diff options
| -rw-r--r-- | include/llvm/Target/MRegisterInfo.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/llvm/Target/MRegisterInfo.h b/include/llvm/Target/MRegisterInfo.h index 2db4f20..4b9389a 100644 --- a/include/llvm/Target/MRegisterInfo.h +++ b/include/llvm/Target/MRegisterInfo.h @@ -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 |