Jessica Paquette 2a84a282fe [AArch64][GlobalISel] Legalize scalar G_CTTZ + G_CTTZ_ZERO_UNDEF ... This adds legalization for scalar G_CTTZ and G_CTTZ_ZERO_UNDEF. Vector support requires handling vector G_BITREVERSE, which I haven't gotten around to yet. For G_CTTZ_ZERO_UNDEF, we just lower it to G_CTTZ. For G_CTTZ, we match SelectionDAG's lowering to a G_BITREVERSE + G_CTLZ. e.g. https://godbolt.org/z/nPEseYh1s (With this patch, we have slightly worse codegen than SDAG for types smaller than s32; it seems like we're missing a combine.) Also, this adds in a function to build G_BITREVERSE to MachineIRBuilder. Differential Revision: https://reviews.llvm.org/D104065		2021-06-10 15:29:51 -07:00
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llvm	[AArch64][GlobalISel] Legalize scalar G_CTTZ + G_CTTZ_ZERO_UNDEF	2021-06-10 15:29:51 -07:00
llvm-c	Revert "[llvm] Sync DebugInfo.h with DebugInfoFlags.def"	2021-06-09 10:39:57 +02:00