#7922: adding direct *.c -> object code (*.o/so/dylib) support to compilation driver ---------------------------------+------------------------------------------ Reporter: carter | Owner: Type: feature request | Status: infoneeded Priority: normal | Milestone: Component: Compiler | Version: 7.7 Keywords: | Os: Unknown/Multiple Architecture: Unknown/Multiple | Failure: None/Unknown Difficulty: Unknown | Testcase: Blockedby: | Blocking: Related: #7904 | ---------------------------------+------------------------------------------ Comment(by carter): heres the result of {{{ ./Setup build -v }}} {{{ ./Setup build -v executable 'test'creating dist/build creating dist/build/autogen Building test-0.1.0.0... Preprocessing executable 'test' for test-0.1.0.0... Building executable test... creating dist/build/test creating dist/build/test/test-tmp '/usr/local/bin/ghc' '--make' '-no-link' '-fbuilding-cabal-package' '-O' '-static' '-odir' 'dist/build/test/test-tmp' '-hidir' 'dist/build/test /test-tmp' '-stubdir' 'dist/build/test/test-tmp' '-i' '-idist/build/test /test-tmp' '-isrc' '-idist/build/autogen' '-Idist/build/autogen' '-Idist/build/test/test-tmp' '-optP-include' '-optPdist/build/autogen/cabal_macros.h' '-hide-all-packages' '-package- db' 'dist/package.conf.inplace' '-package-id' 'base-4.6.0.1-2514ecbfe6573e639515d3e91d6e1f29' '-package-id' 'vector-0.10.0.1-04d4a4538e7c444d2821bb98877cda5f' '-XHaskell2010' 'src/main.hs' Building C Sources... creating dist/build/test/test-tmp '/usr/local/bin/ghc' '-c' '-static' '-odir' 'dist/build/test/test-tmp' '-Idist/build/test/test-tmp' '-optc-march=native' '-optc-O3' '-optc-O2' '-package-db' 'dist/package.conf.inplace' '-package-id' 'base-4.6.0.1-2514ecbfe6573e639515d3e91d6e1f29' '-package-id' 'vector-0.10.0.1-04d4a4538e7c444d2821bb98877cda5f' 'cbits/daft.c' /var/folders/py/wgp_hj9d2rl3cx48yym_ynj00000gn/T/ghc46908_0/ghc46908_0.s:6:0: no such instruction: `vmovupd (%rdi), %xmm0' /var/folders/py/wgp_hj9d2rl3cx48yym_ynj00000gn/T/ghc46908_0/ghc46908_0.s:7:0: no such instruction: `vaddpd %xmm0, %xmm0,%xmm0' /var/folders/py/wgp_hj9d2rl3cx48yym_ynj00000gn/T/ghc46908_0/ghc46908_0.s:8:0: no such instruction: `vmovupd %xmm0, (%rsi)' }}} heres my attempt at doing it as you suggest {{{carter code/test ยป '/usr/local/bin/ghc' '-c' '-static' '-odir' 'dist/build/test/test-tmp' '-Idist/build/test/test-tmp' '-optc- march=native' '-opta-march=native' '-optc-O3' '-optc-O2' '-package-db' 'dist/package.conf.inplace' '-package-id' 'base-4.6.0.1-2514ecbfe6573e639515d3e91d6e1f29' '-package-id' 'vector-0.10.0.1-04d4a4538e7c444d2821bb98877cda5f' 'cbits/daft.c' -opta- march=native /var/folders/py/wgp_hj9d2rl3cx48yym_ynj00000gn/T/ghc46918_0/ghc46918_0.s:6:0: no such instruction: `vmovupd (%rdi), %xmm0' /var/folders/py/wgp_hj9d2rl3cx48yym_ynj00000gn/T/ghc46918_0/ghc46918_0.s:7:0: no such instruction: `vaddpd %xmm0, %xmm0,%xmm0' /var/folders/py/wgp_hj9d2rl3cx48yym_ynj00000gn/T/ghc46918_0/ghc46918_0.s:8:0: no such instruction: `vmovupd %xmm0, (%rsi)' }}} Let me repeat the problem: the apple assembler is OLD, and UNMAINTAINED. It is gas from ~ gcc-4.2 or slightly earlier days. There is no alternative "as" on mac, though gcc and clang sortah provide an assembler pass that doesn't seem to be usable as a full {{{as}}} substitute (or at least i've failed to figure out how to make that work). Thus, the only solution that is *robust* is to directly generate the object code from the C code or something similar. '''additionally ''', to restate nathan howell's remark, this is problematical even if the end user user isn't explicitly using AVX intrinsics, because gcc/clang will at the very least use the AVX instructions for scalar arithmetic on hardware that supports it (and thats even ignoring auto-vectorization). Likewise, when the assembly step isn't needed / useful, such as when (as in this code) i might be telling ghc -fllvm ( i don't have that in the example cabal, but would simple by adding a {{{ ghc-options: -fllvm }}} entry in the cabal after all) and theres definitely no reason to have the .s step in that case. does that help? -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/7922#comment:9 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler