<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html> <head> <!-- Generated by HsColour, http://www.cs.york.ac.uk/fp/darcs/hscolour/ --> <title>nativeGen/PPC/RegInfo.hs</title> <link type='text/css' rel='stylesheet' href='hscolour.css' /> </head> <body> <pre><a name="line-1"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span> <a name="line-2"></a><span class='hs-comment'>--</span> <a name="line-3"></a><span class='hs-comment'>-- Machine-specific parts of the register allocator</span> <a name="line-4"></a><span class='hs-comment'>--</span> <a name="line-5"></a><span class='hs-comment'>-- (c) The University of Glasgow 1996-2004</span> <a name="line-6"></a><span class='hs-comment'>--</span> <a name="line-7"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span> <a name="line-8"></a> <a name="line-9"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>PPC</span><span class='hs-varop'>.</span><span class='hs-conid'>RegInfo</span> <span class='hs-layout'>(</span> <a name="line-10"></a> <span class='hs-conid'>JumpDest</span><span class='hs-layout'>,</span> <a name="line-11"></a> <span class='hs-varid'>canShortcut</span><span class='hs-layout'>,</span> <a name="line-12"></a> <span class='hs-varid'>shortcutJump</span><span class='hs-layout'>,</span> <a name="line-13"></a> <a name="line-14"></a> <span class='hs-varid'>shortcutStatic</span> <a name="line-15"></a><span class='hs-layout'>)</span> <a name="line-16"></a> <a name="line-17"></a><span class='hs-keyword'>where</span> <a name="line-18"></a> <a name="line-19"></a><span class='hs-cpp'>#include "nativeGen/NCG.h"</span> <a name="line-20"></a><span class='hs-cpp'>#include "HsVersions.h"</span> <a name="line-21"></a> <a name="line-22"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>PPC</span><span class='hs-varop'>.</span><span class='hs-conid'>Regs</span> <a name="line-23"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>PPC</span><span class='hs-varop'>.</span><span class='hs-conid'>Instr</span> <a name="line-24"></a> <a name="line-25"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>BlockId</span> <a name="line-26"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Cmm</span> <a name="line-27"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>CLabel</span> <a name="line-28"></a> <a name="line-29"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Outputable</span> <a name="line-30"></a> <a name="line-31"></a><a name="JumpDest"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>JumpDest</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>DestBlockId</span> <span class='hs-conid'>BlockId</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>DestImm</span> <span class='hs-conid'>Imm</span> <a name="line-32"></a> <a name="line-33"></a><a name="canShortcut"></a><span class='hs-definition'>canShortcut</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Instr</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>JumpDest</span> <a name="line-34"></a><span class='hs-definition'>canShortcut</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span> <a name="line-35"></a> <a name="line-36"></a><a name="shortcutJump"></a><span class='hs-definition'>shortcutJump</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>BlockId</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>JumpDest</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Instr</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Instr</span> <a name="line-37"></a><span class='hs-definition'>shortcutJump</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>other</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>other</span> <a name="line-38"></a> <a name="line-39"></a> <a name="line-40"></a><a name="shortcutStatic"></a><span class='hs-comment'>-- Here because it knows about JumpDest</span> <a name="line-41"></a><span class='hs-definition'>shortcutStatic</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>BlockId</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>JumpDest</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CmmStatic</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CmmStatic</span> <a name="line-42"></a> <a name="line-43"></a><span class='hs-definition'>shortcutStatic</span> <span class='hs-varid'>fn</span> <span class='hs-layout'>(</span><span class='hs-conid'>CmmStaticLit</span> <span class='hs-layout'>(</span><span class='hs-conid'>CmmLabel</span> <span class='hs-varid'>lab</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <a name="line-44"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>uq</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>maybeAsmTemp</span> <span class='hs-varid'>lab</span> <a name="line-45"></a> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>CmmStaticLit</span> <span class='hs-layout'>(</span><span class='hs-conid'>CmmLabel</span> <span class='hs-layout'>(</span><span class='hs-varid'>shortBlockId</span> <span class='hs-varid'>fn</span> <span class='hs-layout'>(</span><span class='hs-conid'>BlockId</span> <span class='hs-varid'>uq</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <a name="line-46"></a> <a name="line-47"></a><span class='hs-definition'>shortcutStatic</span> <span class='hs-varid'>fn</span> <span class='hs-layout'>(</span><span class='hs-conid'>CmmStaticLit</span> <span class='hs-layout'>(</span><span class='hs-conid'>CmmLabelDiffOff</span> <span class='hs-varid'>lbl1</span> <span class='hs-varid'>lbl2</span> <span class='hs-varid'>off</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <a name="line-48"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>uq</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>maybeAsmTemp</span> <span class='hs-varid'>lbl1</span> <a name="line-49"></a> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>CmmStaticLit</span> <span class='hs-layout'>(</span><span class='hs-conid'>CmmLabelDiffOff</span> <span class='hs-layout'>(</span><span class='hs-varid'>shortBlockId</span> <span class='hs-varid'>fn</span> <span class='hs-layout'>(</span><span class='hs-conid'>BlockId</span> <span class='hs-varid'>uq</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>lbl2</span> <span class='hs-varid'>off</span><span class='hs-layout'>)</span> <a name="line-50"></a> <span class='hs-comment'>-- slightly dodgy, we're ignoring the second label, but this</span> <a name="line-51"></a> <span class='hs-comment'>-- works with the way we use CmmLabelDiffOff for jump tables now.</span> <a name="line-52"></a> <a name="line-53"></a><span class='hs-definition'>shortcutStatic</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>other_static</span> <a name="line-54"></a> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>other_static</span> <a name="line-55"></a> <a name="line-56"></a><a name="shortBlockId"></a><span class='hs-definition'>shortBlockId</span> <a name="line-57"></a> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>BlockId</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>JumpDest</span><span class='hs-layout'>)</span> <a name="line-58"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>BlockId</span> <a name="line-59"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CLabel</span> <a name="line-60"></a> <a name="line-61"></a><span class='hs-definition'>shortBlockId</span> <span class='hs-varid'>fn</span> <span class='hs-varid'>blockid</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>BlockId</span> <span class='hs-varid'>uq</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <a name="line-62"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>fn</span> <span class='hs-varid'>blockid</span> <span class='hs-keyword'>of</span> <a name="line-63"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>mkAsmTempLabel</span> <span class='hs-varid'>uq</span> <a name="line-64"></a> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>DestBlockId</span> <span class='hs-varid'>blockid'</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>shortBlockId</span> <span class='hs-varid'>fn</span> <span class='hs-varid'>blockid'</span> <a name="line-65"></a> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>DestImm</span> <span class='hs-layout'>(</span><span class='hs-conid'>ImmCLbl</span> <span class='hs-varid'>lbl</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>lbl</span> <a name="line-66"></a> <span class='hs-sel'>_other</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>panic</span> <span class='hs-str'>"shortBlockId"</span> <a name="line-67"></a> </pre></body> </html>
