commit 2806405bbbbc57fcb8891315353915437c51d8ea
author Craig Topper <craig.topper@intel.com> Sun Dec 09 18:02:40 2018 +0000
committer Craig Topper <craig.topper@intel.com> Sun Dec 09 18:02:40 2018 +0000
tree 642849ed4d5f85dc5022c422f2eb6030e3e4032b
parent b1f260ed6a66fcafb295676e0a37f26bdf01fa7c

[X86] Add some comments about when some X86 intrinsic autoupgrade code was added.

Someday we'd like to remove old autoupgrade code so it helps to annotate how long its been there so we don't have to go digging through commit history.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@348728 91177308-0d34-0410-b5e6-96231b3b80d8

lib/IR/AutoUpgrade.cpp

diff --git a/lib/IR/AutoUpgrade.cpp b/lib/IR/AutoUpgrade.cpp
index 10cb1ac..83fc478 100644
--- a/lib/IR/AutoUpgrade.cpp
+++ b/lib/IR/AutoUpgrade.cpp
@@ -382,20 +382,20 @@
     return true;
   }
 
-  if (Name == "addcarryx.u32")
+  if (Name == "addcarryx.u32") // Added in 8.0
     return UpgradeADCSBBIntrinsic(F, Intrinsic::x86_addcarryx_u32, NewFn);
-  if (Name == "addcarryx.u64")
+  if (Name == "addcarryx.u64") // Added in 8.0
     return UpgradeADCSBBIntrinsic(F, Intrinsic::x86_addcarryx_u64, NewFn);
-  if (Name == "addcarry.u32")
+  if (Name == "addcarry.u32") // Added in 8.0
     return UpgradeADCSBBIntrinsic(F, Intrinsic::x86_addcarry_u32, NewFn);
-  if (Name == "addcarry.u64")
+  if (Name == "addcarry.u64") // Added in 8.0
     return UpgradeADCSBBIntrinsic(F, Intrinsic::x86_addcarry_u64, NewFn);
-  if (Name == "subborrow.u32")
+  if (Name == "subborrow.u32") // Added in 8.0
     return UpgradeADCSBBIntrinsic(F, Intrinsic::x86_subborrow_u32, NewFn);
-  if (Name == "subborrow.u64")
+  if (Name == "subborrow.u64") // Added in 8.0
     return UpgradeADCSBBIntrinsic(F, Intrinsic::x86_subborrow_u64, NewFn);
 
-  if (Name == "rdtscp") {
+  if (Name == "rdtscp") { // Added in 8.0
     // If this intrinsic has 0 operands, it's the new version.
     if (F->getFunctionType()->getNumParams() == 0)
       return false;