[clang] document that by default FP turned off for ARM baremetal #122881
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@llvm/pr-subscribers-clang Author: Ties Stuij (stuij) ChangesAs per #117140. Full diff: https://github.com/llvm/llvm-project/pull/122881.diff 1 Files Affected:
diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst
index 794943b24a003c..663e7561f715c0 100644
--- a/clang/docs/ReleaseNotes.rst
+++ b/clang/docs/ReleaseNotes.rst
@@ -1076,6 +1076,8 @@ Arm and AArch64 Support
in leaf functions after enabling ``-fno-omit-frame-pointer``, you can do so by adding
the ``-momit-leaf-frame-pointer`` option.
+- For ARM baremetal targets, the frame pointer (FP) is now turned off by default.
+
- Support has been added for the following processors (-mcpu identifiers in parenthesis):
For AArch64:
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clang/docs/ReleaseNotes.rst
Outdated
| @@ -1076,6 +1076,8 @@ Arm and AArch64 Support | |||
| in leaf functions after enabling ``-fno-omit-frame-pointer``, you can do so by adding | |||
| the ``-momit-leaf-frame-pointer`` option. | |||
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| - For ARM baremetal targets, the frame pointer (FP) is now turned off by default. | |||
There was a problem hiding this comment.
I would move this before the one above and add to this "To enable the frame pointer use the -fno-omit-frame-pointer option.". I know it's stated again in the second one, but it answers the "how do I get the old way" question more obviously.
If I am not someone who ever cared to disable FP, I won't understand / care to understand what the leaf function stuff means.
| @@ -1071,6 +1071,10 @@ Arm and AArch64 Support | |||
| - Implementation of SVE2.1 and SME2.1 in accordance with the Arm C Language | |||
| Extensions (ACLE) is now available. | |||
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| - For ARM baremetal targets, the frame pointer (FP) is now turned off by | |||
| default. To turn on frame pointers for Arm baremetal targets, use | |||
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As per #117140.