=1] [ID=22] > 0x334a770: v4...

...e-arcs -ftest-coverage test.c >> >> bash-4.1$ ./a.out >> >> bash-4.1$ llvm-cov gcov test.c >> >> Unexpected number of edges (in main). >> >> Invalid .gcda File! >> >> >> >> bash-4.1$ clang -g -O0 -fprofile-arcs -ftest-coverage -Xclang >> >> -coverage-cfg-checksum -Xclang -coverage-no-function-names-in-data >> >> test.c >> >> bash-4.1$ ./a.out >> >> bash-4.1$ llvm-cov gcov test.c >> >> Unexpected end of memory buffer: 386832052. >> >> Invalid .gcno File! >...