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  1. Feb 27, 2012
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  3. Feb 25, 2012
  4. Feb 24, 2012
    • Akira Hatanaka's avatar
      Add an option to use a virtual register as the global base register instead of · b049aef2
      Akira Hatanaka authored
      reserving a physical register ($gp or $28) for that purpose.
      
      This will completely eliminate loads that restore the value of $gp after every
      function call, if the register allocator assigns a callee-saved register, or
      eliminate unnecessary loads if it assigns a temporary register. 
      
      example:
      
      .cpload $25       // set $gp.
      ...
      .cprestore 16     // store $gp to stack slot 16($sp).
      ...
      jalr $25          // function call. clobbers $gp.
      lw $gp, 16($sp)   // not emitted if callee-saved reg is chosen.
      ...
      lw $2, 4($gp)
      ...
      jalr $25          // function call.
      lw $gp, 16($sp)   // not emitted if $gp is not live after this instruction.
      ...
      
      llvm-svn: 151402
      b049aef2
    • Benjamin Kramer's avatar
      Remove unused cl::opt, make another opt static. · 9fceb901
      Benjamin Kramer authored
      llvm-svn: 151398
      9fceb901
    • Jakob Stoklund Olesen's avatar
      Add missing static · 7f991428
      Jakob Stoklund Olesen authored
      llvm-svn: 151396
      7f991428
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