From 8a25ef92fb3af998124a1d9770fb7ef7dec84401 Mon Sep 17 00:00:00 2001
From: Peter Zotov <whitequark@whitequark.org>
Date: Wed, 5 Mar 2014 05:05:34 +0000
Subject: [PATCH] [C API] Implement LLVM{Get,Set}Alignment for AllocaInst.

Patch by Manuel Jacob.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202936 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/llvm-c/Core.h |  2 ++
 lib/IR/Core.cpp       | 10 ++++++++--
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/include/llvm-c/Core.h b/include/llvm-c/Core.h
index af1e01d8e1b..437023bfba6 100644
--- a/include/llvm-c/Core.h
+++ b/include/llvm-c/Core.h
@@ -1707,6 +1707,7 @@ void LLVMSetDLLStorageClass(LLVMValueRef Global, LLVMDLLStorageClass Class);
 
 /**
  * Obtain the preferred alignment of the value.
+ * @see llvm::AllocaInst::getAlignment()
  * @see llvm::LoadInst::getAlignment()
  * @see llvm::StoreInst::getAlignment()
  * @see llvm::GlobalValue::getAlignment()
@@ -1715,6 +1716,7 @@ unsigned LLVMGetAlignment(LLVMValueRef V);
 
 /**
  * Set the preferred alignment of the value.
+ * @see llvm::AllocaInst::setAlignment()
  * @see llvm::LoadInst::setAlignment()
  * @see llvm::StoreInst::setAlignment()
  * @see llvm::GlobalValue::setAlignment()
diff --git a/lib/IR/Core.cpp b/lib/IR/Core.cpp
index c78ddae60be..f63263fd1f5 100644
--- a/lib/IR/Core.cpp
+++ b/lib/IR/Core.cpp
@@ -1268,24 +1268,30 @@ unsigned LLVMGetAlignment(LLVMValueRef V) {
   Value *P = unwrap<Value>(V);
   if (GlobalValue *GV = dyn_cast<GlobalValue>(P))
     return GV->getAlignment();
+  if (AllocaInst *AI = dyn_cast<AllocaInst>(P))
+    return AI->getAlignment();
   if (LoadInst *LI = dyn_cast<LoadInst>(P))
     return LI->getAlignment();
   if (StoreInst *SI = dyn_cast<StoreInst>(P))
     return SI->getAlignment();
 
-  llvm_unreachable("only GlobalValue, LoadInst and StoreInst have alignment");
+  llvm_unreachable(
+      "only GlobalValue, AllocaInst, LoadInst and StoreInst have alignment");
 }
 
 void LLVMSetAlignment(LLVMValueRef V, unsigned Bytes) {
   Value *P = unwrap<Value>(V);
   if (GlobalValue *GV = dyn_cast<GlobalValue>(P))
     GV->setAlignment(Bytes);
+  else if (AllocaInst *AI = dyn_cast<AllocaInst>(P))
+    AI->setAlignment(Bytes);
   else if (LoadInst *LI = dyn_cast<LoadInst>(P))
     LI->setAlignment(Bytes);
   else if (StoreInst *SI = dyn_cast<StoreInst>(P))
     SI->setAlignment(Bytes);
   else
-    llvm_unreachable("only GlobalValue, LoadInst and StoreInst have alignment");
+    llvm_unreachable(
+        "only GlobalValue, AllocaInst, LoadInst and StoreInst have alignment");
 }
 
 /*--.. Operations on global variables ......................................--*/