[DebugInfo] Fix ARM/AArch64 prologue_end position. Related to D11268.

[oota-llvm.git] / lib / Target / X86 / X86FrameLowering.cpp

diff --git a/lib/Target/X86/X86FrameLowering.cpp b/lib/Target/X86/X86FrameLowering.cpp
index ae4cc77fcc949b47e1013006d15a349fa4d47bbc..be6cec6fa59b2c274e05aea63839cd4668d3f0a0 100644 (file)
--- a/lib/Target/X86/X86FrameLowering.cpp
+++ b/lib/Target/X86/X86FrameLowering.cpp
@@ -637,12 +637,15 @@ void X86FrameLowering::emitPrologue(MachineFunction &MF,
   unsigned FramePtr = TRI->getFrameRegister(MF);
   const unsigned MachineFramePtr =
       STI.isTarget64BitILP32()
-          ? getX86SubSuperRegister(FramePtr, MVT::i64, false)
-          : FramePtr;
-  unsigned BasePtr = TRI->getBaseRegister();
-  DebugLoc DL;
-
-  // Add RETADDR move area to callee saved frame size.
+          ? getX86SubSuperRegister(FramePtr, MVT::i64, false)\r
+          : FramePtr;\r
+  unsigned BasePtr = TRI->getBaseRegister();\r
+  \r
+  // Debug location must be unknown since the first debug location is used\r
+  // to determine the end of the prologue.\r
+  DebugLoc DL;\r
+\r
+  // Add RETADDR move area to callee saved frame size.\r
   int TailCallReturnAddrDelta = X86FI->getTCReturnAddrDelta();
   if (TailCallReturnAddrDelta && IsWin64Prologue)
     report_fatal_error("Can't handle guaranteed tail call under win64 yet");