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<h3>
David Eichmann pushed to branch wip/ghc-debug
at <a href="https://gitlab.haskell.org/ghc/ghc">Glasgow Haskell Compiler / GHC</a>
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<h4>
Commits:
</h4>
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<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/6e6bde0352bbb73c0d3d81b689f388b6b5dc07c4">6e6bde03</a></strong>
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<span>by David Eichmann</span>
<i>at 2020-10-13T11:47:58+01:00</i>
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<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Remove stack_spOffset and test for TSO closure flags
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<h4>3 changed files:</h4>
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<li class="file-stats">
<a href="#06b370ff84e63d5f9d23a0e79846fa802f93dc44">
libraries/ghc-heap/GHC/Exts/Heap.hs
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<li class="file-stats">
<a href="#314cd94f633689e4a18e0ccd7ff4324b0a58ac17">
libraries/ghc-heap/GHC/Exts/Heap/Closures.hs
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<li class="file-stats">
<a href="#5b5b439543cf197398612a3792ce3e362c519eab">
libraries/ghc-heap/tests/tso_and_stack_closures.hs
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<h4>Changes:</h4>
<li id="06b370ff84e63d5f9d23a0e79846fa802f93dc44">
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/6e6bde0352bbb73c0d3d81b689f388b6b5dc07c4#06b370ff84e63d5f9d23a0e79846fa802f93dc44"><strong>libraries/ghc-heap/GHC/Exts/Heap.hs</strong></a>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="381" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -381,8 +381,6 @@ getClosureDataFromHeapRep closureAddressMay heapRep infoTablePtr pts = do</td>
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381
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381
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<pre style="margin: 0;"> <span id="LC381" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">pure</span> <span class="o" style="font-weight: 600;">$</span> <span class="kt" style="color: #458; font-weight: 600;">UnsupportedClosure</span> <span class="n" style="color: #333;">itbl</span></span>
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<td class="diff-line-num old_line" data-linenumber="382" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
382
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382
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<pre style="margin: 0;"> <span id="LC382" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Ptr</span> <span class="n" style="color: #333;">closureAddress</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">withArray</span> <span class="n" style="color: #333;">rawHeapWords</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</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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383
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<td class="diff-line-num new_line" data-linenumber="383" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
383
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<pre style="margin: 0;"> <span id="LC383" class="line" lang="haskell"> <span class="n" style="color: #333;">fields</span> <span class="o" style="font-weight: 600;"><-</span> <span class="kt" style="color: #458; font-weight: 600;">FFIClosures</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">peekStackFields</span> <span class="n" style="color: #333;">ptr</span></span>
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384
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<pre style="margin: 0;">-<span id="LC384" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">sp</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">FFIClosures</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">stack_sp</span> <span class="n" style="color: #333;">fields</span></span>
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385
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<pre style="margin: 0;">-<span id="LC385" class="line" lang="haskell"> <span class="n" style="color: #333;">spOffset</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">I</span><span class="o" style="font-weight: 600;">#</span> <span class="p">(</span><span class="n" style="color: #333;">minusAddr</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">sp</span> <span class="n" style="color: #333;">closureAddress</span><span class="p">)</span></span>
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386
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384
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<pre style="margin: 0;"> <span id="LC384" class="line" lang="haskell"> <span class="n" style="color: #333;">pure</span> <span class="o" style="font-weight: 600;">$</span> <span class="kt" style="color: #458; font-weight: 600;">StackClosure</span></span>
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387
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385
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<pre style="margin: 0;"> <span id="LC385" class="line" lang="haskell"> <span class="p">{</span> <span class="n" style="color: #333;">info</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">itbl</span></span>
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388
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<td class="diff-line-num new_line" data-linenumber="386" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
386
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<pre style="margin: 0;"> <span id="LC386" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">stack_size</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">FFIClosures</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">stack_size</span> <span class="n" style="color: #333;">fields</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="390" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="388" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -390,7 +388,6 @@ getClosureDataFromHeapRep closureAddressMay heapRep infoTablePtr pts = do</td>
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390
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388
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<pre style="margin: 0;"> <span id="LC388" class="line" lang="haskell"><span class="o" style="font-weight: 600;">#</span><span class="kr" style="font-weight: 600;">if</span> <span class="n" style="color: #333;">__GLASGOW_HASKELL__</span> <span class="o" style="font-weight: 600;">>=</span> <span class="mi" style="color: #099;">811</span></span>
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391
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<pre style="margin: 0;"> <span id="LC389" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">stack_marking</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">FFIClosures</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">stack_marking</span> <span class="n" style="color: #333;">fields</span></span>
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392
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390
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<pre style="margin: 0;"> <span id="LC390" class="line" lang="haskell"><span class="o" style="font-weight: 600;">#</span><span class="n" style="color: #333;">endif</span></span>
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393
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<pre style="margin: 0;">-<span id="LC393" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">stack_spOffset</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">spOffset</span></span>
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394
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391
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<pre style="margin: 0;"> <span id="LC391" class="line" lang="haskell"> <span class="p">})</span></span>
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<pre style="margin: 0;"> <span id="LC392" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</span></span>
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396
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<pre style="margin: 0;"> <span id="LC393" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">fail</span> <span class="o" style="font-weight: 600;">$</span> <span class="s" style="color: #d14;">"Expected 0 ptr argument to STACK, found "</span></span>
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<li id="314cd94f633689e4a18e0ccd7ff4324b0a58ac17">
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/6e6bde0352bbb73c0d3d81b689f388b6b5dc07c4#314cd94f633689e4a18e0ccd7ff4324b0a58ac17"><strong>libraries/ghc-heap/GHC/Exts/Heap/Closures.hs</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">@@ -318,11 +318,6 @@ data GenClosure b</td>
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318
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<pre style="margin: 0;"> <span id="LC318" class="line" lang="haskell"><span class="o" style="font-weight: 600;">#</span><span class="kr" style="font-weight: 600;">if</span> <span class="n" style="color: #333;">__GLASGOW_HASKELL__</span> <span class="o" style="font-weight: 600;">>=</span> <span class="mi" style="color: #099;">810</span></span>
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<pre style="margin: 0;"> <span id="LC319" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">stack_marking</span> <span class="o" style="font-weight: 600;">::</span> <span class="o" style="font-weight: 600;">!</span><span class="kt" style="color: #458; font-weight: 600;">Word8</span></span>
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<pre style="margin: 0;"> <span id="LC320" class="line" lang="haskell"><span class="o" style="font-weight: 600;">#</span><span class="n" style="color: #333;">endif</span></span>
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<pre style="margin: 0;">-<span id="LC321" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- | Offset of the `StgStack::sp` pointer in *bytes*:</span></span>
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<pre style="margin: 0;">-<span id="LC322" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">--</span></span>
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<pre style="margin: 0;">-<span id="LC323" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- stgStack->sp == ((byte*)stgStack)+stack_spOffset</span></span>
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<pre style="margin: 0;">-<span id="LC324" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">--</span></span>
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<pre style="margin: 0;">-<span id="LC325" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">stack_spOffset</span> <span class="o" style="font-weight: 600;">::</span> <span class="o" style="font-weight: 600;">!</span><span class="kt" style="color: #458; font-weight: 600;">Int</span></span>
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<pre style="margin: 0;"> <span id="LC321" class="line" lang="haskell"> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC322" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC323" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">------------------------------------------------------------</span></span>
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<li id="5b5b439543cf197398612a3792ce3e362c519eab">
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/6e6bde0352bbb73c0d3d81b689f388b6b5dc07c4#5b5b439543cf197398612a3792ce3e362c519eab"><strong>libraries/ghc-heap/tests/tso_and_stack_closures.hs</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">@@ -22,10 +22,20 @@ main :: IO ()</td>
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<pre style="margin: 0;"> <span id="LC22" 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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<pre style="margin: 0;"> <span id="LC23" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">tso</span><span class="p">,</span> <span class="n" style="color: #333;">stack</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="cp" style="color: #999; font-weight: 600;">{-# SCC "MyCostCentre" #-}</span> <span class="n" style="color: #333;">createAndUnpackTSOAndSTACKClosure</span></span>
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<pre style="margin: 0;"> <span id="LC24" class="line" lang="haskell"> <span class="n" style="color: #333;">assertEqual</span> <span class="p">(</span><span class="n" style="color: #333;">getClosureType</span> <span class="n" style="color: #333;">tso</span><span class="p">)</span> <span class="kt" style="color: #458; font-weight: 600;">TSO</span></span>
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25
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<pre style="margin: 0;">-<span id="LC25" class="line" lang="haskell"> <span class="n" style="color: #333;">assertEqual</span> <span class="p">(</span><span class="n" style="color: #333;">getClosureType</span> <span class="n" style="color: #333;">stack</span><span class="p">)</span> <span class="kt" style="color: #458; font-weight: 600;">STACK</span></span>
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<pre style="margin: 0;"> <span id="LC25" class="line" lang="haskell"> <span class="n" style="color: #333;">assertEqual</span> <span class="p">(</span><span class="n" style="color: #333;">what_next</span> <span class="n" style="color: #333;">tso</span><span class="p">)</span> <span class="kt" style="color: #458; font-weight: 600;">ThreadRunGHC</span></span>
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<pre style="margin: 0;"> <span id="LC26" class="line" lang="haskell"> <span class="n" style="color: #333;">assertEqual</span> <span class="p">(</span><span class="n" style="color: #333;">why_blocked</span> <span class="n" style="color: #333;">tso</span><span class="p">)</span> <span class="kt" style="color: #458; font-weight: 600;">NotBlocked</span></span>
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<pre style="margin: 0;"> <span id="LC27" class="line" lang="haskell"> <span class="n" style="color: #333;">assertEqual</span> <span class="p">(</span><span class="n" style="color: #333;">saved_errno</span> <span class="n" style="color: #333;">tso</span><span class="p">)</span> <span class="mi" style="color: #099;">0</span></span>
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<pre style="margin: 0;">+<span id="LC28" class="line" lang="haskell"> <span class="n" style="color: #333;">forM_</span> <span class="p">(</span><span class="n" style="color: #333;">flags</span> <span class="n" style="color: #333;">tso</span><span class="p">)</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;">flag</span> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">flag</span> <span class="kr" style="font-weight: 600;">of</span></span>
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<pre style="margin: 0;">+<span id="LC29" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">TsoFlagsUnknownValue</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">error</span> <span class="o" style="font-weight: 600;">$</span> <span class="s" style="color: #d14;">"Unknown flag: "</span> <span class="o" style="font-weight: 600;">++</span> <span class="n" style="color: #333;">show</span> <span class="n" style="color: #333;">flag</span></span>
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<pre style="margin: 0;">+<span id="LC30" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">flag</span> <span class="p">`</span><span class="n" style="color: #333;">elem</span><span class="p">`</span></span>
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<pre style="margin: 0;">+<span id="LC31" class="line" lang="haskell"> <span class="p">[</span> <span class="kt" style="color: #458; font-weight: 600;">TsoLocked</span></span>
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<pre style="margin: 0;">+<span id="LC32" class="line" lang="haskell"> <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">TsoBlockx</span></span>
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<pre style="margin: 0;">+<span id="LC33" class="line" lang="haskell"> <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">TsoStoppedOnBreakpoint</span></span>
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<pre style="margin: 0;">+<span id="LC34" class="line" lang="haskell"> <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">TsoSqueezed</span></span>
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<pre style="margin: 0;">+<span id="LC35" class="line" lang="haskell"> <span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">error</span> <span class="o" style="font-weight: 600;">$</span> <span class="s" style="color: #d14;">"Unexpected flag: "</span> <span class="o" style="font-weight: 600;">++</span> <span class="n" style="color: #333;">show</span> <span class="n" style="color: #333;">flag</span></span>
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<pre style="margin: 0;">+<span id="LC36" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">return</span> <span class="nb" style="color: #0086b3;">()</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;">assertEqual</span> <span class="p">(</span><span class="n" style="color: #333;">getClosureType</span> <span class="n" style="color: #333;">stack</span><span class="p">)</span> <span class="kt" style="color: #458; font-weight: 600;">STACK</span></span>
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<pre style="margin: 0;"> <span id="LC39" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC40" class="line" lang="haskell"><span class="o" style="font-weight: 600;">#</span><span class="kr" style="font-weight: 600;">if</span> <span class="n" style="color: #333;">defined</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">PROFILING</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC41" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">costCentre</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ccs_cc</span> <span class="o" style="font-weight: 600;"><$></span> <span class="p">(</span><span class="n" style="color: #333;">cccs</span> <span class="o" style="font-weight: 600;">=<<</span> <span class="n" style="color: #333;">prof</span> <span class="n" style="color: #333;">tso</span><span class="p">)</span></span>
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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">@@ -71,7 +81,10 @@ foreign import ccall safe "create_tso.h create_and_unpack_tso_and_stack"</td>
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<pre style="margin: 0;"> <span id="LC81" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Ptr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Ptr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Ptr</span> <span class="kt" style="color: #458; font-weight: 600;">Any</span><span class="p">))</span></span>
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<pre style="margin: 0;"> <span id="LC82" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IO</span> <span class="nb" style="color: #0086b3;">()</span></span>
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<pre style="margin: 0;"> <span id="LC83" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC74" class="line" lang="haskell"><span class="n" style="color: #333;">createAndUnpackTSOAndSTACKClosure</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;">GenClosure</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Ptr</span> <span class="kt" style="color: #458; font-weight: 600;">Any</span><span class="p">),</span> <span class="kt" style="color: #458; font-weight: 600;">GenClosure</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Ptr</span> <span class="kt" style="color: #458; font-weight: 600;">Any</span><span class="p">))</span></span>
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<pre style="margin: 0;">+<span id="LC84" class="line" lang="haskell"><span class="n" style="color: #333;">createAndUnpackTSOAndSTACKClosure</span></span>
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<pre style="margin: 0;">+<span id="LC85" class="line" lang="haskell"> <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;">GenClosure</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Ptr</span> <span class="kt" style="color: #458; font-weight: 600;">Any</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC86" class="line" lang="haskell"> <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">GenClosure</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Ptr</span> <span class="kt" style="color: #458; font-weight: 600;">Any</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC87" class="line" lang="haskell"> <span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC88" class="line" lang="haskell"><span class="n" style="color: #333;">createAndUnpackTSOAndSTACKClosure</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="LC89" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC90" 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;">ptrPtrTso</span> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span></span>
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