[llvm] [AArch64] Set Olympus cache line size to 64B. (PR #200776)

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llvmorg-github-actions[bot] wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-backend-aarch64

Author: Ricardo Jesus (rj-jesus)

<details>
<summary>Changes</summary>

This should be set to enable more interchange, for instance.

It could also be made the default for other CPUs if preferred.

---
Full diff: https://github.com/llvm/llvm-project/pull/200776.diff


1 Files Affected:

- (modified) llvm/lib/Target/AArch64/AArch64Subtarget.cpp (+1) 


``````````diff
diff --git a/llvm/lib/Target/AArch64/AArch64Subtarget.cpp b/llvm/lib/Target/AArch64/AArch64Subtarget.cpp
index d45a6d5496399..241afc50dde6d 100644
--- a/llvm/lib/Target/AArch64/AArch64Subtarget.cpp
+++ b/llvm/lib/Target/AArch64/AArch64Subtarget.cpp
@@ -334,6 +334,7 @@ void AArch64Subtarget::initializeProperties(bool HasMinSize) {
     MinPrefetchStride = 1024;
     break;
   case Olympus:
+    CacheLineSize = 64;
     EpilogueVectorizationMinVF = 8;
     ScatterOverhead = 13;
     PrefFunctionAlignment = Align(16);

``````````

</details>


https://github.com/llvm/llvm-project/pull/200776