[llvm] [AArch64][GlobalISel] Take abs scalar codegen closer to SDAG (PR #84886)

[Madhur Amilkanthwar via llvm-commits]

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@@ -515,6 +515,7 @@ AArch64LegalizerInfo::AArch64LegalizerInfo(const AArch64Subtarget &ST)
   getActionDefinitionsBuilder(G_ICMP)
       .legalFor({{s32, s32},
                  {s32, s64},
+                 {s64, s64},
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madhur13490 wrote:

{s64, s64} is legal for G_SELECT but further the index is clamped to s32. I don't understand why this is done. 
Inspiring from this I made {s64, s64} legal for G_ICMP.



https://github.com/llvm/llvm-project/pull/84886