Adjust the MaxAlignment for the special register scavenging spill slot.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47452 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/PrologEpilogInserter.cpp b/lib/CodeGen/PrologEpilogInserter.cpp
index f237cbe..1fec4c9 100644 (file)
--- a/lib/CodeGen/PrologEpilogInserter.cpp
+++ b/lib/CodeGen/PrologEpilogInserter.cpp
@@ -438,6 +438,9 @@ void PEI::calculateFrameObjectOffsets(MachineFunction &Fn) {
         Offset += FFI->getObjectSize(SFI);
 
       unsigned Align = FFI->getObjectAlignment(SFI);
+      // If the alignment of this object is greater than that of the
+      // stack, then increase the stack alignment to match.
+      MaxAlign = std::max(MaxAlign, Align);
       // Adjust to alignment boundary
       Offset = (Offset+Align-1)/Align*Align;