[PATCH] D130100: [aarch64-mi-peepholeopt] Combine a gpr->fp copy of load gpr into load gp directly.

[Mingming Liu via Phabricator via llvm-commits]

mingmingl created this revision.
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Pattern before:

%1:gpr64 = LDRXui ...
%2:fpr64 = COPY %1:gpr64

Pattern after:
%1:gpr64 = LDRDui

The pattern show up when elements are read from arrays, and moved into floating
point registers or SIMD registers for calculation.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D130100

Files:
  llvm/lib/Target/AArch64/AArch64MIPeepholeOpt.cpp
  llvm/test/CodeGen/AArch64/arm64-subvector-extend.ll
  llvm/test/CodeGen/AArch64/arm64-vmul.ll
  llvm/test/CodeGen/AArch64/dp1.ll
  llvm/test/CodeGen/AArch64/neon-dotpattern.ll
  llvm/test/CodeGen/AArch64/neon-extadd.ll

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