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# 660cae84 24-Jun-2021 Jon Chesterfield <[email protected]>

Revert "[AMDGPU] [IndirectCalls] Don't propagate attributes to address taken functions and their callees"

This reverts commit 6a3beb1f68d6791a4cd0190f68b48510f754a00a.
Test case that triggers an inf

Revert "[AMDGPU] [IndirectCalls] Don't propagate attributes to address taken functions and their callees"

This reverts commit 6a3beb1f68d6791a4cd0190f68b48510f754a00a.
Test case that triggers an infinite loop before the revert is at
the review for D103138.

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Revision tags: llvmorg-12.0.1-rc2
# 6a3beb1f 26-May-2021 madhur13490 <[email protected]>

[AMDGPU] [IndirectCalls] Don't propagate attributes to address taken functions and their callees

Don't propagate launch bound related attributes to
address taken functions and their callees. The ide

[AMDGPU] [IndirectCalls] Don't propagate attributes to address taken functions and their callees

Don't propagate launch bound related attributes to
address taken functions and their callees. The idea
is to do a traversal over the call graph starting at
address taken functions and erase the attributes
set by previous logic i.e. process().

This two phase approach makes sure that we don't
miss out on deep nested callees from address taken
functions as a function might be called directly as
well as indirectly.

This patch is also reattempt to D94585 as latent issues
are fixed in hasAddressTaken function in the recent
past.

Reviewed By: arsenm

Differential Revision: https://reviews.llvm.org/D103138

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# fcd32d62 26-May-2021 jweightma <[email protected]>

[AMDGPU] Fix function pointer argument bug in AMDGPU Propagate Attributes pass.

This patch fixes a bug in the AMDGPU Propagate Attributes pass where a call
instruction with a function pointer argume

[AMDGPU] Fix function pointer argument bug in AMDGPU Propagate Attributes pass.

This patch fixes a bug in the AMDGPU Propagate Attributes pass where a call
instruction with a function pointer argument is identified as a user of the
passed function, and illegally replaces the called function of the
instruction with the function argument.

For example, given functions f and g with appropriate types, the following
illegal transformation could occur without this fix:
call void @f(void ()* @g)
-->
call void @g(void ()* @g.1)

The solution introduced in this patch is to prevent the cloning and
substitution if the instruction's called function and the function which
might be cloned do not match.

Reviewed By: arsenm, madhur13490

Differential Revision: https://reviews.llvm.org/D101847

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