[X86] Implement -mfentry
Summary: Insert calls to __fentry__ at function entry.
Reviewers: hfinkel, craig.topper
Subscribers: mgorny, llvm-commits
Differential Revision: https://reviews.llvm.org/D28000
llvm-svn: 293648
diff --git a/llvm/lib/Target/X86/X86AsmPrinter.h b/llvm/lib/Target/X86/X86AsmPrinter.h
index 6798253..bb15fd7 100644
--- a/llvm/lib/Target/X86/X86AsmPrinter.h
+++ b/llvm/lib/Target/X86/X86AsmPrinter.h
@@ -92,6 +92,8 @@
void LowerPATCHABLE_RET(const MachineInstr &MI, X86MCInstLower &MCIL);
void LowerPATCHABLE_TAIL_CALL(const MachineInstr &MI, X86MCInstLower &MCIL);
+ void LowerFENTRY_CALL(const MachineInstr &MI, X86MCInstLower &MCIL);
+
// Helper function that emits the XRay sleds we've collected for a particular
// function.
void EmitXRayTable();