commit 9da9934e27dfb48de77b80a3e20ed2d869b52024
author Jakub Staszak <jstaszak@apple.com> Wed Jul 06 18:22:43 2011 +0000
committer Jakub Staszak <jstaszak@apple.com> Wed Jul 06 18:22:43 2011 +0000
tree 711368e52d6596eeb3273012758fe07e87213687
parent d7c7e2ff7d3305e4bc5634902ec4b8406e9cefca

Introduce "expect" intrinsic instructions.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134516 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp

diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
index ea59ca1..fc8f0d2 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -4771,6 +4771,13 @@
   case Intrinsic::flt_rounds:
     setValue(&I, DAG.getNode(ISD::FLT_ROUNDS_, dl, MVT::i32));
     return 0;
+
+  case Intrinsic::expect: {
+    // Just replace __builtin_expect(exp, c) with EXP.
+    setValue(&I, getValue(I.getArgOperand(0)));
+    return 0;
+  }
+
   case Intrinsic::trap: {
     StringRef TrapFuncName = getTrapFunctionName();
     if (TrapFuncName.empty()) {