llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT--> @llvm/pr-subscribers-llvm-transforms Author: Florian Hahn (fhahn) <details> <summary>Changes</summary> As discussed in https://github.com/llvm/llvm-project/pull/92555 flip the default for the option added in https://github.com/llvm/llvm-project/pull/99536 to true. This restores the original behavior for the release branch to give the VPlan-based cost model more time to mature on main. --- Full diff: https://github.com/llvm/llvm-project/pull/100097.diff 2 Files Affected: - (modified) llvm/lib/Transforms/Vectorize/LoopVectorize.cpp (+1-1) - (modified) llvm/test/Transforms/LoopVectorize/RISCV/riscv-vector-reverse.ll (-2) ``````````diff diff --git a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp index 6d28b8fabe42e..68363abdb817a 100644 --- a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp +++ b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp @@ -206,7 +206,7 @@ static cl::opt<unsigned> VectorizeMemoryCheckThreshold( cl::desc("The maximum allowed number of runtime memory checks")); static cl::opt<bool> UseLegacyCostModel( - "vectorize-use-legacy-cost-model", cl::init(false), cl::Hidden, + "vectorize-use-legacy-cost-model", cl::init(true), cl::Hidden, cl::desc("Use the legacy cost model instead of the VPlan-based cost model. " "This option will be removed in the future.")); diff --git a/llvm/test/Transforms/LoopVectorize/RISCV/riscv-vector-reverse.ll b/llvm/test/Transforms/LoopVectorize/RISCV/riscv-vector-reverse.ll index fc310f4163082..1a78eaf644723 100644 --- a/llvm/test/Transforms/LoopVectorize/RISCV/riscv-vector-reverse.ll +++ b/llvm/test/Transforms/LoopVectorize/RISCV/riscv-vector-reverse.ll @@ -135,7 +135,6 @@ define void @vector_reverse_i64(ptr nocapture noundef writeonly %A, ptr nocaptur ; CHECK-NEXT: LV: Interleaving is not beneficial. ; CHECK-NEXT: LV: Found a vectorizable loop (vscale x 4) in <stdin> ; CHECK-NEXT: LEV: Epilogue vectorization is not profitable for this loop -; CHECK-NEXT: VF picked by VPlan cost model: vscale x 4 ; CHECK-NEXT: Executing best plan with VF=vscale x 4, UF=1 ; CHECK-NEXT: VPlan 'Final VPlan for VF={vscale x 4},UF>=1' { ; CHECK-NEXT: Live-in vp<%0> = VF * UF @@ -339,7 +338,6 @@ define void @vector_reverse_f32(ptr nocapture noundef writeonly %A, ptr nocaptur ; CHECK-NEXT: LV: Interleaving is not beneficial. ; CHECK-NEXT: LV: Found a vectorizable loop (vscale x 4) in <stdin> ; CHECK-NEXT: LEV: Epilogue vectorization is not profitable for this loop -; CHECK-NEXT: VF picked by VPlan cost model: vscale x 4 ; CHECK-NEXT: Executing best plan with VF=vscale x 4, UF=1 ; CHECK-NEXT: VPlan 'Final VPlan for VF={vscale x 4},UF>=1' { ; CHECK-NEXT: Live-in vp<%0> = VF * UF `````````` </details> https://github.com/llvm/llvm-project/pull/100097 _______________________________________________ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits
