[llvm] [LV] Scale block costs using BranchFrequencyInfo (PR #71793)

[Florian Hahn via llvm-commits]

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@@ -0,0 +1,113 @@
+; RUN: opt -mtriple=riscv64 -mattr=+v -riscv-v-vector-bits-max=128 -riscv-v-register-bit-width-lmul=1 -passes='require<profile-summary>,loop-vectorize' -debug-only=loop-vectorize -disable-output < %s 2>&1 | FileCheck %s
+
+; Check that branch weights make a difference when computing cost of scalar loop
+
+define void @foo_with_wts(ptr %A, ptr %B, i32 %n) {
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fhahn wrote:

Could you add a comment describing the test in more detail, in particular the frequency for the `if.then` block?

https://github.com/llvm/llvm-project/pull/71793