http://llvm.org/bugs/show_bug.cgi?id=13742
Bug #: 13742
Summary: Assertion `DefGroup >= PrevDefGroup && "Tied inline
asm operands must be in increasing order."' failed.
Product: new-bugs
Version: unspecified
Platform: PC
OS/Version: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: new bugs
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
Classification: Unclassified
LLVM r162990, x86_64 linux
test case reduced by creduce from ThreadSanitizer tests.
% cat z.cc
void rep_clr_1 () {
int d0, d1;
__asm__ __volatile__ ("rep stosb":"=&c" (d0), "=&D" (d1) :"a" (0),
"1" (0), "0" (0) );
}
% clang++ -O2 z.cc
clang: /home/kcc/llvm/lib/CodeGen/SelectionDAG/InstrEmitter.cpp:953: void
llvm::InstrEmitter::EmitSpecialNode(llvm::SDNode *, bool, bool,
DenseMap<llvm::SDValue, unsigned int> &): Assertion `DefGroup >= PrevDefGroup
&& "Tied inline asm operands must be in increasing order."' failed.
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