[all-commits] [llvm/llvm-project] 5e8464: [Clang] Fix nomerge attribute not working with __b...

[Zequan Wu via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 5e84646982d1ec9bc94e48dde4b47f03c044a156
      https://github.com/llvm/llvm-project/commit/5e84646982d1ec9bc94e48dde4b47f03c044a156
  Author: Zequan Wu <zequanwu at google.com>
  Date:   2024-08-01 (Thu, 01 Aug 2024)

  Changed paths:
    M clang/lib/CodeGen/CGExpr.cpp
    M clang/test/CodeGen/attr-nomerge.cpp
    M llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
    M llvm/test/CodeGen/X86/nomerge.ll

  Log Message:
  -----------
  [Clang] Fix nomerge attribute not working with __builtin_trap(), __debugbreak(), __builtin_verbose_trap() (#101549)

1. It fixes the problem that llvm.trap() not getting the nomerge
attribute.
2. It sets nomerge flag for the node if the instruction has nomerge
arrtibute.

This is a copy of https://reviews.llvm.org/D146164. This only attempts
to fix `nomerge` for `__builtin_trap()`, `__debugbreak()`,
`__builtin_verbose_trap()`, not working for non-trap builtins.

Fixes #53011



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