//===----------------------------------------------------------------------===//
#include "llvm/IR/Function.h"
+#include "llvm/IR/Module.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
+#include "llvm/Target/TargetFrameLowering.h"
#include "llvm/Target/TargetOptions.h"
+#include "llvm/Target/TargetSubtargetInfo.h"
using namespace llvm;
/// DisableFramePointerElim - This returns true if frame pointer elimination
/// optimization should be disabled for the given machine function.
bool TargetOptions::DisableFramePointerElim(const MachineFunction &MF) const {
- // Check to see if we should eliminate non-leaf frame pointers and then
- // check to see if we should eliminate all frame pointers.
- if (MF.getFunction()->hasFnAttribute("no-frame-pointer-elim-non-leaf") &&
- !NoFramePointerElim) {
- const MachineFrameInfo *MFI = MF.getFrameInfo();
- return MFI->hasCalls();
- }
+ // Check to see if we should eliminate all frame pointers.
+ if (MF.getSubtarget().getFrameLowering()->noFramePointerElim(MF))
+ return true;
+
+ // Check to see if we should eliminate non-leaf frame pointers.
+ if (MF.getFunction()->hasFnAttribute("no-frame-pointer-elim-non-leaf"))
+ return MF.getFrameInfo()->hasCalls();
- return NoFramePointerElim;
+ return false;
}
/// LessPreciseFPMAD - This flag return true when -enable-fp-mad option
}
-void llvm::setFunctionAttributes(StringRef CPU, StringRef Features, Module &M) {
+void llvm::setFunctionAttributes(StringRef CPU, StringRef Features,
+ const TargetOptions &Options, Module &M,
+ bool AlwaysRecordAttrs) {
for (auto &F : M) {
auto &Ctx = F.getContext();
AttributeSet Attrs = F.getAttributes(), NewAttrs;
NewAttrs = NewAttrs.addAttribute(Ctx, AttributeSet::FunctionIndex,
"target-features", Features);
+ if (Options.NoFramePointerElimOverride || AlwaysRecordAttrs)
+ NewAttrs = NewAttrs.addAttribute(
+ Ctx, AttributeSet::FunctionIndex, "no-frame-pointer-elim",
+ Options.NoFramePointerElim ? "true" : "false");
+
// Let NewAttrs override Attrs.
NewAttrs = Attrs.addAttributes(Ctx, AttributeSet::FunctionIndex, NewAttrs);
F.setAttributes(NewAttrs);