[HLSL] Implement HLSL Flat casting (excluding splat cases)#118842

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spall merged 19 commits intollvm:mainfrom

spall:issue-100609

Feb 6, 2025

Commits on Dec 5, 2024

Commits on Dec 6, 2024

address PR comments add some todos that need to be addressed
spall
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Commits on Dec 7, 2024

new tests
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Commits on Dec 9, 2024

Self Review.
spall
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Commits on Dec 11, 2024

self review continued. Make FlattenAccessAndTypes not recursive and handle records correctly.
spall
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Commits on Dec 20, 2024

two test showing truncation to scalar
spall
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Commits on Jan 22, 2025

Commits on Feb 1, 2025

Commits on Feb 5, 2025