https://bugs.llvm.org/show_bug.cgi?id=32579
Bug ID: 32579
Summary: endless loop in DAGCombiner when compiling Firefox
Product: new-bugs
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: new bugs
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
% clang++ -c -O3 -std=gnu++11 -w -fPIC -fno-strict-aliasing -ffunction-sections
-fdata-sections -fno-exceptions -fno-strict-aliasing -fno-rtti -fno-exceptions
nsContentUtils.ii
perf shows:
Overhead Shared Object Symbol
31.90% libLLVMSupport.so.5.0.0svn [.]
llvm::SmallPtrSetImplBase::FindBucketFor
25.40% libLLVMSelectionDAG.so.5.0.0svn [.] (anonymous
namespace)::DAGCombiner::MergeConsecutiveStores
18.80% libLLVMSupport.so.5.0.0svn [.]
llvm::SmallPtrSetImplBase::insert_imp_big
4.85% libLLVMSupport.so.5.0.0svn [.]
llvm::SmallPtrSetImplBase::Grow
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