https://sourceware.org/bugzilla/show_bug.cgi?id=32187
Bug ID: 32187
Summary: scfi: allow reg-based sp update pattern
Product: binutils
Version: 2.43
Status: NEW
Severity: normal
Priority: P2
Component: gas
Assignee: unassigned at sourceware dot org
Reporter: indu.bhagat at oracle dot com
Target Milestone: ---
In aarch64, the following code pattern may be used for managing stack
statically:
mov x16, IMM
add sp, sp, x16
Currently, when using --scfi=experimental, the above pattern causes:
Error: SCFI: unsupported stack manipulation pattern
Error: SCFI: forward pass failed for func 'XX'
Supporting this pattern in SCFI is desirable because this code pattern may be
prevalent in practice.
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