Optimize layout of function arguments in the Rust ABI - take 2 - #97559

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Urgau wants to merge 12 commits into

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Urgau:fn-args-abi-optimization

Commits on Jul 5, 2022

Simplify the code of fixup by making it's code flow more natural
Urgau
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374bc27
Don't aggregate homogeneous floats in the Rust ABI
Urgau
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bf97e79
Test that target feature mix up with homogeneous floats is sound
Urgau
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dcc75bf
Fix some codegen tests
Urgau
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ec16a32
Use simpler heuristic for determining if a layout only floats
Urgau
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9ed05ed
Use nbdd0121 suggestion for reducing the perf impact
Urgau
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f1c72be
Remove undefined unlikely! macro
Urgau
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1be1d4a
Revert "Use nbdd0121 suggestion for reducing the perf impact"
Urgau
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b2fba9a
Let LLVM also handle small aggregate
Urgau
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a84f4c9
Revert "Revert "Use nbdd0121 suggestion for reducing the perf impact""
Urgau
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0c1451c
Retry with the homogeneous aggregate concept
Urgau
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c7e8880
Revert max_by_val_size * 2
Urgau
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683e13f