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| author | John Wickerson <j.wickerson@imperial.ac.uk> | 2020-11-18 12:57:44 +0000 |
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| committer | overleaf <overleaf@localhost> | 2020-11-18 12:57:49 +0000 |
| commit | ee16ea1977cc28f2e4e72220c83e9bff58e3b4e4 (patch) | |
| tree | 3f921278786d14910c4fc0a32455c31bf3f21a07 /introduction.tex | |
| parent | 69a941a5ac5a22402aa9db16c561007964d19f19 (diff) | |
| download | oopsla21_fvhls-ee16ea1977cc28f2e4e72220c83e9bff58e3b4e4.tar.gz oopsla21_fvhls-ee16ea1977cc28f2e4e72220c83e9bff58e3b4e4.zip | |
Update on Overleaf.
Diffstat (limited to 'introduction.tex')
| -rw-r--r-- | introduction.tex | 3 |
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diff --git a/introduction.tex b/introduction.tex index a15ad33..9f9903a 100644 --- a/introduction.tex +++ b/introduction.tex @@ -18,7 +18,8 @@ This undermines any reasoning conducted at the software level. And there are reasons to doubt that HLS tools actually \emph{do} preserve equivalence. First, just like conventional compilers, HLS tools are large pieces of software that perform a series of complex analyses and transformations. Second, unlike conventional compilers, HLS tools target HDL, which has superficial syntactic similarities to software languages but a subtly different semantics, making it easy to introduce behavioural mismatches between the output of the HLS tool and its input. %Hence, the premise of this work is: Can we trust these compilers to translate high-level languages like C/C++ to HDL correctly? -These doubts have been realised by For instance, \citet{lidbury15_many_core_compil_fuzzin} had to abandon their attempt to fuzz-test Altera's (now Intel's) OpenCL compiler since it ``either crashed or emitted an internal compiler error'' on so many of their test inputs. +These doubts have been realised by +For instance, \citet{lidbury15_many_core_compil_fuzzin} had to abandon their attempt to fuzz-test Altera's (now Intel's) OpenCL compiler since it ``either crashed or emitted an internal compiler error'' on so many of their test inputs. More recently, Du et al.~\cite{du+20} fuzz-tested three commercial HLS tools using Csmith~\cite{yang11_findin_under_bugs_c_compil}, and despite restricting the generated programs to the C fragment explicitly supported by all the tools, they still found that on average 2.5\% of test cases generated a design that did not match the behaviour of the input. % Meanwhile, Xilinx's Vivado HLS has been shown to apply pipelining optimisations incorrectly\footnote{\url{https://bit.ly/vivado-hls-pipeline-bug}} or to silently generate wrong code should the programmer stray outside the fragment of C that it supports\footnote{\url{https://bit.ly/vivado-hls-pointer-bug}}. |