http://llvm.org/bugs/show_bug.cgi?id=10220
Summary: Crash in scheduler on x86-64 with very wide addition
Product: new-bugs
Version: unspecified
Platform: PC
OS/Version: All
Status: NEW
Severity: normal
Priority: P
Component: new bugs
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
Testcase:
define void @f(i256* nocapture %a, i256* nocapture %b, i256* nocapture %cc,
i256* nocapture %dd) nounwind uwtable noinline ssp {
entry:
%c = load i256* %cc
%d = load i256* %dd
%add = add nsw i256 %c, %d
store i256 %add, i256* %a, align 8
%or = or i256 %c,
1606938044258990275541962092341162602522202993782792835301376
%add6 = add nsw i256 %or, %d
store i256 %add6, i256* %b, align 8
ret void
}
(The very large constant is 1<<200.)
Crashes with:
Assertion failed: ((getKind() == Data || getKind() == Anti || getKind() ==
Output) && "getReg called on non-register dependence edge!"), function getReg,
file /Users/efriedma/llvm/include/llvm/CodeGen/ScheduleDAG.h, line 204.
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