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Revert "[X86] Fix a variable name for r237977 so that it works with every compilers."

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Revert "[X86] Refactor the prologue emission to prepare for shrink-wrapping."

This reverts commit 6b3b93fc8b.
This reverts commit ab0b15dff8.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@238011 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Tamas Berghammer
2015-05-22 10:01:56 +00:00
parent d9a08b08ac
commit c189633586
7 changed files with 111 additions and 250 deletions
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20
lib/Target/X86/X86FrameLowering.h
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@@ -79,26 +79,6 @@ public:
MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI) const override;
/// Check the instruction before/after the passed instruction. If
/// it is an ADD/SUB/LEA instruction it is deleted argument and the
/// stack adjustment is returned as a positive value for ADD/LEA and
/// a negative for SUB.
static int mergeSPUpdates(MachineBasicBlock &MBB,
MachineBasicBlock::iterator &MBBI,
unsigned StackPtr, bool doMergeWithPrevious);
/// Emit a series of instructions to increment / decrement the stack
/// pointer by a constant value.
static void emitSPUpdate(MachineBasicBlock &MBB,
MachineBasicBlock::iterator &MBBI, unsigned StackPtr,
int64_t NumBytes, bool Is64BitTarget,
bool Is64BitStackPtr, bool UseLEA,
const TargetInstrInfo &TII,
const TargetRegisterInfo &TRI);
/// Check that LEA can be use on SP in a prologue sequence for \p MF.
bool useLEAForSPInProlog(const MachineFunction &MF) const;
private:
/// convertArgMovsToPushes - This method tries to convert a call sequence
/// that uses sub and mov instructions to put the argument onto the stack