From c17ea93ed516d5c7d03a8d5c7fc470a0f254b58a Mon Sep 17 00:00:00 2001
From: Robert Lytton <robert@xmos.com>
Date: Tue, 12 Nov 2013 10:11:05 +0000
Subject: [PATCH] XCore target: return error for unsupported alignment

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194463 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/XCore/XCoreFrameLowering.cpp | 4 ++++
 test/CodeGen/XCore/alignment.ll         | 9 +++++++++
 2 files changed, 13 insertions(+)
 create mode 100644 test/CodeGen/XCore/alignment.ll

diff --git a/lib/Target/XCore/XCoreFrameLowering.cpp b/lib/Target/XCore/XCoreFrameLowering.cpp
index c60259d13f2..d4075e073bd 100644
--- a/lib/Target/XCore/XCoreFrameLowering.cpp
+++ b/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();
 
diff --git a/test/CodeGen/XCore/alignment.ll b/test/CodeGen/XCore/alignment.ll
new file mode 100644
index 00000000000..28bdf3b7420
--- /dev/null
+++ b/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
+}
+
-- 
2.34.1