XCore target: return error for unsupported alignment

llvm-svn: 194463

llvm/lib/Target/XCore/XCoreFrameLowering.cpp

@@ -93,6 +93,10 @@ void XCoreFrameLowering::emitPrologue(MachineFunction &MF) const {
   XCoreFunctionInfo *XFI = MF.getInfo<XCoreFunctionInfo>();
   DebugLoc dl = MBBI != MBB.end() ? MBBI->getDebugLoc() : DebugLoc();
 
+  if (MFI->getMaxAlignment() > getStackAlignment())
+    report_fatal_error("emitPrologue unsupported alignment: "
+                       + Twine(MFI->getMaxAlignment()));
+
   bool FP = hasFP(MF);
   const AttributeSet &PAL = MF.getFunction()->getAttributes();
 

llvm/test/CodeGen/XCore/alignment.ll

@@ -0,0 +1,9 @@
+; RUN: not llc < %s -march=xcore 2>&1 | FileCheck %s
+
+; CHECK: emitPrologue unsupported alignment: 8
+define void @f() nounwind {
+entry:
+  %BadAlignment = alloca i64, align 8
+  ret void
+}
+