================
@@ -10,3 +10,36 @@
! 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"
+
+! // =======
+
+! Default behavior in x86_64-unknown-linux-gnu, -mframe-pointer=all at -O0
level.
+
+! RUN: %flang -O0 --target=x86_64-unknown-linux-gnu -### %s 2>&1 | FileCheck
%s --check-prefix=CHECK-FRAME-POINTER-ALL
+! RUN: %flang -O0 -momit-leaf-frame-pointer --target=x86_64-unknown-linux-gnu
-### %s 2>&1 | FileCheck %s --check-prefix=CHECK-FRAME-POINTER-NON-LEAF
+! RUN: %flang -O0 -mno-omit-leaf-frame-pointer
--target=x86_64-unknown-linux-gnu -### %s 2>&1 | FileCheck %s
--check-prefix=CHECK-FRAME-POINTER-ALL
+! RUN: %flang -O0 -fomit-frame-pointer -momit-leaf-frame-pointer
--target=x86_64-unknown-linux-gnu -### %s 2>&1 | FileCheck %s
--check-prefix=CHECK-FRAME-POINTER-NONE
+! RUN: %flang -fno-omit-frame-pointer -momit-leaf-frame-pointer
-mno-omit-leaf-frame-pointer --target=x86_64-unknown-linux-gnu -### %s 2>&1 |
FileCheck %s --check-prefix=CHECK-FRAME-POINTER-ALL
+
+! Default behavior in x86_64-unknown-linux-gnu, -mframe-pointer=none at
-O1/-O2/-O3 level.
+! RUN: %flang --target=x86_64-unknown-linux-gnu -O2 -### %s 2>&1 | FileCheck
%s --check-prefix=CHECK-FRAME-POINTER-NONE
+
+! With -fno-omit-frame-pointer and -mno-omit-leaf-frame-pointer,
-mframe-pointer=all.
+! RUN: %flang -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer
--target=x86_64-unknown-linux-gnu -O2 -### %s 2>&1 | FileCheck %s
--check-prefix=CHECK-FRAME-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
-### %s -o %t 2>&1 | FileCheck %s --check-prefix=CHECK-FRAME-POINTER-NONE
+! RUN: %flang -fno-omit-frame-pointer --target=x86_64-unknown-linux-gnu -O2
-### %s -o %t 2>&1 | FileCheck %s --check-prefix=CHECK-FRAME-POINTER-ALL
+
+! RUN: %flang -fno-omit-frame-pointer -momit-leaf-frame-pointer
--target=x86_64-unknown-linux-gnu -O2 -### %s 2>&1 | FileCheck %s
--check-prefix=CHECK-FRAME-POINTER-NON-LEAF
+
+! Default behavior in aarch64-none-none, -mframe-pointer=non-leaf-no-reserve.
+! RUN: %flang -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer
--target=aarch64-none-none -### %s 2>&1 | FileCheck %s
--check-prefix=CHECK-FRAME-POINTER-ALL
+
+! CHECK-FRAME-POINTER-ALL: "-fc1"
+! CHECK-FRAME-POINTER-ALL-SAME: "-mframe-pointer=all"
+! CHECK-FRAME-POINTER-NON-LEAF: "-fc1"
+! CHECK-FRAME-POINTER-NON-LEAF-SAME: "-mframe-pointer=non-leaf-no-reserve"
----------------
tarunprabhu wrote:
Instead of replicating the check for `-fc1`, consider doing something like this:
```
FRAME-POINTER-COMMON: "-fc1"
FRAME-POINTER-NON-LEAF-SAME: "-mframe-pointer=non-leaf-no-reserve"
FRAME-POINTER-NONE-SAME: "-mframe-pointer=none"
```
IIUC, the `-SAME` checks work even if the previous match was against a
different prefix, as long as both matches are on the same line.
You would have to modify the run lines to check for multiple prefixes
```
RUN: ... | FileCheck %s --check-prefixes=FRAME-POINTER-COMMON,FRAME-POINTER-NONE
```
This is for your consideration. If you would prefer to stick with the current
approach, that is fine too.
https://github.com/llvm/llvm-project/pull/216700
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