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Marge Bot pushed to branch master
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/e5523324d2c55e0091857e21bf5613b5f6b442a7">e5523324</a></strong>
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<span>by Sylvain Henry</span>
<i>at 2020-10-01T18:38:35-04:00</i>
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<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Bignum: add integerNegate RULE
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<h4>4 changed files:</h4>
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<a href="#84ed6dfb0380e98269259d1b3a64e920ab8b9476">
libraries/ghc-bignum/src/GHC/Num/Integer.hs
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<a href="#e7a467a9ebf548b772e4bb5abe937b61495d8e38">
testsuite/tests/lib/integer/all.T
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testsuite/tests/lib/integer/integerNegate.hs
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testsuite/tests/lib/integer/integerNegate.stderr
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<h4>Changes:</h4>
<li id="84ed6dfb0380e98269259d1b3a64e920ab8b9476">
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e5523324d2c55e0091857e21bf5613b5f6b442a7#84ed6dfb0380e98269259d1b3a64e920ab8b9476"><strong>libraries/ghc-bignum/src/GHC/Num/Integer.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">@@ -486,6 +486,9 @@ integerNegate (IP b)</td>
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486
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486
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<pre style="margin: 0;"> <span id="LC486" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">isTrue</span><span class="o" style="font-weight: 600;">#</span> <span class="p">(</span><span class="n" style="color: #333;">bigNatEqWord</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">b</span> <span class="kt" style="color: #458; font-weight: 600;">ABS_INT_MINBOUND</span><span class="o" style="font-weight: 600;">##</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IS</span> <span class="kt" style="color: #458; font-weight: 600;">INT_MINBOUND</span><span class="o" style="font-weight: 600;">#</span></span>
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487
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<pre style="margin: 0;"> <span id="LC487" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">True</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IN</span> <span class="n" style="color: #333;">b</span></span>
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488
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488
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<pre style="margin: 0;"> <span id="LC488" class="line" lang="haskell"></span>
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489
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<pre style="margin: 0;">+<span id="LC489" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# RULES</span></span>
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<pre style="margin: 0;">+<span id="LC490" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">"integerNegate/integerNegate" forall x. integerNegate (integerNegate x) = x</span></span>
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491
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<pre style="margin: 0;">+<span id="LC491" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">#-}</span></span>
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489
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492
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<pre style="margin: 0;"> <span id="LC492" class="line" lang="haskell"></span>
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490
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<pre style="margin: 0;"> <span id="LC493" class="line" lang="haskell"><span class="cd">-- | Compute absolute value of an 'Integer'</span></span>
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<pre style="margin: 0;"> <span id="LC494" class="line" lang="haskell"><span class="n" style="color: #333;">integerAbs</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Integer</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Integer</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e5523324d2c55e0091857e21bf5613b5f6b442a7#e7a467a9ebf548b772e4bb5abe937b61495d8e38"><strong>testsuite/tests/lib/integer/all.T</strong></a>
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<pre style="margin: 0;">+<span id="LC1" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">integerNegate</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile</span><span class="p">,</span> <span class="p">['</span><span class="s1" style="color: #d14;">-ddump-simpl -dno-typeable-binds -dsuppress-all -dsuppress-uniques</span><span class="p">'])</span></span>
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<pre style="margin: 0;"> <span id="LC2" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">integerBits</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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2
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<pre style="margin: 0;"> <span id="LC3" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">integerConversions</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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3
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<pre style="margin: 0;"> <span id="LC4" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">plusMinusInteger</span><span class="p">',</span> <span class="p">[</span><span class="nv" style="color: #008080;">omit_ways</span><span class="p">(['</span><span class="s1" style="color: #d14;">ghci</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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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e5523324d2c55e0091857e21bf5613b5f6b442a7#ab5a73e1add8bfeedd7308ee18709a4828853fc9"><strong>testsuite/tests/lib/integer/integerNegate.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;">{-# OPTIONS_GHC -O2 #-}</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="kr" style="font-weight: 600;">module</span> <span class="nn" style="color: #555;">Test</span> <span class="kr" style="font-weight: 600;">where</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="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Num.Integer</span></span>
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<pre style="margin: 0;">+<span id="LC6" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC7" class="line" lang="haskell"><span class="n" style="color: #333;">neg_neg</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Integer</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Integer</span></span>
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<pre style="margin: 0;">+<span id="LC8" class="line" lang="haskell"><span class="n" style="color: #333;">neg_neg</span> <span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">integerNegate</span> <span class="p">(</span><span class="n" style="color: #333;">integerNegate</span> <span class="n" style="color: #333;">x</span><span class="p">)</span></span></pre>
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<li id="32bdcaa94bac864dafd0b0879a2f0235f7eb9f18">
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e5523324d2c55e0091857e21bf5613b5f6b442a7#32bdcaa94bac864dafd0b0879a2f0235f7eb9f18"><strong>testsuite/tests/lib/integer/integerNegate.stderr</strong></a>
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<pre style="margin: 0;">+<span id="LC1" class="line" lang="plaintext"></span>
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<pre style="margin: 0;">+<span id="LC2" class="line" lang="plaintext">==================== Tidy Core ====================</span>
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<pre style="margin: 0;">+<span id="LC3" class="line" lang="plaintext">Result size of Tidy Core</span>
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<pre style="margin: 0;">+<span id="LC4" class="line" lang="plaintext"> = {terms: 3, types: 3, coercions: 0, joins: 0/0}</span>
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<pre style="margin: 0;">+<span id="LC5" class="line" lang="plaintext"></span>
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<pre style="margin: 0;">+<span id="LC6" class="line" lang="plaintext">-- RHS size: {terms: 2, types: 1, coercions: 0, joins: 0/0}</span>
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<pre style="margin: 0;">+<span id="LC7" class="line" lang="plaintext">neg_neg = \ x -> x</span>
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<pre style="margin: 0;">+<span id="LC8" class="line" lang="plaintext"></span>
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<pre style="margin: 0;">+<span id="LC9" class="line" lang="plaintext"></span>
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<pre style="margin: 0;">+<span id="LC10" class="line" lang="plaintext"></span></pre>
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