[llvm] [GlobalISel] Add G_SUB for computeNumSignBits (PR #158384)

[Yatao Wang via llvm-commits]

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@@ -1,5 +1,5 @@
 # NOTE: Assertions have been autogenerated by utils/update_givaluetracking_test_checks.py UTC_ARGS: --version 5
-# RUN: llc -mtriple aarch64 -passes="print<gisel-value-tracking>" %s -o - 2>&1 | FileCheck %s
+# RUN: llc -mtriple=aarch64 -passes='print<gisel-value-tracking>' -filetype=null %s 2>&1 | FileCheck %s
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ningxinr wrote:

Ah done! Thanks for the clarification, Simon! I don't think I have tried running `update_test_checks.py` on windows at all. 

https://github.com/llvm/llvm-project/pull/158384