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  1. Jul 09, 2009
  2. Jul 08, 2009
    • Evan Cheng's avatar
      Change how so_imm and t2_so_imm are handled. At instruction selection time,... · e3a53c44
      Evan Cheng authored
      Change how so_imm and t2_so_imm are handled. At instruction selection time, the immediates are no longer encoded in the imm8 + rot format, that are left as it is. The encoding is now done in ams printing and code emission time instead.
      
      llvm-svn: 75048
      e3a53c44
    • Bill Wendling's avatar
      Recommit r74952 with a bug fix: · 0c9f367d
      Bill Wendling authored
      DWARF requires frame moves be specified at specific times. If you have a
      prologue like this:
      
      __Z3fooi:
      Leh_func_begin1:
      LBB1_0: ## entry
             pushl   %ebp
      Llabel1:
             movl    %esp, %ebp
      Llabel2:
             pushl   %esi
      Llabel3:
             subl    $20, %esp
             call    "L1$pb"
      "L1$pb":
             popl    %esi
      
      The "pushl %ebp" needs a table entry specifying the offset. The "movl %esp,
      %ebp" makes %ebp the new stack frame register, so that needs to be specified in
      DWARF. And "pushl %esi" saves the callee-saved %esi register, which also needs
      to be specified in DWARF.
      
      Before, all of this logic was in one method. This didn't work too well, because
      as you can see there are multiple FDE line entries that need to be created.
      
      This fix creates the "MachineMove" objects directly when they're needed; instead
      of waiting until the end, and losing information.
      
      There is some ugliness where we generate code like this:
      
      
      LBB22_0:	## entry
      	pushl	%ebp
      Llabel280:
      	movl	%esp, %ebp
      Llabel281:
      Llabel284:
      	pushl	%ebp  <----------
      	pushl	%ebx
      	pushl	%edi
      	pushl	%esi
      Llabel282:
      	subl	$328, %esp
      
      Notice the extra "pushl %ebp". If we generate a "machine move" instruction in
      the FDE for that pushl, the linker may get very confused about what value %ebp
      should have when exitting the function. I.e., it'll give it the value %esp
      instead of the %ebp value from the first "pushl". Not to mention that, in this
      case, %ebp isn't modified in the function (that's a separate bug). I put a small
      hack in to get it to work. It might be the only solution, but should be
      revisited once the above case is fixed.
      
      llvm-svn: 75047
      0c9f367d
    • Torok Edwin's avatar
      Missed an exit during the conversion. · f8d479c1
      Torok Edwin authored
      Will convert assert(0) that don't have abort() to LLVM_UNREACHABLE in a later
      commit.
      
      llvm-svn: 75045
      f8d479c1
    • Torok Edwin's avatar
      Implement changes from Chris's feedback. · fb8d6d5b
      Torok Edwin authored
      Finish converting lib/Target.
      
      llvm-svn: 75043
      fb8d6d5b
    • Bob Wilson's avatar
      Implement NEON vst1 instruction. · 1d298fd7
      Bob Wilson authored
      llvm-svn: 75037
      1d298fd7
    • David Goodwin's avatar
      Generalize opcode selection in ARMBaseRegisterInfo. · 03ab0bbb
      David Goodwin authored
      llvm-svn: 75036
      03ab0bbb
    • Xerxes Ranby's avatar
      Fix cmake build. · b009980f
      Xerxes Ranby authored
      Added ARMBaseRegisterInfo.cpp to lib/Target/ARM/CMakeLists.txt
      
      llvm-svn: 75035
      b009980f
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