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  29. Dec 05, 2008
    • Chris Lattner's avatar
      Make a few major changes to memdep and its clients: · 0e3d6337
      Chris Lattner authored
      1. Merge the 'None' result into 'Normal', making loads
         and stores return their dependencies on allocations as Normal.
      2. Split the 'Normal' result into 'Clobber' and 'Def' to
         distinguish between the cases when memdep knows the value is
         produced from when we just know if may be changed.
      3. Move some of the logic for determining whether readonly calls
         are CSEs into memdep instead of it being in GVN.  This still
         leaves verification that the arguments are hte same to GVN to
         let it know about value equivalences in different contexts.
      4. Change memdep's call/call dependency analysis to use 
         getModRefInfo(CallSite,CallSite) instead of doing something 
         very weak.  This only really matters for things like DSA, but
         someday maybe we'll have some other decent context sensitive
         analyses :)
      5. This reimplements the guts of memdep to handle the new results.
      6. This simplifies GVN significantly:
         a) readonly call CSE is slightly simpler
         b) I eliminated the "getDependencyFrom" chaining for load 
            elimination and load CSE doesn't have to worry about 
            volatile (they are always clobbers) anymore.
         c) GVN no longer does any 'lastLoad' caching, leaving it to 
            memdep.
      7. The logic in DSE is simplified a bit and sped up.  A potentially
         unsafe case was eliminated.
      
      llvm-svn: 60607
      0e3d6337
  30. Nov 30, 2008
  31. Nov 29, 2008
    • Chris Lattner's avatar
      Introduce and use a new MemDepResult class to hold the results of a memdep · 7f9c8a0f
      Chris Lattner authored
      query.  This makes it crystal clear what cases can escape from MemDep that
      the clients have to handle.  This also gives the clients a nice simplified
      interface to it that is easy to poke at.
      
      This patch also makes DepResultTy and MemoryDependenceAnalysis::DepType
      private, yay.
      
      llvm-svn: 60231
      7f9c8a0f
    • Chris Lattner's avatar
      Reimplement the internal abstraction used by MemDep in terms · de04e117
      Chris Lattner authored
      of a pointer/int pair instead of a manually bitmangled pointer.
      This forces clients to think a little more about checking the 
      appropriate pieces and will be useful for internal 
      implementation improvements later.
      
      I'm not particularly happy with this.  After going through this
      I don't think that the clients of memdep should be exposed to
      the internal type at all.  I'll fix this in a subsequent commit.
      
      This has no functionality change.
      
      llvm-svn: 60230
      de04e117
  32. Nov 21, 2008
    • Chris Lattner's avatar
      reapply Sanjiv's patch to genericize memcpy/memset/memmove to take an · dd708345
      Chris Lattner authored
      arbitrary integer width for the count.
      
      llvm-svn: 59823
      dd708345
    • Bill Wendling's avatar
      Revert r59802. It was breaking the build of llvm-gcc: · 4bce2bff
      Bill Wendling authored
      g++ -m32 -c -g -DIN_GCC -W -Wall -Wwrite-strings -Wmissing-format-attribute -fno-common -mdynamic-no-pic -DHAVE_CONFIG_H -Wno-unused -DTARGET_NAME=\"i386-apple-darwin9.5.0\" -I. -I. -I../../llvm-gcc.src/gcc -I../../llvm-gcc.src/gcc/. -I../../llvm-gcc.src/gcc/../include -I./../intl -I../../llvm-gcc.src/gcc/../libcpp/include  -I../../llvm-gcc.src/gcc/../libdecnumber -I../libdecnumber -I/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.obj/include -I/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.src/include -DENABLE_LLVM -I/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.obj/../llvm.src/include  -D_DEBUG  -D_GNU_SOURCE -D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS   -I. -I. -I../../llvm-gcc.src/gcc -I../../llvm-gcc.src/gcc/. -I../../llvm-gcc.src/gcc/../include -I./../intl -I../../llvm-gcc.src/gcc/../libcpp/include  -I../../llvm-gcc.src/gcc/../libdecnumber -I../libdecnumber -I/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.obj/include -I/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.src/include ../../llvm-gcc.src/gcc/llvm-types.cpp -o llvm-types.o
      ../../llvm-gcc.src/gcc/llvm-convert.cpp: In member function 'void TreeToLLVM::EmitMemCpy(llvm::Value*, llvm::Value*, llvm::Value*, unsigned int)':
      ../../llvm-gcc.src/gcc/llvm-convert.cpp:1496: error: 'memcpy_i32' is not a member of 'llvm::Intrinsic'
      ../../llvm-gcc.src/gcc/llvm-convert.cpp:1496: error: 'memcpy_i64' is not a member of 'llvm::Intrinsic'
      ../../llvm-gcc.src/gcc/llvm-convert.cpp: In member function 'void TreeToLLVM::EmitMemMove(llvm::Value*, llvm::Value*, llvm::Value*, unsigned int)':
      ../../llvm-gcc.src/gcc/llvm-convert.cpp:1512: error: 'memmove_i32' is not a member of 'llvm::Intrinsic'
      ../../llvm-gcc.src/gcc/llvm-convert.cpp:1512: error: 'memmove_i64' is not a member of 'llvm::Intrinsic'
      ../../llvm-gcc.src/gcc/llvm-convert.cpp: In member function 'void TreeToLLVM::EmitMemSet(llvm::Value*, llvm::Value*, llvm::Value*, unsigned int)':
      ../../llvm-gcc.src/gcc/llvm-convert.cpp:1528: error: 'memset_i32' is not a member of 'llvm::Intrinsic'
      ../../llvm-gcc.src/gcc/llvm-convert.cpp:1528: error: 'memset_i64' is not a member of 'llvm::Intrinsic'
      make[3]: *** [llvm-convert.o] Error 1
      make[3]: *** Waiting for unfinished jobs....
      rm fsf-funding.pod gcov.pod gfdl.pod cpp.pod gpl.pod gcc.pod
      make[2]: *** [all-stage1-gcc] Error 2
      make[1]: *** [stage1-bubble] Error 2
      make: *** [all] Error 2
      
      llvm-svn: 59809
      4bce2bff
    • Sanjiv Gupta's avatar
      Make mem[cpy,move,set] intrinsics overloaded. · 09a20376
      Sanjiv Gupta authored
      llvm-svn: 59802
      09a20376
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