[llvm] [SCCP] Refine trunc with nsw/nuw flags (PR #87926)

[via llvm-commits]

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@@ -0,0 +1,179 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
+; RUN: opt -passes=ipsccp -S %s | FileCheck %s
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XChy wrote:

Oh, sorry for merging this patch without noticing this suggestion. Changing ipsccp to sccp would cause test `range_from_sge_sle` to lose `nuw` flag. I think the test coverage of ipsccp is needed here.

https://github.com/llvm/llvm-project/pull/87926