[all-commits] [llvm/llvm-project] 719341: [TTI] Provide conservative legality + costs for @l...

[Florian Hahn via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 719341a64c02261b7b43e4aa6a25f597cca8626d
      https://github.com/llvm/llvm-project/commit/719341a64c02261b7b43e4aa6a25f597cca8626d
  Author: Florian Hahn <flo at fhahn.com>
  Date:   2026-09-27 (Sun, 27 Sep 2026)

  Changed paths:
    M llvm/include/llvm/Analysis/TargetTransformInfo.h
    M llvm/include/llvm/Analysis/TargetTransformInfoImpl.h
    M llvm/include/llvm/CodeGen/BasicTTIImpl.h
    M llvm/lib/Analysis/TargetTransformInfo.cpp
    M llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
    M llvm/lib/Target/AArch64/AArch64TargetTransformInfo.h
    M llvm/test/Analysis/CostModel/AArch64/speculative-load.ll
    M llvm/test/Analysis/CostModel/X86/speculative-load.ll

  Log Message:
  -----------
  [TTI] Provide conservative legality + costs for @llvm.speculative.load. (#180036)

Add TTI support for @llvm.speculative.load, including cost and legaltiy
checking support.

The initial implementation for AArch64 checks if the loaded type is
<= 16 bytes, and only considers such cases legal due to MTE.

PR: 
https://github.com/llvm/llvm-project/pull/180036


Depends on https://github.com/llvm/llvm-project/pull/179642



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