[flang-commits] [clang] [flang] [flang][driver] Support -gdwarf-N option. (PR #158314)

[Tarun Prabhu via flang-commits]

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@@ -0,0 +1,27 @@
+// RUN: %flang -### -S %s -g -gdwarf-5  2>&1 \
+// RUN:             | FileCheck --check-prefix=CHECK-WITH-G-DWARF5 %s
+// RUN: %flang -### -S %s -g1 -gdwarf-5  2>&1 \
+// RUN:             | FileCheck --check-prefix=CHECK-WITH-G1-DWARF5 %s
+// RUN: %flang -### -S %s -gdwarf-5  2>&1 \
+// RUN:             | FileCheck --check-prefix=CHECK-WITHOUT-G-DWARF5 %s
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tarunprabhu wrote:

Perhaps both `CHECK-WITH-G-DWARF5` and `CHECK-WITHOUT-G-DWARF5` could be replaced with a single `CHECK-DWARF5`. By swapping the tests, it becomes more obvious that in one case, `-g` is provided, while in the other, it is not. Since the check prefix now has the same name, it is clear that the expected behavior is the same. 
For instance:

```suggestion
// RUN: %flang -### -S %s -g -gdwarf-5  2>&1 \
// RUN:             | FileCheck --check-prefix=CHECK-DWARF5 %s
// RUN: %flang -### -S %s -gdwarf-5  2>&1 \
// RUN:             | FileCheck --check-prefix=CHECK-DWARF5 %s
// RUN: %flang -### -S %s -g1 -gdwarf-5  2>&1 \
// RUN:             | FileCheck --check-prefix=CHECK-WITH-G1-DWARF5 %s
```

https://github.com/llvm/llvm-project/pull/158314