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Add an option to disable spill fusing in the X86 backend

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llvm-svn: 11531
This commit is contained in:
Chris Lattner 2004-02-17 06:30:34 +00:00
parent d4b2f4ef32
commit a9493ad718
1 changed files with 5 additions and 0 deletions
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5
lib/Target/X86/X86RegisterInfo.cpp
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@ -31,6 +31,9 @@ namespace {
cl::opt<bool>
NoFPElim("disable-fp-elim",
cl::desc("Disable frame pointer elimination optimization"));
cl::opt<bool>
NoFusing("disable-spill-fusing",
cl::desc("Disable fusing of spill code into instructions"));
}
X86RegisterInfo::X86RegisterInfo()
@ -106,6 +109,8 @@ static MachineInstr *MakeRMIInst(unsigned Opcode, unsigned FrameIndex,
bool X86RegisterInfo::foldMemoryOperand(MachineBasicBlock::iterator &MI,
unsigned i, int FrameIndex) const {
if (NoFusing) return false;
/// FIXME: This should obviously be autogenerated by tablegen when patterns
/// are available!
MachineBasicBlock& MBB = *MI->getParent();