[llvm] [RISCV][NFC] Don't set UnrollAndJamInnerLoopThreshold in getUnrollingPreferences (PR #118572)

Michael Maitland via llvm-commits llvm-commits at lists.llvm.org
Tue Dec 3 17:05:35 PST 2024


https://github.com/michaelmaitland created https://github.com/llvm/llvm-project/pull/118572

This has no effect since its the default value used in llvm::gatherUnrollingPreferences.

>From b756969333103278539a96e241cd9cbd740c6559 Mon Sep 17 00:00:00 2001
From: Michael Maitland <michaeltmaitland at gmail.com>
Date: Tue, 3 Dec 2024 17:03:37 -0800
Subject: [PATCH] [RISCV][NFC] Don't set UnrollAndJamInnerLoopThreshold in
 getUnrollingPreferences

This has no effect since its the default value used in
llvm::gatherUnrollingPreferences.
---
 llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp | 1 -
 1 file changed, 1 deletion(-)

diff --git a/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp b/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp
index aed476db1956fa..4e9d79d8dfd2a8 100644
--- a/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp
+++ b/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp
@@ -2242,7 +2242,6 @@ void RISCVTTIImpl::getUnrollingPreferences(Loop *L, ScalarEvolution &SE,
   UP.Runtime = true;
   UP.UnrollRemainder = true;
   UP.UnrollAndJam = true;
-  UP.UnrollAndJamInnerLoopThreshold = 60;
 
   // Force unrolling small loops can be very useful because of the branch
   // taken cost of the backedge.



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