Revert "Divide the primitive size in bits by eight so the initial load's alignment...

This reverts commit r244155, as it was breaking the buildbots for too long.
Should be reapplied with proper fix.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@244205 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/AtomicExpandPass.cpp b/lib/CodeGen/AtomicExpandPass.cpp
index c10648c6e3bcf2cc4333701f7884f78867dabd8f..03b0ff32f15c3a9f61274a1e80bd631d400635ff 100644 (file)
--- a/lib/CodeGen/AtomicExpandPass.cpp
+++ b/lib/CodeGen/AtomicExpandPass.cpp
@@ -550,7 +550,7 @@ bool llvm::expandAtomicRMWToCmpXchg(AtomicRMWInst *AI,
   Builder.SetInsertPoint(BB);
   LoadInst *InitLoaded = Builder.CreateLoad(Addr);
   // Atomics require at least natural alignment.
-  InitLoaded->setAlignment(AI->getType()->getPrimitiveSizeInBits() / 8);
+  InitLoaded->setAlignment(AI->getType()->getPrimitiveSizeInBits());
   Builder.CreateBr(LoopBB);
 
   // Start the main loop block now that we've taken care of the preliminaries.

diff --git a/test/Transforms/AtomicExpand/expand-atomic-rmw-initial-load.ll b/test/Transforms/AtomicExpand/expand-atomic-rmw-initial-load.ll
deleted file mode 100644 (file)
index 197250e..0000000
--- a/test/Transforms/AtomicExpand/expand-atomic-rmw-initial-load.ll
+++ /dev/null
@@ -1,8 +0,0 @@
-; RUN: opt -S %s -atomic-expand -mtriple=i686-linux-gnu | FileCheck %s
-
-define i8 @test_initial_load(i8* %ptr, i8 %value) {
-  %res = atomicrmw nand i8* %ptr, i8 %value seq_cst
-  ret i8 %res
-}
-; CHECK-LABEL: @test_initial_load
-; CHECK-NEXT:    %1 = load i8, i8* %ptr, align 1