[all-commits] [llvm/llvm-project] 0f494f: [codegen]Ensure __builtin_trap() has an unreachabl...

[Vy Nguyen via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 0f494fc6576600f79bbcdb5314fbed6c13da7395
      https://github.com/llvm/llvm-project/commit/0f494fc6576600f79bbcdb5314fbed6c13da7395
  Author: Vy Nguyen <1762963+oontvoo at users.noreply.github.com>
  Date:   2026-07-15 (Wed, 15 Jul 2026)

  Changed paths:
    M clang/lib/CodeGen/CGExpr.cpp
    M clang/test/CodeGen/amdgpu-builtin-is-invocable.c
    M clang/test/CodeGen/amdgpu-builtin-processor-is.c
    M clang/test/CodeGen/attr-nomerge.cpp
    A clang/test/CodeGen/builtin-trap.c
    M clang/test/CodeGen/pr53127.cpp
    M clang/test/CodeGenCXX/microsoft-abi-byval-vararg.cpp
    M clang/test/CodeGenCXX/microsoft-vector-deleting-dtors2.cpp
    M clang/test/CodeGenCXX/trap-fnattr.cpp
    M clang/test/CodeGenCXX/vararg-non-pod.cpp
    M clang/test/DebugInfo/CXX/verbose-trap.cpp
    M clang/test/Headers/gpuintrin.c
    M clang/test/OpenMP/spirv_target_codegen_noexceptions.cpp
    M compiler-rt/test/profile/gcov-__gcov_flush-terminate.c

  Log Message:
  -----------
  [codegen]Ensure __builtin_trap() has an unreachable (#197789)

```
  void test2() {
    __builtin_trap();
}
```

Previously, this would generate this:

```
; Function Attrs: mustprogress noinline nounwind optnone uwtable
define dso_local void @test2()() #2 !dbg !14 {
  call void @llvm.trap(), !dbg !15
  ret void, !dbg !16
}
```


Now we'll have `unreachable` after the trap 

```
; Function Attrs: noinline nounwind optnone uwtable
define dso_local void @test2() #0 {
  call void @llvm.trap()
  unreachable
}

```



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