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<h3>
Andreas Klebinger pushed to branch wip/andreask/xchg_primop
at <a href="https://gitlab.haskell.org/ghc/ghc">Glasgow Haskell Compiler / GHC</a>
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<h4>
Commits:
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<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/616ca149331800c7e21bc9e8311198aeca0c74cd">616ca149</a></strong>
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<span>by Andreas Klebinger</span>
<i>at 2020-05-19T18:11:14+02:00</i>
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<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">WIP: Testcase
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<h4>2 changed files:</h4>
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testsuite/tests/codeGen/should_run/all.T
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testsuite/tests/codeGen/should_run/cg_xchg001.hs
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<h4>Changes:</h4>
<li id="b9bba9766faf563ab195fb1402f14fa78ad5c66f">
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/616ca149331800c7e21bc9e8311198aeca0c74cd#b9bba9766faf563ab195fb1402f14fa78ad5c66f"><strong>testsuite/tests/codeGen/should_run/all.T</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -205,3 +205,4 @@ test('T15892',</td>
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<pre style="margin: 0;"> <span id="LC205" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T16617</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_and_run</span><span class="p">,</span> <span class="p">[''])</span></span>
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<pre style="margin: 0;"> <span id="LC206" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T16449_2</span><span class="p">',</span> <span class="nv" style="color: #008080;">exit_code</span><span class="p">(</span><span class="mi" style="color: #099;">0</span><span class="p">),</span> <span class="nv" style="color: #008080;">compile_and_run</span><span class="p">,</span> <span class="p">[''])</span></span>
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<pre style="margin: 0;"> <span id="LC207" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T16846</span><span class="p">',</span> <span class="p">[</span><span class="nv" style="color: #008080;">only_ways</span><span class="p">(['</span><span class="s1" style="color: #d14;">optasm</span><span class="p">']),</span> <span class="nv" style="color: #008080;">exit_code</span><span class="p">(</span><span class="mi" style="color: #099;">1</span><span class="p">)],</span> <span class="nv" style="color: #008080;">compile_and_run</span><span class="p">,</span> <span class="p">[''])</span></span>
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<pre style="margin: 0;">+<span id="LC208" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">cg_xchg001</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_and_run</span><span class="p">,</span> <span class="p">[''])</span></span></pre>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/616ca149331800c7e21bc9e8311198aeca0c74cd#adf5225589c3a01be46a7e6e9927a0d7f772d32d"><strong>testsuite/tests/codeGen/should_run/cg_xchg001.hs</strong></a>
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<pre style="margin: 0;">+<span id="LC1" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE CPP, MagicHash, BlockArguments, UnboxedTuples #-}</span></span>
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<pre style="margin: 0;">+<span id="LC2" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC3" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Tests for the atomic exchange primop.</span></span>
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<pre style="margin: 0;">+<span id="LC4" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC5" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- We initialize a value with 1, and then perform exchanges on it</span></span>
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<pre style="margin: 0;">+<span id="LC6" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- with two different values. At the end all the values should still</span></span>
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<pre style="margin: 0;">+<span id="LC7" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- be present.</span></span>
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<pre style="margin: 0;">+<span id="LC8" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC9" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">module</span> <span class="nn" style="color: #555;">Main</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">main</span> <span class="p">)</span> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">+<span id="LC10" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC11" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.Bits</span></span>
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<pre style="margin: 0;">+<span id="LC12" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Int</span></span>
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<pre style="margin: 0;">+<span id="LC13" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Prim</span></span>
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<pre style="margin: 0;">+<span id="LC14" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Word</span></span>
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<pre style="margin: 0;">+<span id="LC15" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Control.Monad</span></span>
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<pre style="margin: 0;">+<span id="LC16" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Control.Concurrent</span></span>
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<pre style="margin: 0;">+<span id="LC17" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Foreign.Marshal.Alloc</span></span>
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<pre style="margin: 0;">+<span id="LC18" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Foreign.Storable</span></span>
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<pre style="margin: 0;">+<span id="LC19" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.List</span></span>
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20
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<pre style="margin: 0;">+<span id="LC20" class="line" lang="haskell"></span>
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21
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<pre style="margin: 0;">+<span id="LC21" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Exts</span></span>
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<pre style="margin: 0;">+<span id="LC22" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types</span></span>
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<pre style="margin: 0;">+<span id="LC23" class="line" lang="haskell"></span>
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24
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<pre style="margin: 0;">+<span id="LC24" class="line" lang="haskell"><span class="o" style="font-weight: 600;">#</span><span class="n" style="color: #333;">include</span> <span class="s" style="color: #d14;">"MachDeps.h"</span></span>
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25
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<pre style="margin: 0;">+<span id="LC25" class="line" lang="haskell"></span>
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26
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<pre style="margin: 0;">+<span id="LC26" class="line" lang="haskell"><span class="n" style="color: #333;">main</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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27
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<pre style="margin: 0;">+<span id="LC27" class="line" lang="haskell"> <span class="n" style="color: #333;">alloca</span> <span class="o" style="font-weight: 600;">$</span> <span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">ptr_i</span> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span></span>
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28
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<pre style="margin: 0;">+<span id="LC28" class="line" lang="haskell"> <span class="n" style="color: #333;">poke</span> <span class="n" style="color: #333;">ptr_i</span> <span class="p">(</span><span class="mi" style="color: #099;">1</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC29" class="line" lang="haskell"> <span class="n" style="color: #333;">w1</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newEmptyMVar</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">MVar</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC30" class="line" lang="haskell"> <span class="n" style="color: #333;">forkIO</span> <span class="o" style="font-weight: 600;">$</span> <span class="kr" style="font-weight: 600;">do</span></span>
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<pre style="margin: 0;">+<span id="LC31" class="line" lang="haskell"> <span class="n" style="color: #333;">v</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">swapN</span> <span class="mi" style="color: #099;">50000</span> <span class="mi" style="color: #099;">2</span> <span class="n" style="color: #333;">ptr_i</span></span>
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<pre style="margin: 0;">+<span id="LC32" class="line" lang="haskell"> <span class="n" style="color: #333;">putMVar</span> <span class="n" style="color: #333;">w1</span> <span class="n" style="color: #333;">v</span></span>
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<pre style="margin: 0;">+<span id="LC33" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC34" class="line" lang="haskell"> <span class="n" style="color: #333;">v2</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">swapN</span> <span class="mi" style="color: #099;">50000</span> <span class="mi" style="color: #099;">3</span> <span class="n" style="color: #333;">ptr_i</span></span>
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<pre style="margin: 0;">+<span id="LC35" class="line" lang="haskell"> <span class="n" style="color: #333;">v1</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">takeMVar</span> <span class="n" style="color: #333;">w1</span></span>
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<pre style="margin: 0;">+<span id="LC36" class="line" lang="haskell"> <span class="n" style="color: #333;">print</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">sort</span> <span class="o" style="font-weight: 600;">$</span> <span class="p">[</span><span class="mi" style="color: #099;">1</span><span class="p">,</span><span class="n" style="color: #333;">v1</span><span class="p">,</span><span class="n" style="color: #333;">v2</span><span class="p">]</span></span>
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<pre style="margin: 0;">+<span id="LC37" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC38" class="line" lang="haskell"><span class="n" style="color: #333;">swapN</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Ptr</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span></span>
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<pre style="margin: 0;">+<span id="LC39" class="line" lang="haskell"><span class="n" style="color: #333;">swapN</span> <span class="mi" style="color: #099;">0</span> <span class="n" style="color: #333;">val</span> <span class="n" style="color: #333;">ptr</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="n" style="color: #333;">val</span></span>
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<pre style="margin: 0;">+<span id="LC40" class="line" lang="haskell"><span class="n" style="color: #333;">swapN</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;">val</span> <span class="n" style="color: #333;">ptr</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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<pre style="margin: 0;">+<span id="LC41" class="line" lang="haskell"> <span class="n" style="color: #333;">val'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">swap</span> <span class="n" style="color: #333;">ptr</span> <span class="n" style="color: #333;">val</span></span>
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<pre style="margin: 0;">+<span id="LC42" class="line" lang="haskell"> <span class="n" style="color: #333;">swapN</span> <span class="p">(</span><span class="n" style="color: #333;">n</span><span class="o" style="font-weight: 600;">-</span><span class="mi" style="color: #099;">1</span><span class="p">)</span> <span class="n" style="color: #333;">val'</span> <span class="n" style="color: #333;">ptr</span></span>
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<pre style="margin: 0;">+<span id="LC43" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC44" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC45" class="line" lang="haskell"><span class="n" style="color: #333;">swap</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Ptr</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span></span>
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<pre style="margin: 0;">+<span id="LC46" class="line" lang="haskell"><span class="n" style="color: #333;">swap</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Ptr</span> <span class="n" style="color: #333;">ptr</span><span class="p">)</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">I</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">val</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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<pre style="margin: 0;">+<span id="LC47" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="o" style="font-weight: 600;">$</span> <span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">case</span> <span class="p">(</span><span class="n" style="color: #333;">interlockedExchangeInt</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">ptr</span> <span class="n" style="color: #333;">val</span> <span class="n" style="color: #333;">s</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">of</span></span>
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<pre style="margin: 0;">+<span id="LC48" class="line" lang="haskell"> <span class="p">(</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">s2</span><span class="p">,</span> <span class="n" style="color: #333;">old_val</span> <span class="o" style="font-weight: 600;">#</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">s2</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">I</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">old_val</span> <span class="o" style="font-weight: 600;">#</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC49" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC50" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC51" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- imul2 :: Int -> Int -> (Int,Int,Int)</span></span>
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<pre style="margin: 0;">+<span id="LC52" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- imul2 (I# x) (I# y) = case timesInt2# x y of</span></span>
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<pre style="margin: 0;">+<span id="LC53" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- (# c, h, l #) -> (I# c, I# h, I# l)</span></span>
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<pre style="margin: 0;">+<span id="LC54" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC55" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- checkImul2 :: Int -> Int -> IO ()</span></span>
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<pre style="margin: 0;">+<span id="LC56" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- checkImul2 x y = do</span></span>
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<pre style="margin: 0;">+<span id="LC57" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- -- First we compare against Integer result. Note that this test will become</span></span>
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<pre style="margin: 0;">+<span id="LC58" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- -- moot when Integer implementation will use this primitive</span></span>
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<pre style="margin: 0;">+<span id="LC59" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- let</span></span>
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<pre style="margin: 0;">+<span id="LC60" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- w2 = fromIntegral x * (fromIntegral y :: Integer)</span></span>
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<pre style="margin: 0;">+<span id="LC61" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- (c,h,l) = imul2 x y</span></span>
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62
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<pre style="margin: 0;">+<span id="LC62" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- w = case c of</span></span>
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63
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<pre style="margin: 0;">+<span id="LC63" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- 0 -> fromIntegral l</span></span>
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64
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<pre style="margin: 0;">+<span id="LC64" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- _ -> int2ToInteger h l</span></span>
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<pre style="margin: 0;">+<span id="LC65" class="line" lang="haskell"></span>
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66
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<pre style="margin: 0;">+<span id="LC66" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- unless (w == w2) do</span></span>
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67
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<pre style="margin: 0;">+<span id="LC67" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- putStrLn $ mconcat</span></span>
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68
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<pre style="margin: 0;">+<span id="LC68" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- [ "Failed: "</span></span>
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69
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<pre style="margin: 0;">+<span id="LC69" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- , show x</span></span>
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70
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<pre style="margin: 0;">+<span id="LC70" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- , " * "</span></span>
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71
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<pre style="margin: 0;">+<span id="LC71" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- , show y</span></span>
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72
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<pre style="margin: 0;">+<span id="LC72" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- , "\n Got: "</span></span>
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73
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<pre style="margin: 0;">+<span id="LC73" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- , show w</span></span>
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74
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<pre style="margin: 0;">+<span id="LC74" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- , "\n Expected: "</span></span>
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75
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<pre style="margin: 0;">+<span id="LC75" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- , show w2</span></span>
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76
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<pre style="margin: 0;">+<span id="LC76" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- ]</span></span>
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77
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<pre style="margin: 0;">+<span id="LC77" class="line" lang="haskell"></span>
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78
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<pre style="margin: 0;">+<span id="LC78" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- -- Now we compare with a generic version using unsigned multiply.</span></span>
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79
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<pre style="margin: 0;">+<span id="LC79" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- -- This reimplements the fallback generic version that the compiler uses when</span></span>
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80
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<pre style="margin: 0;">+<span id="LC80" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- -- the mach-op isn't available so it'd better be correct too.</span></span>
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<pre style="margin: 0;">+<span id="LC81" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- let (c',h',l') = genericIMul2 x y</span></span>
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<pre style="margin: 0;">+<span id="LC82" class="line" lang="haskell"></span>
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83
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<pre style="margin: 0;">+<span id="LC83" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- unless ((c,h,l) == (c',h',l')) do</span></span>
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84
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<pre style="margin: 0;">+<span id="LC84" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- putStrLn $ mconcat</span></span>
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85
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<pre style="margin: 0;">+<span id="LC85" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- [ "Failed: "</span></span>
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86
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<pre style="margin: 0;">+<span id="LC86" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- , show x</span></span>
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87
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<pre style="margin: 0;">+<span id="LC87" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- , " * "</span></span>
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88
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<pre style="margin: 0;">+<span id="LC88" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- , show y</span></span>
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89
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<pre style="margin: 0;">+<span id="LC89" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- , "\n Got: "</span></span>
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90
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<pre style="margin: 0;">+<span id="LC90" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- , show (c,h,l)</span></span>
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91
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<pre style="margin: 0;">+<span id="LC91" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- , "\n Expected: "</span></span>
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92
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<pre style="margin: 0;">+<span id="LC92" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- , show (c',h',l')</span></span>
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93
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<pre style="margin: 0;">+<span id="LC93" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- ]</span></span>
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94
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<pre style="margin: 0;">+<span id="LC94" class="line" lang="haskell"></span>
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95
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<pre style="margin: 0;">+<span id="LC95" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- addWordC :: Word -> Word -> (Word,Word)</span></span>
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96
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<pre style="margin: 0;">+<span id="LC96" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- addWordC (W# x) (W# y) = case addWordC# x y of</span></span>
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97
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<pre style="margin: 0;">+<span id="LC97" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- (# l,c #) -> (W# (int2Word# c), W# l)</span></span>
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98
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<pre style="margin: 0;">+<span id="LC98" class="line" lang="haskell"></span>
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99
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<pre style="margin: 0;">+<span id="LC99" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- int2ToInteger :: Int -> Int -> Integer</span></span>
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100
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<pre style="margin: 0;">+<span id="LC100" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- int2ToInteger h l</span></span>
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101
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<pre style="margin: 0;">+<span id="LC101" class="line" lang="haskell"><span class="cd">-- | h < 0 = case addWordC (complement (fromIntegral l)) 1 of</span></span>
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102
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<pre style="margin: 0;">+<span id="LC102" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- (c,w) -> -1 * word2ToInteger (c + complement (fromIntegral h)) w</span></span>
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103
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<pre style="margin: 0;">+<span id="LC103" class="line" lang="haskell"><span class="cd">-- | otherwise = word2ToInteger (fromIntegral h) (fromIntegral l)</span></span>
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104
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<pre style="margin: 0;">+<span id="LC104" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- where</span></span>
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105
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<pre style="margin: 0;">+<span id="LC105" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- word2ToInteger :: Word -> Word -> Integer</span></span>
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106
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<pre style="margin: 0;">+<span id="LC106" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- word2ToInteger x y = (fromIntegral x) `shiftL` WORD_SIZE_IN_BITS + fromIntegral y</span></span>
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107
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<pre style="margin: 0;">+<span id="LC107" class="line" lang="haskell"></span>
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108
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<pre style="margin: 0;">+<span id="LC108" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- timesWord2 :: Word -> Word -> (Int,Int)</span></span>
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109
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<pre style="margin: 0;">+<span id="LC109" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- timesWord2 (W# x) (W# y) = case timesWord2# x y of</span></span>
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110
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<pre style="margin: 0;">+<span id="LC110" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- (# h, l #) -> (I# (word2Int# h), I# (word2Int# l))</span></span>
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111
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<pre style="margin: 0;">+<span id="LC111" class="line" lang="haskell"></span>
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112
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<pre style="margin: 0;">+<span id="LC112" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- genericIMul2 :: Int -> Int -> (Int,Int,Int)</span></span>
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113
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<pre style="margin: 0;">+<span id="LC113" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- genericIMul2 x y = (c,h,l)</span></span>
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114
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<pre style="margin: 0;">+<span id="LC114" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- where</span></span>
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115
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<pre style="margin: 0;">+<span id="LC115" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- (p,l) = timesWord2 (fromIntegral x) (fromIntegral y)</span></span>
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116
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<pre style="margin: 0;">+<span id="LC116" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- h = p - f x y - f y x</span></span>
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117
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<pre style="margin: 0;">+<span id="LC117" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- c = if h == carryFill l then 0 else 1</span></span>
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118
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<pre style="margin: 0;">+<span id="LC118" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- f u v = carryFill u .&. v</span></span>
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119
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<pre style="margin: 0;">+<span id="LC119" class="line" lang="haskell"></span>
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120
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<pre style="margin: 0;">+<span id="LC120" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- -- Return either 00..00 or FF..FF depending on the carry</span></span>
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121
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<pre style="margin: 0;">+<span id="LC121" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- carryFill :: Int -> Int</span></span>
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122
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<pre style="margin: 0;">+<span id="LC122" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- carryFill x = x `shiftR` (WORD_SIZE_IN_BITS - 1)</span></span>
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123
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<pre style="margin: 0;">+<span id="LC123" class="line" lang="haskell"></span>
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124
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<pre style="margin: 0;">+<span id="LC124" class="line" lang="haskell"></span>
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125
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<pre style="margin: 0;">+<span id="LC125" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- main = do</span></span>
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126
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<pre style="margin: 0;">+<span id="LC126" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- checkImul2 10 10</span></span>
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127
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<pre style="margin: 0;">+<span id="LC127" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- checkImul2 10 (-10)</span></span>
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128
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<pre style="margin: 0;">+<span id="LC128" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- checkImul2 minBound (-1)</span></span>
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129
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<pre style="margin: 0;">+<span id="LC129" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- checkImul2 maxBound (-1)</span></span>
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130
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<pre style="margin: 0;">+<span id="LC130" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- checkImul2 minBound 0</span></span>
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<pre style="margin: 0;">+<span id="LC131" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- checkImul2 maxBound 0</span></span>
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<pre style="margin: 0;">+<span id="LC132" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- checkImul2 minBound minBound</span></span>
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<pre style="margin: 0;">+<span id="LC133" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- checkImul2 minBound maxBound</span></span>
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<pre style="margin: 0;">+<span id="LC134" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- checkImul2 maxBound maxBound</span></span></pre>
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