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List: llvm-bugs
Subject: [LLVMbugs] [Bug 10220] New: Crash in scheduler on x86-64 with very
From: bugzilla-daemon () llvm ! org
Date: 2011-06-28 23:50:38
Message-ID: bug-10220-206 () http ! llvm ! org/bugs/
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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: unassignedbugs@nondot.org
ReportedBy: sharparrow1@yahoo.com
CC: llvmbugs@cs.uiuc.edu
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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