commit 857efb0880dbfbb0f52f401f18f9c3717f6cc276
author Richard Smith <richard-llvm@metafoo.co.uk> Mon Nov 07 16:47:20 2016 +0000
committer Richard Smith <richard-llvm@metafoo.co.uk> Mon Nov 07 16:47:20 2016 +0000
tree 92b07cd2cc0fa9c8eadf213431fe1fe59e40a68f
parent 314cbf7a3bc173921756d540e84802f585bbf1de

Add -O0 support for @llvm.invariant.group.barrier by discarding it if it gets to ISel.

Differential Revision: https://reviews.llvm.org/D26292

llvm-svn: 286119

llvm/lib/CodeGen/SelectionDAG/FastISel.cpp

diff --git a/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp b/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp
index 4ca2249..452bb05 100644
--- a/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp
@@ -1216,6 +1216,7 @@
     updateValueMap(II, ResultReg);
     return true;
   }
+  case Intrinsic::invariant_group_barrier:
   case Intrinsic::expect: {
     unsigned ResultReg = getRegForValue(II->getArgOperand(0));
     if (!ResultReg)