[llvm] [AArch64] Neoverse V1 scheduling info (PR #126707)

[David Green via llvm-commits]

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@@ -2973,10 +2973,10 @@ drps
 # CHECK-NEXT:  -      -      -      -      -      -      -      -      -      -     0.25   0.25   0.25   0.25    -      -      -      -     clz	x26, x4
 # CHECK-NEXT:  -      -      -      -      -      -      -      -      -      -     0.25   0.25   0.25   0.25    -      -      -      -     cls	w3, w5
 # CHECK-NEXT:  -      -      -      -      -      -      -      -      -      -     0.25   0.25   0.25   0.25    -      -      -      -     cls	x20, x5
-# CHECK-NEXT:  -      -      -      -      -      -      -      -      -      -     5.00    -      -      -      -      -      -      -     udiv	w0, w7, w10
-# CHECK-NEXT:  -      -      -      -      -      -      -      -      -      -     5.00    -      -      -      -      -      -      -     udiv	x9, x22, x4
-# CHECK-NEXT:  -      -      -      -      -      -      -      -      -      -     5.00    -      -      -      -      -      -      -     sdiv	w12, w21, w0
-# CHECK-NEXT:  -      -      -      -      -      -      -      -      -      -     5.00    -      -      -      -      -      -      -     sdiv	x13, x2, x1
+# CHECK-NEXT:  -      -      -      -      -      -      -      -      -      -     12.00   -      -      -      -      -      -      -     udiv	w0, w7, w10
+# CHECK-NEXT:  -      -      -      -      -      -      -      -      -      -     20.00   -      -      -      -      -      -      -     udiv	x9, x22, x4
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davemgreen wrote:

This looks like it is going from best-case to worse-case time. The average is probably somewhere in the middle, closer to 6-8 depending on how you weight it.

https://github.com/llvm/llvm-project/pull/126707