From d9bbe85943f6322e8fa1e85f72e53dd579c14a2f Mon Sep 17 00:00:00 2001
From: Guillaume Chatelet <gchatelet@google.com>
Date: Mon, 27 Jul 2020 08:16:28 +0000
Subject: [Alignment][NFC] Update Bitcodewriter to use Align

Differential Revision: https://reviews.llvm.org/D83533
---
 llvm/lib/Bitcode/Reader/BitcodeReader.cpp | 20 +++++++++-----------
 1 file changed, 9 insertions(+), 11 deletions(-)

(limited to 'llvm/lib/Bitcode/Reader/BitcodeReader.cpp')

diff --git a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
index 9632b57..908e70b2 100644
--- a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
+++ b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
@@ -20,8 +20,9 @@
 #include "llvm/ADT/StringRef.h"
 #include "llvm/ADT/Triple.h"
 #include "llvm/ADT/Twine.h"
-#include "llvm/Bitstream/BitstreamReader.h"
 #include "llvm/Bitcode/LLVMBitCodes.h"
+#include "llvm/Bitstream/BitcodeCommon.h"
+#include "llvm/Bitstream/BitstreamReader.h"
 #include "llvm/Config/llvm-config.h"
 #include "llvm/IR/Argument.h"
 #include "llvm/IR/Attributes.h"
@@ -4813,17 +4814,13 @@ Error BitcodeReader::parseFunctionBody(Function *F) {
     case bitc::FUNC_CODE_INST_ALLOCA: { // ALLOCA: [instty, opty, op, align]
       if (Record.size() != 4)
         return error("Invalid record");
-      uint64_t AlignRecord = Record[3];
-      const uint64_t InAllocaMask = uint64_t(1) << 5;
-      const uint64_t ExplicitTypeMask = uint64_t(1) << 6;
-      const uint64_t SwiftErrorMask = uint64_t(1) << 7;
-      const uint64_t FlagMask = InAllocaMask | ExplicitTypeMask |
-                                SwiftErrorMask;
-      bool InAlloca = AlignRecord & InAllocaMask;
-      bool SwiftError = AlignRecord & SwiftErrorMask;
+      using APV = AllocaPackedValues;
+      const uint64_t Rec = Record[3];
+      const bool InAlloca = Bitfield::get<APV::UsedWithInAlloca>(Rec);
+      const bool SwiftError = Bitfield::get<APV::SwiftError>(Rec);
       FullTy = getFullyStructuredTypeByID(Record[0]);
       Type *Ty = flattenPointerTypes(FullTy);
-      if ((AlignRecord & ExplicitTypeMask) == 0) {
+      if (!Bitfield::get<APV::ExplicitType>(Rec)) {
         auto *PTy = dyn_cast_or_null<PointerType>(Ty);
         if (!PTy)
           return error("Old-style alloca with a non-pointer type");
@@ -4832,7 +4829,8 @@ Error BitcodeReader::parseFunctionBody(Function *F) {
       Type *OpTy = getTypeByID(Record[1]);
       Value *Size = getFnValueByID(Record[2], OpTy);
       MaybeAlign Align;
-      if (Error Err = parseAlignmentValue(AlignRecord & ~FlagMask, Align)) {
+      if (Error Err =
+              parseAlignmentValue(Bitfield::get<APV::Align>(Rec), Align)) {
         return Err;
       }
       if (!Ty || !Size)
-- 
cgit v1.1