[flang-commits] [clang] [flang] [Flang][Driver]Implemented support for option -momit-leaf-frame-pointer/-mno-omit-leaf-frame-pointer in flang (PR #216700)

[Kaviya Rajendiran via flang-commits]

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@@ -10,3 +10,19 @@
 
 ! RUN: %flang -fno-omit-frame-pointer --target=x86-none-none -fsyntax-only -### %s -o %t 2>&1  | FileCheck %s --check-prefix=CHECK-ALLFP
 ! CHECK-ALLFP: "-fc1"{{.*}}"-mframe-pointer=all"
+
+! RUN: %flang -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer --target=aarch64-none-none -fsyntax-only -### %s -o %t 2>&1  | FileCheck %s --check-prefix=CHECK-FRAME-POINTER-ALL
+! CHECK-FRAME-POINTER-ALL: "-fc1"{{.*}}"-mframe-pointer=all"
+
+! RUN: %flang -fno-omit-frame-pointer -momit-leaf-frame-pointer --target=x86_64-unknown-linux-gnu -fsyntax-only -### %s -o %t 2>&1  | FileCheck %s --check-prefix=CHECK-X86-NONLEAF
+! CHECK-X86-NONLEAF: "-fc1"{{.*}}"-mframe-pointer=non-leaf-no-reserve"
+
+! RUN: %flang -fno-omit-frame-pointer -momit-leaf-frame-pointer -mno-omit-leaf-frame-pointer --target=x86_64-unknown-linux-gnu -fsyntax-only -### %s -o %t 2>&1  | FileCheck %s --check-prefix=CHECK-LAST-WINS
+! CHECK-LAST-WINS: "-fc1"{{.*}}"-mframe-pointer=all"
+
+! Without -fno-omit-frame-pointer the leaf option is silently allowed but has no effect, matching Clang's behavior.
+! RUN: %flang -momit-leaf-frame-pointer --target=x86_64-unknown-linux-gnu -O2 -fsyntax-only -### %s -o %t 2>&1  | FileCheck %s --check-prefix=CHECK-LEAF-ONLY
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kaviya2510 wrote:

Yes its needed. Other than `-O0`, the behaviour of options change for `-O1/-O2/-O3`

https://github.com/llvm/llvm-project/pull/216700