GlobalISel: legalize va_arg on AArch64.

Uses a Custom implementation because the slot sizes being a multiple of the
pointer size isn't really universal, even for the architectures that do have a
simple "void *" va_list.

llvm-svn: 295255

1 files changed, 7 insertions, 0 deletions

diff --git a/llvm/lib/CodeGen/GlobalISel/LegalizerInfo.cpp b/llvm/lib/CodeGen/GlobalISel/LegalizerInfo.cpp
index e757f2587ac..75c54c23872 100644
--- a/llvm/lib/CodeGen/GlobalISel/LegalizerInfo.cpp
+++ b/llvm/lib/CodeGen/GlobalISel/LegalizerInfo.cpp
@@ -161,6 +161,7 @@ LLT LegalizerInfo::findLegalType(const InstrAspect &Aspect,
   case Legal:
   case Lower:
   case Libcall:
+  case Custom:
     return Aspect.Type;
   case NarrowScalar: {
     return findLegalType(Aspect,
@@ -181,3 +182,9 @@ LLT LegalizerInfo::findLegalType(const InstrAspect &Aspect,
   }
   }
 }
+
+bool LegalizerInfo::legalizeCustom(MachineInstr &MI,
+                                   MachineRegisterInfo &MRI,
+                                   MachineIRBuilder &MIRBuilder) const {
+  return false;
+}