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28 lines
1.0 KiB
28 lines
1.0 KiB
7 months ago
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//===- subzero/crosstest/insertelement.h - Helper for PNaCl workaround. ---===//
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//
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// The Subzero Code Generator
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// Helper function to work around a potential stack overflow issue.
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//
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//===----------------------------------------------------------------------===//
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#ifndef INSERTELEMENT_H
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#define INSERTELEMENT_H
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// Helper function to perform the insertelement bitcode instruction. The PNaCl
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// ABI simplifications transform insertelement/extractelement instructions with
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// a non-constant index into something involving alloca. This can cause a stack
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// overflow if the alloca is inside a loop.
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template <typename VectorType, typename ElementType>
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void __attribute__((noinline))
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setElement(VectorType &Value, size_t Index, ElementType Element) {
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Value[Index] = Element;
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}
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#endif // INSERTELEMENT_H
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