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</o:shapelayout></xml><![endif]--></head><body lang=EN-GB link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hi Tim,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>The attached patches implement NEON for big endian ARM64. Covered are:<o:p></o:p></p><p class=MsoListParagraph style='margin-left:22.5pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>1.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Creation of a targetlowering hook to control if bitcasts can be elided, and wiring of this up for ARM64.<o:p></o:p></p><p class=MsoListParagraph style='margin-left:22.5pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>2.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Fixing of big endian argument passing (non-NEON specific).<o:p></o:p></p><p class=MsoListParagraph style='margin-left:22.5pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>3.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>[trivial] disconnection of bitcast combine in ISelLowering<o:p></o:p></p><p class=MsoListParagraph style='margin-left:22.5pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>4.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>[mechanical] Predication of LDR/STR (on vectors) to be little-endian-only.<o:p></o:p></p><p class=MsoListParagraph style='margin-left:22.5pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>5.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>The Big One ™. Implementation of bitcast for ARM64BE. A good explanation is available in the patch commit log.<o:p></o:p></p><p class=MsoListParagraph style='margin-left:58.5pt;text-indent:-18.0pt;mso-list:l0 level2 lfo1'><![if !supportLists]><span style='font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]>This is currently missing testcases. I have been using runtime tests, not codegen tests during my development because those REVs made my brain melt and I didn’t trust the compiler output or my own head to sanitize the compiler output. Now that I’m happy that the compiler does the right thing, I will go and create codegen regression tests. I think it’s worthwhile getting the review process started before that though, as they’ll be mechanical to create with no value to review.<o:p></o:p></p><p class=MsoListParagraph style='margin-left:58.5pt;text-indent:-18.0pt;mso-list:l0 level2 lfo1'><![if !supportLists]><span style='font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]>The tblgen file ended up with lots of very long lines. I decided it might be best to keep these long so as to aid the reviewer – line breaks would make diff output a lot harder to see what has been changed/modified. I will then go and reformat this patch to remove the long lines (or I can change it now, if the reviewer desires).<o:p></o:p></p><p class=MsoListParagraph style='margin-left:58.5pt;text-indent:-18.0pt;mso-list:l0 level2 lfo1'><![if !supportLists]><span style='font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]>I can stick this in Phab if you like.<o:p></o:p></p><p class=MsoListParagraph style='margin-left:22.5pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='mso-list:Ignore'>6.<span style='font:7.0pt "Times New Roman"'> </span></span><![endif]>Implementation of call/ret lowering and formal arguments lowering.<o:p></o:p></p><p class=MsoListParagraph style='margin-left:58.5pt;text-indent:-18.0pt;mso-list:l0 level2 lfo1'><![if !supportLists]><span style='font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]>This is also currently missing testcases – testcases will be created before commit.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>The only thing missing at the moment except the testcases is fast-isel support. That’ll come in a later commit.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Cheers,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>James<o:p></o:p></p></div></body></html>