Support for HiPE-compatible code emission, patch by Yiannis Tsiouris.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175457 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 8 insertions, 0 deletions

diff --git a/lib/CodeGen/PrologEpilogInserter.cpp b/lib/CodeGen/PrologEpilogInserter.cpp
index 954613d6f9..45e04a9c62 100644
--- a/lib/CodeGen/PrologEpilogInserter.cpp
+++ b/lib/CodeGen/PrologEpilogInserter.cpp
@@ -693,6 +693,14 @@ void PEI::insertPrologEpilogCode(MachineFunction &Fn) {
   // space in small chunks instead of one large contiguous block.
   if (Fn.getTarget().Options.EnableSegmentedStacks)
     TFI.adjustForSegmentedStacks(Fn);
+
+  // Emit additional code that is required to explicitly handle the stack in
+  // HiPE native code (if needed) when loaded in the Erlang/OTP runtime. The
+  // approach is rather similar to that of Segmented Stacks, but it uses a
+  // different conditional check and another BIF for allocating more stack
+  // space.
+  if (Fn.getFunction()->getCallingConv() == CallingConv::HiPE)
+    TFI.adjustForHiPEPrologue(Fn);
 }
 
 /// replaceFrameIndices - Replace all MO_FrameIndex operands with physical