[llvm] [RISCV][InsertVSETVLI] Remove redundant vsetvli by repeating the coalesce phase (PR #141298)

[Luke Lau via llvm-commits]

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+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 5
+# RUN: llc -mtriple=riscv64 -mattr=+v,+m,+b -O3 -start-after=riscv-isel -stop-after=riscv-insert-vsetvli %s -o - | FileCheck %s
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lukel97 wrote:

Can this be turned into just `llc -mtriple=riscv64 -mattr=+v,+m,+b -run-pass=liveintervals,riscv-insert-vsetvli`?

https://github.com/llvm/llvm-project/pull/141298