commit 641bea117d2f5e68c11156b9eea1c9270825dfb9
author David Majnemer <david.majnemer@gmail.com> Fri Oct 18 08:03:43 2013 +0000
committer David Majnemer <david.majnemer@gmail.com> Fri Oct 18 08:03:43 2013 +0000
tree 2e190a23136c8a58efa5736d8f7bc2f9a3c2fbc4
parent 7a7fc90ba3419490c478174d78a3d1fb5373054d

CodeGen: Emit a libcall if the target doesn't support 16-byte wide atomics

There are targets that support i128 sized scalars but cannot emit
instructions that modify them directly.  The proper thing to do is to
emit a libcall.

This fixes PR17481.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192957 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/SelectionDAG/LegalizeDAG.cpp

diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index d805d2c..aa8caed 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -2661,6 +2661,7 @@
     case MVT::i16: LC = RTLIB::SYNC_LOCK_TEST_AND_SET_2; break;
     case MVT::i32: LC = RTLIB::SYNC_LOCK_TEST_AND_SET_4; break;
     case MVT::i64: LC = RTLIB::SYNC_LOCK_TEST_AND_SET_8; break;
+    case MVT::i128:LC = RTLIB::SYNC_LOCK_TEST_AND_SET_16;break;
     }
     break;
   case ISD::ATOMIC_CMP_SWAP:
@@ -2670,6 +2671,7 @@
     case MVT::i16: LC = RTLIB::SYNC_VAL_COMPARE_AND_SWAP_2; break;
     case MVT::i32: LC = RTLIB::SYNC_VAL_COMPARE_AND_SWAP_4; break;
     case MVT::i64: LC = RTLIB::SYNC_VAL_COMPARE_AND_SWAP_8; break;
+    case MVT::i128:LC = RTLIB::SYNC_VAL_COMPARE_AND_SWAP_16;break;
     }
     break;
   case ISD::ATOMIC_LOAD_ADD:
@@ -2679,6 +2681,7 @@
     case MVT::i16: LC = RTLIB::SYNC_FETCH_AND_ADD_2; break;
     case MVT::i32: LC = RTLIB::SYNC_FETCH_AND_ADD_4; break;
     case MVT::i64: LC = RTLIB::SYNC_FETCH_AND_ADD_8; break;
+    case MVT::i128:LC = RTLIB::SYNC_FETCH_AND_ADD_16;break;
     }
     break;
   case ISD::ATOMIC_LOAD_SUB:
@@ -2688,6 +2691,7 @@
     case MVT::i16: LC = RTLIB::SYNC_FETCH_AND_SUB_2; break;
     case MVT::i32: LC = RTLIB::SYNC_FETCH_AND_SUB_4; break;
     case MVT::i64: LC = RTLIB::SYNC_FETCH_AND_SUB_8; break;
+    case MVT::i128:LC = RTLIB::SYNC_FETCH_AND_SUB_16;break;
     }
     break;
   case ISD::ATOMIC_LOAD_AND:
@@ -2697,6 +2701,7 @@
     case MVT::i16: LC = RTLIB::SYNC_FETCH_AND_AND_2; break;
     case MVT::i32: LC = RTLIB::SYNC_FETCH_AND_AND_4; break;
     case MVT::i64: LC = RTLIB::SYNC_FETCH_AND_AND_8; break;
+    case MVT::i128:LC = RTLIB::SYNC_FETCH_AND_AND_16;break;
     }
     break;
   case ISD::ATOMIC_LOAD_OR:
@@ -2706,6 +2711,7 @@
     case MVT::i16: LC = RTLIB::SYNC_FETCH_AND_OR_2; break;
     case MVT::i32: LC = RTLIB::SYNC_FETCH_AND_OR_4; break;
     case MVT::i64: LC = RTLIB::SYNC_FETCH_AND_OR_8; break;
+    case MVT::i128:LC = RTLIB::SYNC_FETCH_AND_OR_16;break;
     }
     break;
   case ISD::ATOMIC_LOAD_XOR:
@@ -2715,6 +2721,7 @@
     case MVT::i16: LC = RTLIB::SYNC_FETCH_AND_XOR_2; break;
     case MVT::i32: LC = RTLIB::SYNC_FETCH_AND_XOR_4; break;
     case MVT::i64: LC = RTLIB::SYNC_FETCH_AND_XOR_8; break;
+    case MVT::i128:LC = RTLIB::SYNC_FETCH_AND_XOR_16;break;
     }
     break;
   case ISD::ATOMIC_LOAD_NAND:
@@ -2724,6 +2731,7 @@
     case MVT::i16: LC = RTLIB::SYNC_FETCH_AND_NAND_2; break;
     case MVT::i32: LC = RTLIB::SYNC_FETCH_AND_NAND_4; break;
     case MVT::i64: LC = RTLIB::SYNC_FETCH_AND_NAND_8; break;
+    case MVT::i128:LC = RTLIB::SYNC_FETCH_AND_NAND_16;break;
     }
     break;
   }