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Added hook hasReservedCallFrame(). It returns true if the call frame is

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included as part of the stack frame.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36606 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2007-05-01 00:47:46 +00:00
parent 43d44f036c
commit 14f1dd120f
1 changed files with 9 additions and 0 deletions
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9
include/llvm/Target/MRegisterInfo.h
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@ -451,6 +451,15 @@ public:
/// variable sized allocas or if frame pointer elimination is disabled.
virtual bool hasFP(const MachineFunction &MF) const = 0;
// hasReservedCallFrame - Under normal circumstances, when a frame pointer is
// not required, we reserve argument space for call sites in the function
// immediately on entry to the current function. This eliminates the need for
// add/sub sp brackets around call sites. Returns true if the call frame is
// included as part of the stack frame.
virtual bool hasReservedCallFrame(MachineFunction &MF) const {
return !hasFP(MF);
}
/// getCallFrameSetup/DestroyOpcode - These methods return the opcode of the
/// frame setup/destroy instructions if they exist (-1 otherwise). Some
/// targets use pseudo instructions in order to abstract away the difference