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<h3>
Ben Gamari pushed to branch wip/with2-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/74af4ca81c37b72429536a3a81fe6b42b6e17a1f">74af4ca8</a></strong>
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<span>by Ben Gamari</span>
<i>at 2020-04-17T15:02:17+00:00</i>
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<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Lint changes
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<h4>1 changed file:</h4>
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<a href="#36a42448a83a9d1f6df8475f03ead2eed199dd8e">
compiler/GHC/Core/Lint.hs
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<h4>Changes:</h4>
<li id="36a42448a83a9d1f6df8475f03ead2eed199dd8e">
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/74af4ca81c37b72429536a3a81fe6b42b6e17a1f#36a42448a83a9d1f6df8475f03ead2eed199dd8e"><strong>compiler/GHC/Core/Lint.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">@@ -702,6 +702,8 @@ lintRhs _bndr rhs = fmap lf_check_static_ptrs getLintFlags >>= go</td>
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702
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702
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<pre style="margin: 0;"> <span id="LC702" class="line" lang="haskell"> <span class="n" style="color: #333;">binders0</span></span>
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703
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703
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<pre style="margin: 0;"> <span id="LC703" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">markAllJoinsBad</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">lintCoreExpr</span> <span class="n" style="color: #333;">rhs</span></span>
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704
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704
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<pre style="margin: 0;"> <span id="LC704" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC705" class="line" lang="haskell"><span class="cd">-- | Lint the RHS of a join point with expected join arity of @n@ (see Note</span></span>
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<pre style="margin: 0;">+<span id="LC706" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- [Join points] in GHC.Core).</span></span>
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<pre style="margin: 0;"> <span id="LC707" class="line" lang="haskell"><span class="n" style="color: #333;">lintJoinLams</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">JoinArity</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">Id</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">CoreExpr</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LintM</span> <span class="kt" style="color: #458; font-weight: 600;">LintedType</span></span>
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<pre style="margin: 0;"> <span id="LC708" class="line" lang="haskell"><span class="n" style="color: #333;">lintJoinLams</span> <span class="n" style="color: #333;">join_arity</span> <span class="n" style="color: #333;">enforce</span> <span class="n" style="color: #333;">rhs</span></span>
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709
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<pre style="margin: 0;"> <span id="LC709" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">join_arity</span> <span class="n" style="color: #333;">rhs</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">@@ -864,14 +866,9 @@ lintCoreExpr e@(App _ _)</td>
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866
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<pre style="margin: 0;"> <span id="LC866" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">Var</span> <span class="n" style="color: #333;">fun</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">fun</span></span>
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865
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867
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<pre style="margin: 0;"> <span id="LC867" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">fun</span> <span class="p">`</span><span class="n" style="color: #333;">hasKey</span><span class="p">`</span> <span class="n" style="color: #333;">keepAliveIdKey</span></span>
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868
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<pre style="margin: 0;"> <span id="LC868" class="line" lang="haskell"> <span class="p">,</span> <span class="p">[</span><span class="n" style="color: #333;">arg_ty1</span><span class="p">,</span> <span class="n" style="color: #333;">arg_ty2</span><span class="p">,</span> <span class="n" style="color: #333;">arg_ty3</span><span class="p">,</span> <span class="n" style="color: #333;">arg_ty4</span><span class="p">,</span> <span class="n" style="color: #333;">arg5</span><span class="p">,</span> <span class="n" style="color: #333;">arg6</span><span class="p">,</span> <span class="n" style="color: #333;">arg7</span><span class="p">]</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">args</span></span>
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867
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<pre style="margin: 0;">-<span id="LC867" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">fun_ty1</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">lintCoreArg</span> <span class="p">(</span><span class="n" style="color: #333;">idType</span> <span class="n" style="color: #333;">fun</span><span class="p">)</span> <span class="n" style="color: #333;">arg_ty1</span> <span class="c1" style="color: #998; font-style: italic;">-- ra :: RuntimeRep</span></span>
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868
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<pre style="margin: 0;">-<span id="LC868" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">fun_ty2</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">lintCoreArg</span> <span class="n" style="color: #333;">fun_ty1</span> <span class="n" style="color: #333;">arg_ty2</span> <span class="c1" style="color: #998; font-style: italic;">-- a :: TYPE ra</span></span>
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869
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<pre style="margin: 0;">-<span id="LC869" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">fun_ty3</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">lintCoreArg</span> <span class="n" style="color: #333;">fun_ty2</span> <span class="n" style="color: #333;">arg_ty3</span> <span class="c1" style="color: #998; font-style: italic;">-- ro :: RuntimeRep</span></span>
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870
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<pre style="margin: 0;">-<span id="LC870" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">fun_ty4</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">lintCoreArg</span> <span class="n" style="color: #333;">fun_ty3</span> <span class="n" style="color: #333;">arg_ty4</span> <span class="c1" style="color: #998; font-style: italic;">-- o :: TYPE ro</span></span>
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871
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<pre style="margin: 0;">-<span id="LC871" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">fun_ty5</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">lintCoreArg</span> <span class="n" style="color: #333;">fun_ty4</span> <span class="n" style="color: #333;">arg5</span> <span class="c1" style="color: #998; font-style: italic;">-- x :: a</span></span>
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<pre style="margin: 0;">-<span id="LC872" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">arg_ty6</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">lintJoinLams</span> <span class="mi" style="color: #099;">1</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">fun</span><span class="p">)</span> <span class="n" style="color: #333;">arg6</span> <span class="c1" style="color: #998; font-style: italic;">-- f :: State# RW -> (# State# RW, o #)</span></span>
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<pre style="margin: 0;">-<span id="LC873" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">fun_ty6</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">lintValApp</span> <span class="n" style="color: #333;">arg6</span> <span class="n" style="color: #333;">fun_ty5</span> <span class="n" style="color: #333;">arg_ty6</span></span>
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<pre style="margin: 0;">-<span id="LC874" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">lintCoreArg</span> <span class="n" style="color: #333;">fun_ty6</span> <span class="n" style="color: #333;">arg7</span> <span class="c1" style="color: #998; font-style: italic;">-- s0 :: State# RW</span></span>
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<pre style="margin: 0;">+<span id="LC869" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">fun_ty5</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">lintCoreArgs</span> <span class="p">(</span><span class="n" style="color: #333;">idType</span> <span class="n" style="color: #333;">fun</span><span class="p">)</span> <span class="p">[</span> <span class="n" style="color: #333;">arg_ty1</span><span class="p">,</span> <span class="n" style="color: #333;">arg_ty2</span><span class="p">,</span> <span class="n" style="color: #333;">arg_ty3</span><span class="p">,</span> <span class="n" style="color: #333;">arg_ty4</span> <span class="p">]</span></span>
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<pre style="margin: 0;">+<span id="LC870" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">arg6_ty</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">lintJoinLams</span> <span class="mi" style="color: #099;">1</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">fun</span><span class="p">)</span> <span class="n" style="color: #333;">arg6</span> <span class="c1" style="color: #998; font-style: italic;">-- f :: State# RW -> (# State# RW, o #)</span></span>
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<pre style="margin: 0;">+<span id="LC871" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">lintCoreArgs</span> <span class="n" style="color: #333;">fun_ty5</span> <span class="p">[</span><span class="n" style="color: #333;">arg5</span><span class="p">,</span> <span class="n" style="color: #333;">arg6</span><span class="p">,</span> <span class="n" style="color: #333;">arg7</span><span class="p">]</span></span>
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<pre style="margin: 0;"> <span id="LC872" class="line" lang="haskell"> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC873" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC874" 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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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1132" 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">@@ -1135,6 +1132,10 @@ lintTyApp fun_ty arg_ty</td>
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<pre style="margin: 0;"> <span id="LC1132" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">failWithL</span> <span class="p">(</span><span class="n" style="color: #333;">mkTyAppMsg</span> <span class="n" style="color: #333;">fun_ty</span> <span class="n" style="color: #333;">arg_ty</span><span class="p">)</span></span>
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1136
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1133
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<pre style="margin: 0;"> <span id="LC1133" class="line" lang="haskell"></span>
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1137
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1134
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<pre style="margin: 0;"> <span id="LC1134" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-----------------</span></span>
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1135
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<pre style="margin: 0;">+<span id="LC1135" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC1136" class="line" lang="haskell"><span class="cd">-- | @lintValApp arg fun_ty arg_ty@ lints an application of @fun arg@</span></span>
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<pre style="margin: 0;">+<span id="LC1137" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- where @fun :: fun_ty@ and @arg :: arg_ty@, returning the type of the</span></span>
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1138
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<pre style="margin: 0;">+<span id="LC1138" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- application.</span></span>
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1138
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1139
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<pre style="margin: 0;"> <span id="LC1139" class="line" lang="haskell"><span class="n" style="color: #333;">lintValApp</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">CoreExpr</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LintedType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LintedType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LintM</span> <span class="kt" style="color: #458; font-weight: 600;">LintedType</span></span>
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1139
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1140
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<pre style="margin: 0;"> <span id="LC1140" class="line" lang="haskell"><span class="n" style="color: #333;">lintValApp</span> <span class="n" style="color: #333;">arg</span> <span class="n" style="color: #333;">fun_ty</span> <span class="n" style="color: #333;">arg_ty</span></span>
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1140
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1141
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<pre style="margin: 0;"> <span id="LC1141" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <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;">splitFunTy_maybe</span> <span class="n" style="color: #333;">fun_ty</span></span>
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