commit 440a5f49133307745de7cc92a44d53088cf47c26
author Eli Friedman <eli.friedman@gmail.com> Mon Sep 23 23:38:39 2013 +0000
committer Eli Friedman <eli.friedman@gmail.com> Mon Sep 23 23:38:39 2013 +0000
tree 16609bea27dd8a9ceb5de768bfb600b242bdbb30
parent afa170f2cfa7e84e99559d0f1b3ceafec9c75de0

Add _mm_stream_si64 intrinsic.

While I'm here, also fix the alignment computation for the whole family of
intrinsics.

PR17298.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@191243 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/CGBuiltin.cpp

diff --git a/lib/CodeGen/CGBuiltin.cpp b/lib/CodeGen/CGBuiltin.cpp
index 4b4c8f4..d1a41cf 100644
--- a/lib/CodeGen/CGBuiltin.cpp
+++ b/lib/CodeGen/CGBuiltin.cpp
@@ -3249,7 +3249,8 @@
   case X86::BI__builtin_ia32_movntpd256:
   case X86::BI__builtin_ia32_movntdq:
   case X86::BI__builtin_ia32_movntdq256:
-  case X86::BI__builtin_ia32_movnti: {
+  case X86::BI__builtin_ia32_movnti:
+  case X86::BI__builtin_ia32_movnti64: {
     llvm::MDNode *Node = llvm::MDNode::get(getLLVMContext(),
                                            Builder.getInt32(1));
 
@@ -3259,7 +3260,16 @@
                                       "cast");
     StoreInst *SI = Builder.CreateStore(Ops[1], BC);
     SI->setMetadata(CGM.getModule().getMDKindID("nontemporal"), Node);
-    SI->setAlignment(16);
+
+    // If the operand is an integer, we can't assume alignment. Otherwise,
+    // assume natural alignment.
+    QualType ArgTy = E->getArg(1)->getType();
+    unsigned Align;
+    if (ArgTy->isIntegerType())
+      Align = 1;
+    else
+      Align = getContext().getTypeSizeInChars(ArgTy).getQuantity();
+    SI->setAlignment(Align);
     return SI;
   }
   // 3DNow!