[llvm] [LoopVectorize] Don't speculate an early-exit trip count that may cause UB (PR #219893)

[Luke Lau via llvm-commits]

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@@ -2,6 +2,7 @@
 ; RUN: opt -p loop-vectorize -force-vector-width=4 -force-vector-interleave=1 -S %s | FileCheck %s
 
 declare i32 @llvm.cttz.i32(i32, i1 immarg)
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lukel97 wrote:

Intrinsics don't need to be declared

https://github.com/llvm/llvm-project/pull/219893