Sophie: ghc-7.4.2-4.mga5 i586

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</script></head><body><div id="package-header"><ul class="links" id="page-menu"><li><a href="index.html">Contents</a></li><li><a href="doc-index.html">Index</a></li></ul><p class="caption">ghc-7.4.2: The GHC API</p></div><div id="content"><div id="module-header"><table class="info"><tr><th>Safe Haskell</th><td>None</td></tr></table><p class="caption">RegAlloc.Graph.SpillClean</p></div><div id="description"><p class="caption">Description</p><div class="doc"><p>Clean out unneeded spill/reload instrs
</p><ul><li> Handling of join points
</li></ul><p>B1:                          B2:
    ...                          ...
       RELOAD SLOT(0), %r1          RELOAD SLOT(0), %r1
       ... A ...                    ... B ...
       jump B3                      jump B3
</p><p>B3: ... C ...
                    RELOAD SLOT(0), %r1
                    ...
</p><p>the plan:
	So long as %r1 hasn't been written to in A, B or C then we don't need the
	reload in B3.
</p><p>What we really care about here is that on the entry to B3, %r1 will always
	have the same value that is in SLOT(0) (ie, %r1 is _valid_)
</p><p>This also works if the reloads in B1/B2 were spills instead, because
	spilling %r1 to a slot makes that slot have the same value as %r1.
</p></div></div><div id="synopsis"><p id="control.syn" class="caption expander" onclick="toggleSection('syn')">Synopsis</p><ul id="section.syn" class="hide" onclick="toggleSection('syn')"><li class="src short"><a href="#v:cleanSpills">cleanSpills</a> :: <a href="Instruction.html#t:Instruction">Instruction</a> instr =&gt; <a href="Platform.html#t:Platform">Platform</a> -&gt; <a href="RegAlloc-Liveness.html#t:LiveCmmDecl">LiveCmmDecl</a> statics instr -&gt; <a href="RegAlloc-Liveness.html#t:LiveCmmDecl">LiveCmmDecl</a> statics instr</li></ul></div><div id="interface"><h1>Documentation</h1><div class="top"><p class="src"><a name="v:cleanSpills" class="def">cleanSpills</a> :: <a href="Instruction.html#t:Instruction">Instruction</a> instr =&gt; <a href="Platform.html#t:Platform">Platform</a> -&gt; <a href="RegAlloc-Liveness.html#t:LiveCmmDecl">LiveCmmDecl</a> statics instr -&gt; <a href="RegAlloc-Liveness.html#t:LiveCmmDecl">LiveCmmDecl</a> statics instr</p><div class="doc"><p>Clean out unneeded spill/reloads from this top level thing.
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