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<h3>
Ben Gamari pushed to branch wip/backports
at <a href="https://gitlab.haskell.org/ghc/ghc">Glasgow Haskell Compiler / GHC</a>
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Commits:
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<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/540d5562f323eabdc2b80ba1520be312b88ab8ae">540d5562</a></strong>
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<span>by Ben Gamari</span>
<i>at 2020-06-02T10:07:07-04:00</i>
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<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">CorePrep: Print type if we fail to split
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<h4>1 changed file:</h4>
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compiler/coreSyn/CorePrep.hs
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<h4>Changes:</h4>
<li id="f50439b73583d5fc97ab8917b6fc66f6188a1e62">
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/540d5562f323eabdc2b80ba1520be312b88ab8ae#f50439b73583d5fc97ab8917b6fc66f6188a1e62"><strong>compiler/coreSyn/CorePrep.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">@@ -927,8 +927,10 @@ cpeApp top_env expr</td>
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927
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<pre style="margin: 0;"> <span id="LC927" class="line" lang="haskell"> <span class="p">(</span><span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">ss_rest</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">True</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="n" style="color: #333;">topDmd</span><span class="p">,</span> <span class="n" style="color: #333;">ss_rest</span><span class="p">)</span></span>
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928
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<pre style="margin: 0;"> <span id="LC928" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">ss1</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">ss_rest</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">False</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="n" style="color: #333;">ss1</span><span class="p">,</span> <span class="n" style="color: #333;">ss_rest</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC929" class="line" lang="haskell"> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">[]</span><span class="p">,</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="n" style="color: #333;">topDmd</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span><span class="p">)</span></span>
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930
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<pre style="margin: 0;">-<span id="LC930" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">arg_ty</span><span class="p">,</span> <span class="n" style="color: #333;">res_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">expectJust</span> <span class="s" style="color: #d14;">"cpeBody:collect_args"</span> <span class="o" style="font-weight: 600;">$</span></span>
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931
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<pre style="margin: 0;">-<span id="LC931" class="line" lang="haskell"> <span class="n" style="color: #333;">splitFunTy_maybe</span> <span class="n" style="color: #333;">fun_ty</span></span>
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<pre style="margin: 0;">+<span id="LC930" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">arg_ty</span><span class="p">,</span> <span class="n" style="color: #333;">res_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span></span>
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<pre style="margin: 0;">+<span id="LC931" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">splitFunTy_maybe</span> <span class="n" style="color: #333;">fun_ty</span> <span class="kr" style="font-weight: 600;">of</span></span>
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<pre style="margin: 0;">+<span id="LC932" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">as</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">as</span></span>
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<td class="diff-line-num new new_line" data-linenumber="933" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC933" 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;">pprPanic</span> <span class="s" style="color: #d14;">"cpeBody"</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">fun_ty</span> <span class="o" style="font-weight: 600;">$$</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">expr</span><span class="p">)</span></span>
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<td class="diff-line-num new_line" data-linenumber="934" 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">
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<pre style="margin: 0;"> <span id="LC934" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">fs</span><span class="p">,</span> <span class="n" style="color: #333;">arg'</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">cpeArg</span> <span class="n" style="color: #333;">top_env</span> <span class="n" style="color: #333;">ss1</span> <span class="n" style="color: #333;">arg</span> <span class="n" style="color: #333;">arg_ty</span></span>
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933
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<td class="diff-line-num new_line" data-linenumber="935" 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">
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<pre style="margin: 0;"> <span id="LC935" class="line" lang="haskell"> <span class="n" style="color: #333;">rebuild_app</span> <span class="n" style="color: #333;">as</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">App</span> <span class="n" style="color: #333;">fun'</span> <span class="n" style="color: #333;">arg'</span><span class="p">)</span> <span class="n" style="color: #333;">res_ty</span> <span class="p">(</span><span class="n" style="color: #333;">fs</span> <span class="p">`</span><span class="n" style="color: #333;">appendFloats</span><span class="p">`</span> <span class="n" style="color: #333;">floats</span><span class="p">)</span> <span class="n" style="color: #333;">ss_rest</span></span>
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934
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<td class="diff-line-num new_line" data-linenumber="936" 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">
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<pre style="margin: 0;"> <span id="LC936" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">CpeCast</span> <span class="n" style="color: #333;">co</span> <span class="o" style="font-weight: 600;">-></span></span>
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