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<h3>
Ben Gamari pushed to branch wip/local-symbols-2
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/e3071f569b9383d58e966929f784278fe38f6eed">e3071f56</a></strong>
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<span>by Ben Gamari</span>
<i>at 2020-10-31T15:20:18-04:00</i>
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<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Enable -fexpose-all-symbols when debug level >=2
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<h4>3 changed files:</h4>
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<a href="#774d88050336ef660c7a219fb06c480c2fc639bc">
compiler/GHC/Driver/Session.hs
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<a href="#86c92886ea01ecd58dd8ae627a0e7918ccda57bf">
docs/users_guide/debug-info.rst
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<a href="#12f1226bde7e9f48203d34d8d857513f2f1f4d75">
docs/users_guide/phases.rst
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<h4>Changes:</h4>
<li id="774d88050336ef660c7a219fb06c480c2fc639bc">
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e3071f569b9383d58e966929f784278fe38f6eed#774d88050336ef660c7a219fb06c480c2fc639bc"><strong>compiler/GHC/Driver/Session.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">@@ -4392,7 +4392,13 @@ setVerbosity :: Maybe Int -> DynP ()</td>
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<pre style="margin: 0;"> <span id="LC4392" class="line" lang="haskell"><span class="n" style="color: #333;">setVerbosity</span> <span class="n" style="color: #333;">mb_n</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">upd</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">dfs</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">dfs</span><span class="p">{</span> <span class="n" style="color: #333;">verbosity</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mb_n</span> <span class="p">`</span><span class="n" style="color: #333;">orElse</span><span class="p">`</span> <span class="mi" style="color: #099;">3</span> <span class="p">})</span></span>
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4393
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<pre style="margin: 0;"> <span id="LC4393" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC4394" class="line" lang="haskell"><span class="n" style="color: #333;">setDebugLevel</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;">Int</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">DynP</span> <span class="nb" style="color: #0086b3;">()</span></span>
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<pre style="margin: 0;">-<span id="LC4395" class="line" lang="haskell"><span class="n" style="color: #333;">setDebugLevel</span> <span class="n" style="color: #333;">mb_n</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">upd</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">dfs</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">dfs</span><span class="p">{</span> <span class="n" style="color: #333;">debugLevel</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mb_n</span> <span class="p">`</span><span class="n" style="color: #333;">orElse</span><span class="p">`</span> <span class="mi" style="color: #099;">2</span> <span class="p">})</span></span>
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<pre style="margin: 0;">+<span id="LC4395" class="line" lang="haskell"><span class="n" style="color: #333;">setDebugLevel</span> <span class="n" style="color: #333;">mb_n</span> <span class="o" style="font-weight: 600;">=</span></span>
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<pre style="margin: 0;">+<span id="LC4396" class="line" lang="haskell"> <span class="n" style="color: #333;">upd</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">dfs</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">exposeSyms</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">dfs</span><span class="p">{</span> <span class="n" style="color: #333;">debugLevel</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">n</span> <span class="p">})</span></span>
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<pre style="margin: 0;">+<span id="LC4397" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">+<span id="LC4398" class="line" lang="haskell"> <span class="n" style="color: #333;">n</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mb_n</span> <span class="p">`</span><span class="n" style="color: #333;">orElse</span><span class="p">`</span> <span class="mi" style="color: #099;">2</span></span>
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<pre style="margin: 0;">+<span id="LC4399" class="line" lang="haskell"> <span class="n" style="color: #333;">exposeSyms</span></span>
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<pre style="margin: 0;">+<span id="LC4400" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">n</span> <span class="o" style="font-weight: 600;">></span> <span class="mi" style="color: #099;">2</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">setGeneralFlag'</span> <span class="kt" style="color: #458; font-weight: 600;">Opt_ExposeInternalSymbols</span></span>
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<pre style="margin: 0;">+<span id="LC4401" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">id</span></span>
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<pre style="margin: 0;"> <span id="LC4402" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC4403" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">PkgDbRef</span></span>
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<pre style="margin: 0;"> <span id="LC4404" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">GlobalPkgDb</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e3071f569b9383d58e966929f784278fe38f6eed#86c92886ea01ecd58dd8ae627a0e7918ccda57bf"><strong>docs/users_guide/debug-info.rst</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">@@ -14,6 +14,7 @@ useable by most UNIX debugging tools.</td>
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<pre style="margin: 0;"> <span id="LC14" class="line" lang="plaintext"> :category: debugging</span>
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<pre style="margin: 0;"> <span id="LC15" class="line" lang="plaintext"></span>
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<pre style="margin: 0;"> <span id="LC16" class="line" lang="plaintext"> :since: 7.10, numeric levels since 8.0</span>
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<pre style="margin: 0;">+<span id="LC17" class="line" lang="plaintext"> :implies: :ghc-flag:`-fexpose-internal-symbols` when ⟨n⟩ >= 2.</span>
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<pre style="margin: 0;"> <span id="LC18" class="line" lang="plaintext"></span>
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<pre style="margin: 0;"> <span id="LC19" class="line" lang="plaintext"> Emit debug information in object code. Currently only DWARF debug</span>
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<pre style="margin: 0;"> <span id="LC20" class="line" lang="plaintext"> information is supported on x86-64 and i386. Currently debug levels 0</span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e3071f569b9383d58e966929f784278fe38f6eed#12f1226bde7e9f48203d34d8d857513f2f1f4d75"><strong>docs/users_guide/phases.rst</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">@@ -728,10 +728,11 @@ Options affecting code generation</td>
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<pre style="margin: 0;"> <span id="LC728" class="line" lang="plaintext"> Request that GHC emits verbose symbol tables which include local symbols</span>
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<pre style="margin: 0;"> <span id="LC729" class="line" lang="plaintext"> for module-internal functions. These can be useful for tools like</span>
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<pre style="margin: 0;"> <span id="LC730" class="line" lang="plaintext"> :ref:`perf <https://perf.wiki.kernel.org/>` but increase object file sizes.</span>
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<pre style="margin: 0;">+<span id="LC731" class="line" lang="plaintext"> This is implied by :ghc-flag:`-g2 <-g>` and above.</span>
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<pre style="margin: 0;"> <span id="LC732" class="line" lang="plaintext"></span>
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<pre style="margin: 0;">-<span id="LC732" class="line" lang="plaintext"> :ghc-flag:`-fno-expose-internal-symbols<span class="idiff left right">` suppresses all non-global symbol</span></span>
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<pre style="margin: 0;">-<span id="LC733" class="line" lang="plaintext"> <span class="idiff left right">table entries, resulting in smaller object file sizes at the expense of</span></span>
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<pre style="margin: 0;">-<span id="LC734" class="line" lang="plaintext"> debuggability.</span>
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<pre style="margin: 0;">+<span id="LC733" class="line" lang="plaintext"> :ghc-flag:`-fno-expose-internal-symbols<span class="idiff left right"> <-fexpose-internal-symbols>`</span></span>
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<pre style="margin: 0;">+<span id="LC734" class="line" lang="plaintext"> <span class="idiff left right">suppresses all non-global symbol table entries, resulting in smaller object</span></span>
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<pre style="margin: 0;">+<span id="LC735" class="line" lang="plaintext"> <span class="idiff left right">file sizes at the expense of </span>debuggability.</span>
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<pre style="margin: 0;"> <span id="LC736" class="line" lang="plaintext"></span>
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<pre style="margin: 0;"> <span id="LC737" class="line" lang="plaintext">.. _options-linker:</span>
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<pre style="margin: 0;"> <span id="LC738" class="line" lang="plaintext"></span>
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