[clang] [llvm] [CodeGenPrepare] Failure to hoist bitcast to legal type causes register splitting (PR #207568)

[Simon Pilgrim via llvm-commits]

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@@ -0,0 +1,60 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt -passes='require<profile-summary>,function(codegenprepare)' -mtriple=x86_64-unknown-linux-gnu -mattr=+avx2 -S < %s | FileCheck %s
+
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RKSimon wrote:

add SSE2 test coverage as well to test bitcasting to fewer (but multiple) vector registers

https://github.com/llvm/llvm-project/pull/207568