[all-commits] [llvm/llvm-project] 1b275a: [flang] -fno-integrated-as: set DisableIntegratedA...

[Fangrui Song via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 1b275a177fe7c2f74c3575bce2932ba37086a507
      https://github.com/llvm/llvm-project/commit/1b275a177fe7c2f74c3575bce2932ba37086a507
  Author: Fangrui Song <i at maskray.me>
  Date:   2026-04-13 (Mon, 13 Apr 2026)

  Changed paths:
    M clang/include/clang/Options/Options.td
    M clang/lib/Driver/ToolChains/Flang.cpp
    M flang/include/flang/Frontend/CodeGenOptions.def
    M flang/lib/Frontend/CompilerInstance.cpp
    M flang/lib/Frontend/CompilerInvocation.cpp
    M flang/test/Driver/fintegrated-as.f90

  Log Message:
  -----------
  [flang] -fno-integrated-as: set DisableIntegratedAS (#191346)

https://reviews.llvm.org/D124669 added -fno-integrated-as driver option
but not the fc1 option.
As a result, the backend kept MCAsmInfo::useIntegratedAssembler() set
and emitted LLVM-only directives such as `.prefalign`
(https://github.com/llvm/llvm-project/pull/155529), which GNU as
rejects:

```
a.s: Assembler messages:
a.s: Error: unknown pseudo-op: `.prefalign'
```

Follow clang and introduce fc1 -no-integrated-as to set
`CodeGenOpts.DisableIntegratedAS` and
llvm::TargetOptions::DisableIntegratedAS.



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