From 2c4f94363a02f482ddcfccc343978595a8a79438 Mon Sep 17 00:00:00 2001 From: Evan Cheng Date: Wed, 9 May 2007 21:49:47 +0000 Subject: [PATCH] Can't fold the bit_convert is the store is a truncating store. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36962 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index 290d621cf0e..744a474ba4e 100644 --- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -3422,8 +3422,8 @@ SDOperand DAGCombiner::visitSTORE(SDNode *N) { SDOperand Ptr = ST->getBasePtr(); // If this is a store of a bit convert, store the input value if the - // resultant store does not need a higher alignment than the original. - if (Value.getOpcode() == ISD::BIT_CONVERT) { + // resultant store does not need a higher alignment than the original. + if (Value.getOpcode() == ISD::BIT_CONVERT && !ST->isTruncatingStore()) { unsigned Align = ST->getAlignment(); MVT::ValueType SVT = Value.getOperand(0).getValueType(); unsigned OrigAlign = TLI.getTargetMachine().getTargetData()->