[PATCH] D29660: [OpenMP] Add flag for overwriting default PTX version for OpenMP targets

[Douglas Yung via Phabricator via cfe-commits]

dyung added a comment.

Hi, we are seeing this test fail on our internal linux build bot. I built/ran your latest change r310537 and here is the test result:

  /home/dyung/src/upstream/llvm_clean/tools/clang/test/Driver/openmp-offload.c:722:23: error: expected string not found in input                                                                                                            
  // CHK-PTXAS-VERSION: clang{{.*}}.bc" {{.*}}"-target-feature" "+ptx52"                                               
                        ^                                                                                              
  <stdin>:1:1: note: scanning from here                                                                                
  clang version 6.0.0 (trunk 310537)                                                                                   
  ^                                                                                                                    
  <stdin>:9:114: note: possible intended match here                                                                    
   "nvlink" "-o" "/tmp/lit_tmp_FMSP4Q/openmp-offload-bb8c5f.out" "-arch" "sm_20" "-L/home/dyung/src/upstream/310537-linux/./lib" "-lomptarget-nvptx" "openmp-offload-74c18d.cubin"                                                          

Executing the run line from line 719 of the file at r310537 produces the following output:

  dyung at Spica:~/src/upstream/llvm_clean/tools/clang/test/Driver$ /home/dyung/src/upstream/310537-linux/./bin/clang  -### -no-canonical-prefixes -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda --fopenmp-ptx=+ptx52 ~/src/upstream/llvm_clean/tools/clang/test/Driver/openmp-offload.c 2>&1                                                                
  clang version 6.0.0 (trunk 310537)                                                                                   
  Target: x86_64-unknown-linux-gnu                                                                                     
  Thread model: posix                                                                                                  
  InstalledDir: /home/dyung/src/upstream/310537-linux/./bin                                                            
  clang: error: cannot find libdevice for sm_20. Provide path to different CUDA installation via --cuda-path, or pass -nocudalib to build without linking with libdevice.                                                                   
  
   "/home/dyung/src/upstream/310537-linux/./bin/clang" "-cc1" "-triple" "x86_64-unknown-linux-gnu" "-emit-llvm-bc" "-emit-llvm-uselists" "-disable-free" "-main-file-name" "openmp-offload.c" "-mrelocation-model" "static" "-mthread-model" "posix" "-mdisable-fp-elim" "-fmath-errno" "-masm-verbose" "-mconstructor-aliases" "-munwind-tables" "-fuse-init-array" "-target-cpu" "x86-64" "-dwarf-column-info" "-debugger-tuning=gdb" "-resource-dir" "/home/dyung/src/upstream/310537-linux/./lib/clang/6.0.0" "-internal-isystem" "/usr/local/include" "-internal-isystem" "/home/dyung/src/upstream/310537-linux/./lib/clang/6.0.0/include" "-internal-externc-isystem" "/usr/include/x86_64-linux-gnu" "-internal-externc-isystem" "/include" "-internal-externc-isystem" "/usr/include" "-internal-isystem" "/usr/local/include" "-internal-isystem" "/home/dyung/src/upstream/310537-linux/./lib/clang/6.0.0/include" "-internal-externc-isystem" "/usr/include/x86_64-linux-gnu" "-internal-externc-isystem" "/include" "-internal-externc-isystem" "/usr/include" "-fdebug-compilation-dir" "/home/dyung/src/upstream/llvm_clean/tools/clang/test/Driver" "-ferror-limit" "19" "-fmessage-length" "117" "-fopenmp" "-fobjc-runtime=gcc" "-fdiagnostics-show-option" "-fcolor-diagnostics" "-o" "/tmp/openmp-offload-e58520.bc" "-x" "c" "/home/dyung/src/upstream/llvm_clean/tools/clang/test/Driver/openmp-offload.c" "-fopenmp-targets=nvptx64-nvidia-cuda"                                                                                                            
  
   "/home/dyung/src/upstream/310537-linux/./bin/clang" "-cc1" "-triple" "nvptx64-nvidia-cuda" "-aux-triple" "x86_64-unknown-linux-gnu" "-S" "-disable-free" "-main-file-name" "openmp-offload.c" "-mrelocation-model" "pic" "-pic-level" "2" "-mthread-model" "posix" "-mdisable-fp-elim" "-fmath-errno" "-no-integrated-as" "-fuse-init-array" "-target-cpu" "sm_20" "-dwarf-column-info" "-debugger-tuning=gdb" "-resource-dir" "/home/dyung/src/upstream/310537-linux/./lib/clang/6.0.0" "-internal-isystem" "/usr/local/include" "-internal-isystem" "/home/dyung/src/upstream/310537-linux/./lib/clang/6.0.0/include" "-internal-externc-isystem" "/usr/include/x86_64-linux-gnu" "-internal-externc-isystem" "/include" "-internal-externc-isystem" "/usr/include" "-internal-isystem" "/usr/local/include" "-internal-isystem" "/home/dyung/src/upstream/310537-linux/./lib/clang/6.0.0/include" "-internal-externc-isystem" "/usr/include/x86_64-linux-gnu" "-internal-externc-isystem" "/include" "-internal-externc-isystem" "/usr/include" "-fno-dwarf-directory-asm" "-fdebug-compilation-dir" "/home/dyung/src/upstream/llvm_clean/tools/clang/test/Driver" "-ferror-limit" "19" "-fmessage-length" "117" "-fopenmp" "-fobjc-runtime=gcc" "-fdiagnostics-show-option" "-fcolor-diagnostics" "-o" "/tmp/openmp-offload-7135c4.s" "-x" "c" "/home/dyung/src/upstream/llvm_clean/tools/clang/test/Driver/openmp-offload.c" "-fopenmp-is-device" "-fopenmp-host-ir-file-path" "/tmp/openmp-offload-e58520.bc"                                                             
  
   "ptxas" "-m64" "-O0" "--gpu-name" "sm_20" "--output-file" "/tmp/openmp-offload-424f8c.cubin" "/tmp/openmp-offload-7135c4.s" "-c"                                                                                                         
  
   "nvlink" "-o" "/tmp/openmp-offload-041499.out" "-arch" "sm_20" "-L/home/dyung/src/upstream/310537-linux/./lib" "-lomptarget-nvptx" "openmp-offload-424f8c.cubin"                                                                         
  
   "/home/dyung/src/upstream/310537-linux/./bin/clang" "-cc1" "-triple" "x86_64-unknown-linux-gnu" "-emit-obj" "-mrelax-all" "-disable-free" "-main-file-name" "openmp-offload.c" "-mrelocation-model" "static" "-mthread-model" "posix" "-mdisable-fp-elim" "-fmath-errno" "-masm-verbose" "-mconstructor-aliases" "-munwind-tables" "-fuse-init-array" "-target-cpu" "x86-64" "-dwarf-column-info" "-debugger-tuning=gdb" "-resource-dir" "/home/dyung/src/upstream/310537-linux/./lib/clang/6.0.0" "-fdebug-compilation-dir" "/home/dyung/src/upstream/llvm_clean/tools/clang/test/Driver" "-ferror-limit" "19" "-fmessage-length" "117" "-fopenmp" "-fobjc-runtime=gcc" "-fdiagnostics-show-option" "-fcolor-diagnostics" "-o" "/tmp/openmp-offload-430e99.o" "-x" "ir" "/tmp/openmp-offload-e58520.bc"                                          
  
   "/usr/bin/ld" "-z" "relro" "--hash-style=gnu" "--eh-frame-hdr" "-m" "elf_x86_64" "-dynamic-linker" "/lib64/ld-linux-x86-64.so.2" "-o" "a.out" "/usr/lib/gcc/x86_64-linux-gnu/5.4.1/../../../x86_64-linux-gnu/crt1.o" "/usr/lib/gcc/x86_64-linux-gnu/5.4.1/../../../x86_64-linux-gnu/crti.o" "/usr/lib/gcc/x86_64-linux-gnu/5.4.1/crtbegin.o" "-L/usr/lib/gcc/x86_64-linux-gnu/5.4.1" "-L/usr/lib/gcc/x86_64-linux-gnu/5.4.1/../../../x86_64-linux-gnu" "-L/lib/x86_64-linux-gnu" "-L/lib/../lib64" "-L/usr/lib/x86_64-linux-gnu" "-L/usr/lib/gcc/x86_64-linux-gnu/5.4.1/../../.." "-L/home/dyung/src/upstream/310537-linux/./bin/../lib" "-L/lib" "-L/usr/lib" "/tmp/openmp-offload-430e99.o" "-lomp" "-lomptarget" "-lgcc" "--as-needed" "-lgcc_s" "--no-as-needed" "-lpthread" "-lc" "-lgcc" "--as-needed" "-lgcc_s" "--no-as-needed" "/usr/lib/gcc/x86_64-linux-gnu/5.4.1/crtend.o" "/usr/lib/gcc/x86_64-linux-gnu/5.4.1/../../../x86_64-linux-gnu/crtn.o" "-T" "/tmp/a-d7e5d0.lk"


Repository:
  rL LLVM

https://reviews.llvm.org/D29660