From b9e6b2c215d0a7930ad160b054bc86353da4a517 Mon Sep 17 00:00:00 2001
From: Ken Dyck <kd@kendyck.com>
Date: Sun, 24 Apr 2011 10:13:17 +0000
Subject: [PATCH] Convert AccessInfo::AccessAlignment to CharUnits. No change
 in functionality intended.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130087 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/CGExpr.cpp                | 12 ++++++------
 lib/CodeGen/CGRecordLayout.h          |  2 +-
 lib/CodeGen/CGRecordLayoutBuilder.cpp |  5 +++--
 3 files changed, 10 insertions(+), 9 deletions(-)

diff --git a/lib/CodeGen/CGExpr.cpp b/lib/CodeGen/CGExpr.cpp
index 892e9a3458..719403d668 100644
--- a/lib/CodeGen/CGExpr.cpp
+++ b/lib/CodeGen/CGExpr.cpp
@@ -740,8 +740,8 @@ RValue CodeGenFunction::EmitLoadOfBitfieldLValue(LValue LV,
 
     // Perform the load.
     llvm::LoadInst *Load = Builder.CreateLoad(Ptr, LV.isVolatileQualified());
-    if (AI.AccessAlignment)
-      Load->setAlignment(AI.AccessAlignment);
+    if (!AI.AccessAlignment.isZero())
+      Load->setAlignment(AI.AccessAlignment.getQuantity());
 
     // Shift out unused low bits and mask out unused high bits.
     llvm::Value *Val = Load;
@@ -964,8 +964,8 @@ void CodeGenFunction::EmitStoreThroughBitfieldLValue(RValue Src, LValue Dst,
     // If necessary, load and OR in bits that are outside of the bit-field.
     if (AI.TargetBitWidth != AI.AccessWidth) {
       llvm::LoadInst *Load = Builder.CreateLoad(Ptr, Dst.isVolatileQualified());
-      if (AI.AccessAlignment)
-        Load->setAlignment(AI.AccessAlignment);
+      if (!AI.AccessAlignment.isZero())
+        Load->setAlignment(AI.AccessAlignment.getQuantity());
 
       // Compute the mask for zeroing the bits that are part of the bit-field.
       llvm::APInt InvMask =
@@ -979,8 +979,8 @@ void CodeGenFunction::EmitStoreThroughBitfieldLValue(RValue Src, LValue Dst,
     // Write the value.
     llvm::StoreInst *Store = Builder.CreateStore(Val, Ptr,
                                                  Dst.isVolatileQualified());
-    if (AI.AccessAlignment)
-      Store->setAlignment(AI.AccessAlignment);
+    if (!AI.AccessAlignment.isZero())
+      Store->setAlignment(AI.AccessAlignment.getQuantity());
   }
 }
 
diff --git a/lib/CodeGen/CGRecordLayout.h b/lib/CodeGen/CGRecordLayout.h
index 245e74ce76..6d9fc0589e 100644
--- a/lib/CodeGen/CGRecordLayout.h
+++ b/lib/CodeGen/CGRecordLayout.h
@@ -69,7 +69,7 @@ public:
     // FIXME: Remove use of 0 to encode default, instead have IRgen do the right
     // thing when it generates the code, if avoiding align directives is
     // desired.
-    unsigned AccessAlignment;
+    CharUnits AccessAlignment;
 
     /// Offset for the target value.
     unsigned TargetBitOffset;
diff --git a/lib/CodeGen/CGRecordLayoutBuilder.cpp b/lib/CodeGen/CGRecordLayoutBuilder.cpp
index 7f52e31068..4f5a23c24b 100644
--- a/lib/CodeGen/CGRecordLayoutBuilder.cpp
+++ b/lib/CodeGen/CGRecordLayoutBuilder.cpp
@@ -316,7 +316,8 @@ CGBitFieldInfo CGBitFieldInfo::MakeInfo(CodeGenTypes &Types,
     }
     AI.FieldBitStart = AccessBitsInFieldStart - AccessStart;
     AI.AccessWidth = AccessWidth;
-    AI.AccessAlignment = llvm::MinAlign(ContainingTypeAlign, AccessStart) / 8;
+    AI.AccessAlignment = Types.getContext().toCharUnitsFromBits(
+        llvm::MinAlign(ContainingTypeAlign, AccessStart));
     AI.TargetBitOffset = AccessedTargetBits;
     AI.TargetBitWidth = AccessBitsInFieldSize;
 
@@ -1042,7 +1043,7 @@ void CGBitFieldInfo::print(llvm::raw_ostream &OS) const {
          << " FieldBitStart:" << AI.FieldBitStart
          << " AccessWidth:" << AI.AccessWidth << "\n";
       OS.indent(8 + strlen("<AccessInfo"));
-      OS << " AccessAlignment:" << AI.AccessAlignment
+      OS << " AccessAlignment:" << AI.AccessAlignment.getQuantity()
          << " TargetBitOffset:" << AI.TargetBitOffset
          << " TargetBitWidth:" << AI.TargetBitWidth
          << ">\n";
-- 
2.40.0