[llvm] r320944 - Revert "Treat sret arguments as being dereferenceable in getPointerDereferenceableBytes()"

[Bjorn Steinbrink via llvm-commits]

Author: bsteinbr
Date: Sun Dec 17 07:16:51 2017
New Revision: 320944

URL: http://llvm.org/viewvc/llvm-project?rev=320944&view=rev
Log:
Revert "Treat sret arguments as being dereferenceable in getPointerDereferenceableBytes()"

This reverts commit 8b7a7660a3904b2088bc594311bcea2c651def08.

I didn't mean to commit this.

Modified:
    llvm/trunk/lib/IR/Value.cpp

Modified: llvm/trunk/lib/IR/Value.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/IR/Value.cpp?rev=320944&r1=320943&r2=320944&view=diff
==============================================================================
--- llvm/trunk/lib/IR/Value.cpp (original)
+++ llvm/trunk/lib/IR/Value.cpp Sun Dec 17 07:16:51 2017
@@ -627,10 +627,9 @@ uint64_t Value::getPointerDereferenceabl
   CanBeNull = false;
   if (const Argument *A = dyn_cast<Argument>(this)) {
     DerefBytes = A->getDereferenceableBytes();
-    if (DerefBytes == 0 && (A->hasByValAttr() || A->hasStructRetAttr())) {
+    if (DerefBytes == 0 && A->hasByValAttr()) {
       Type *PT = cast<PointerType>(A->getType())->getElementType();
-      if (PT->isSized())
-        DerefBytes = DL.getTypeStoreSize(PT);
+      DerefBytes = DL.getTypeStoreSize(PT);
     }
     if (DerefBytes == 0) {
       DerefBytes = A->getDereferenceableOrNullBytes();