Reapply "[AMDGPU] Still set up the two SGPRs for queue ptr even it is COV5 (#112403)"

This reverts commit ca33649abe5fad93c57afef54e43ed9b3249cd86.

Revert "[AMDGPU] Still set up the two SGPRs for queue ptr even it is COV5 (#112403)"

This reverts commit e215a1e27d84adad2635a52393621eb4fa439dc9 as it broke both
hip and openmp buildbots.

[AMDGPU] Still set up the two SGPRs for queue ptr even it is COV5 (#112403)

AMDGPU: Handle new atomicrmw metadata for fadd case (#96760)

This is the most complex atomicrmw support case. Note we don't have
accurate remarks for all of the cases, which I'm planning on fixing
i

AMDGPU: Handle new atomicrmw metadata for fadd case (#96760)

This is the most complex atomicrmw support case. Note we don't have
accurate remarks for all of the cases, which I'm planning on fixing
in a later change with more precise wording.

Continue respecting amdgpu-unsafe-fp-atomics until it's eventual removal.
Also seems to fix a few cases not interpreting amdgpu-unsafe-fp-atomics
appropriately aaggressively.

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Reapply "AMDGPU: Move attributor into optimization pipeline (#83131)" and follow up commit "clang/AMDGPU: Defeat attribute optimization in attribute test" (#98851)

This reverts commit adaff46d087799

Reapply "AMDGPU: Move attributor into optimization pipeline (#83131)" and follow up commit "clang/AMDGPU: Defeat attribute optimization in attribute test" (#98851)

This reverts commit adaff46d087799072438dd744b038e6fd50a2d78.

Drop the -O3 checks from default-attributes.hip. I don't know why they
are different on some bots but reverting this is far too disruptive.

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Revert "AMDGPU: Move attributor into optimization pipeline (#83131)" and follow up commit "clang/AMDGPU: Defeat attribute optimization in attribute test" (#98851)

This reverts commits 677cc15e0ff2e0

Revert "AMDGPU: Move attributor into optimization pipeline (#83131)" and follow up commit "clang/AMDGPU: Defeat attribute optimization in attribute test" (#98851)

This reverts commits 677cc15e0ff2e0e6aa30538eb187990a6a8f53c0 and
78bc1b64a6dc3fb6191355a5e1b502be8b3668e7.

The test CodeGenHIP/default-attributes.hip is failing on multiple bots
even after the attempted fix including the following:
- https://lab.llvm.org/buildbot/#/builders/3/builds/1473
- https://lab.llvm.org/buildbot/#/builders/65/builds/1380
- https://lab.llvm.org/buildbot/#/builders/161/builds/595
- https://lab.llvm.org/buildbot/#/builders/154/builds/1372
- https://lab.llvm.org/buildbot/#/builders/133/builds/1547
- https://lab.llvm.org/buildbot/#/builders/81/builds/755
- https://lab.llvm.org/buildbot/#/builders/40/builds/570
- https://lab.llvm.org/buildbot/#/builders/13/builds/748
- https://lab.llvm.org/buildbot/#/builders/12/builds/1845
- https://lab.llvm.org/buildbot/#/builders/11/builds/1695
- https://lab.llvm.org/buildbot/#/builders/190/builds/1829
- https://lab.llvm.org/buildbot/#/builders/193/builds/962
- https://lab.llvm.org/buildbot/#/builders/23/builds/991
- https://lab.llvm.org/buildbot/#/builders/144/builds/2256
- https://lab.llvm.org/buildbot/#/builders/46/builds/1614

These bots have been broken for a day, so reverting to get everything
back to green.

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AMDGPU: Move attributor into optimization pipeline (#83131)

Removing it from the codegen pipeline induces a lot of test churn
because llc is no longer optimizing out implicit arguments to kernels.

AMDGPU: Move attributor into optimization pipeline (#83131)

Removing it from the codegen pipeline induces a lot of test churn
because llc is no longer optimizing out implicit arguments to kernels.

Mostly mechanical, but there are some creative test updates. I preferred
to take the changes as-is in tests where the ABI isn't relevant. In
cases where it's more relevant, or the optimize out logic was too
ingrained in the test, I pre-run the optimization. Some cases manually
add attributes to disable inputs.

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[AMDGPU] Re-enable atomic optimization of uniform fadd/fsub with result (#97604)

Fix various problems to do with the first active lane of the result of
optimized fp atomics, as explained in the com

[AMDGPU] Re-enable atomic optimization of uniform fadd/fsub with result (#97604)

Fix various problems to do with the first active lane of the result of
optimized fp atomics, as explained in the comment.

Fixes #97554

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[AMDGPU] Disable atomic optimization of fadd/fsub with result (#96479)

An atomic fadd instruction like this should return %x:

; value at %ptr is %x
%r = atomicrmw fadd ptr %ptr, float %y

[AMDGPU] Disable atomic optimization of fadd/fsub with result (#96479)

An atomic fadd instruction like this should return %x:

; value at %ptr is %x
%r = atomicrmw fadd ptr %ptr, float %y

After atomic optimization, if %y is uniform, the result is calculated
as %r = %x + * %y * +0.0. This has a couple of problems:

1. If %y is Inf or NaN, this will return NaN instead of %x.
2. If %x is -0.0 and %y is positive, this will return +0.0 instead of
-0.0.

Avoid these problems by disabling the "%y is uniform" path if there are
any uses of the result.

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AMDGPU: Cleanup FP atomicrmw tests and cover fmin/fmax (#95131)

We apparently are missing codegen support for atomicrmw fmin/fmax. Also
clean up FP atomicrmw tests
to be more consistent and compre

AMDGPU: Cleanup FP atomicrmw tests and cover fmin/fmax (#95131)

We apparently are missing codegen support for atomicrmw fmin/fmax. Also
clean up FP atomicrmw tests
to be more consistent and comprehensively test the relevant cases

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