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PowerPC extended mnemonics#49

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davidgiven merged 11 commits intodavidgiven:defaultdavidgiven/ack:defaultfrom kernigh:kernigh-pr-xmkernigh/ack:kernigh-pr-xmCopy head branch name to clipboardJan 26, 2017

+1,488-653

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Commits on Jan 22, 2017

• Teach the assembler about PowerPC extended mnemonics.

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• Fix parameters of signal handlers for linuxppc.

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Commits on Jan 23, 2017

• Allow more PowerPC instructions in relocations.

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• In PowerPC libem, use the new features of our assembler.

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• Use "kills ALL" instead of a list of killed registers.

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Commits on Jan 24, 2017

• Add constraints for pat lab, as done in the m68020 table.

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Commits on Jan 25, 2017

• Add missing size declarations for 8-byte registers.

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Commits on Jan 26, 2017

• Rewrite how PowerPC ncg does conditional branches and tests.

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• In PowerPC libem, remove tge.s and powerpc.h

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• In PowerPC top, don't delete addi r0, r0, 0

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• In PowerPC ncg, switch the scratch register from r11 to r0.

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