[PATCH] [ARM] Keep track of previous changes to the bit pattern stored HW_FP

[Renato Golin]

In http://reviews.llvm.org/D10395#188008, @rs wrote:

> Do you mean matching against the -cc1 command line?


Yes.

> There's no way for a test case to determine in which order the features come out of the StringMap and are processed.


That's perfectly fine.

> So I don't see how to write a test case that ensures the old code fails.




  // RUN: echo "clang -cc1 -target-feature +foo -target-feature -bar -target-feature +baz" | FileCheck %s
  // RUN: echo "clang -cc1 -target-feature +baz -target-feature -bar -target-feature +foo" | FileCheck %s
  // RUN: echo "clang -cc1 -target-feature +foo -target-feature +baz -target-feature -bar" | FileCheck %s
  
  // CHECK-DAG: -target-feature +foo
  // CHECK-DAG: -target-feature -bar
  // CHECK-DAG: -target-feature +baz


http://reviews.llvm.org/D10395

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