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Cache the Function dependent subtarget on the MachineFunction.

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As preparation for removing the getSubtargetImpl() call from
TargetMachine go ahead and flip the switch on caching the function
dependent subtarget and remove the bare getSubtargetImpl call
from the X86 port. As part of this add a few tests that show we
can generate code and assemble on X86 based on features/cpu on
the Function.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@232879 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Christopher
2015-03-21 03:13:10 +00:00
parent 773e6614fb
commit 6f125f52d3
4 changed files with 108 additions and 2 deletions
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2
lib/CodeGen/MachineFunction.cpp
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@ -54,7 +54,7 @@ void ilist_traits<MachineBasicBlock>::deleteNode(MachineBasicBlock *MBB) {
MachineFunction::MachineFunction(const Function *F, const TargetMachine &TM,
unsigned FunctionNum, MachineModuleInfo &mmi)
: Fn(F), Target(TM), STI(TM.getSubtargetImpl()), Ctx(mmi.getContext()),
: Fn(F), Target(TM), STI(TM.getSubtargetImpl(*F)), Ctx(mmi.getContext()),
MMI(mmi) {
if (STI->getRegisterInfo())
RegInfo = new (Allocator) MachineRegisterInfo(this);