[PATCH] D143425: Reland "[X86][ABI] Don't preserve return regs for preserve_all/preserve_most CCs""

[Anton Bikineev via Phabricator via llvm-commits]

AntonBikineev updated this revision to Diff 495675.
AntonBikineev added a comment.

(Add tests for checking RegMask and don't preserve %rax for sret functions)


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D143425/new/

https://reviews.llvm.org/D143425

Files:
  llvm/docs/LangRef.rst
  llvm/lib/Target/X86/X86CallingConv.td
  llvm/lib/Target/X86/X86ISelLowering.cpp
  llvm/test/CodeGen/X86/dynamic-regmask-preserve-all.ll
  llvm/test/CodeGen/X86/dynamic-regmask-preserve-most.ll
  llvm/test/CodeGen/X86/preserve_allcc64-ret-double.ll
  llvm/test/CodeGen/X86/preserve_allcc64.ll
  llvm/test/CodeGen/X86/preserve_mostcc64-ret-double.ll
  llvm/test/CodeGen/X86/preserve_mostcc64-sret.ll
  llvm/test/CodeGen/X86/preserve_mostcc64.ll

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