Remove floating point killer pass. This is now implemented in the

instruction selector by adding a new pseudo-instruction
FP_REG_KILL. This instruction implicitly defines all x86 fp registers
and is a terminator so that passes which add machine code at the end
of basic blocks (like phi elimination) do not add instructions between
it and the branch or return instruction.

llvm-svn: 10562

1 files changed, 0 insertions, 10 deletions

diff --git a/llvm/lib/Target/X86/X86TargetMachine.cpp b/llvm/lib/Target/X86/X86TargetMachine.cpp
index a56e35f4d6f..8440838fbfa 100644
--- a/llvm/lib/Target/X86/X86TargetMachine.cpp
+++ b/llvm/lib/Target/X86/X86TargetMachine.cpp
@@ -76,11 +76,6 @@ bool X86TargetMachine::addPassesToEmitAssembly(PassManager &PM,
   if (PrintCode)
     PM.add(createMachineFunctionPrinterPass());
 
-  // kill floating point registers at the end of basic blocks. this is
-  // done because the floating point register stackifier cannot handle
-  // floating point regs that are live across basic blocks.
-  //PM.add(createX86FloatingPointKillerPass());
-
   // Perform register allocation to convert to a concrete x86 representation
   PM.add(createRegisterAllocator());
 
@@ -138,11 +133,6 @@ void X86JITInfo::addPassesToJITCompile(FunctionPassManager &PM) {
   if (PrintCode)
     PM.add(createMachineFunctionPrinterPass());
 
-  // kill floating point registers at the end of basic blocks. this is
-  // done because the floating point register stackifier cannot handle
-  // floating point regs that are live across basic blocks.
-  //PM.add(createX86FloatingPointKillerPass());
-
   // Perform register allocation to convert to a concrete x86 representation
   PM.add(createRegisterAllocator());