[llvm-bugs] [Bug 42526] New: CGBuiltin.cpp - EmitX86BuiltinExpr - Value stored to 'Store' during its initialization is never read
via llvm-bugs
llvm-bugs at lists.llvm.org
Sat Jul 6 11:43:43 PDT 2019
https://bugs.llvm.org/show_bug.cgi?id=42526
Bug ID: 42526
Summary: CGBuiltin.cpp - EmitX86BuiltinExpr - Value stored to
'Store' during its initialization is never read
Product: libraries
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: Backend: X86
Assignee: unassignedbugs at nondot.org
Reporter: llvm-dev at redking.me.uk
CC: craig.topper at gmail.com, llvm-bugs at lists.llvm.org,
llvm-dev at redking.me.uk, pengfei.wang at intel.com,
spatel+llvm at rotateright.com
https://llvm.org/reports/scan-build/report-CGBuiltin.cpp-EmitX86BuiltinExpr-1814-1.html#EndPath
Value *Call = Builder.CreateCall(CGM.getIntrinsic(ID), {Ops[0], Ops[1]});
Value *Result = Builder.CreateExtractValue(Call, 0);
Result = EmitX86MaskedCompareResult(*this, Result, NumElts, nullptr);
Value *Store = Builder.CreateDefaultAlignedStore(Result, Ops[2]);
Result = Builder.CreateExtractValue(Call, 1);
Result = EmitX86MaskedCompareResult(*this, Result, NumElts, nullptr);
Store = Builder.CreateDefaultAlignedStore(Result, Ops[3]);
return Store;
scan-build is complaining that the first Store is never read - should it be
removed?
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