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<base href="https://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - "two address instruction invalid" assertion in TwoAddressInstructionPass"
href="https://llvm.org/bugs/show_bug.cgi?id=23578">23578</a>
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<th>Summary</th>
<td>"two address instruction invalid" assertion in TwoAddressInstructionPass
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<th>Product</th>
<td>new-bugs
</td>
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<th>Version</th>
<td>3.5
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>new bugs
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>gm4cheng@gmail.com
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<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
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<th>Classification</th>
<td>Unclassified
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<p>
<div>
<pre>Here is a simple llvm ir at the end. When I ran "lli -O0" on it, I got:
lli: .../TwoAddressInstructionPass.cpp:1314: bool
{anonymous}::TwoAddressInstructionPass::collectTiedOperands(llvm::MachineInstr*,
{anonymous}::TwoAddressInstructionPass::TiedOperandMap&): Assertion `SrcReg &&
SrcMO.isUse() && "two address instruction invalid"' failed.
---- <begin> ----
; ModuleID = 'module_name'
%0 = type <{ double*, i1* }>
define void @main(double*, %0* %t0) {
entry:
br label %1
; <label>:1 ; preds = %entry
%2 = getelementptr inbounds %0* %t0, i64 0, i32 1
%3 = load i1** %2, align 8
%4 = load i1* %3, align 1
%5 = getelementptr inbounds %0* %t0, i64 0, i32 0
%6 = load double** %5, align 8
%7 = load double* %6, align 8
%8 = fcmp ogt double %7, -1.000000e-01
%9 = select i1 %8, double 1.000000e+00, double 0.000000e+00
%10 = select i1 %4, double %9, double 1.000000e+00
store double %10, double* %0, align 8
ret void
}
---- <end> ----</pre>
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