From cdc20ff6a7f12464aed70d9b6e67ea07da9f0399 Mon Sep 17 00:00:00 2001 From: Dimitry Andric Date: Tue, 9 Jan 2024 21:00:28 +0100 Subject: Merge llvm-project main llvmorg-18-init-16595-g7c00a5be5cde This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and openmp to llvm-project main llvmorg-18-init-16595-g7c00a5be5cde. PR: 276104 MFC after: 1 month (cherry picked from commit 1db9f3b21e39176dd5b67cf8ac378633b172463e) --- .../lib/Transforms/Vectorize/VPlanTransforms.cpp | 23 +++++++++++++--------- 1 file changed, 14 insertions(+), 9 deletions(-) (limited to 'contrib/llvm-project/llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp') diff --git a/contrib/llvm-project/llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp b/contrib/llvm-project/llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp index 33132880d5a4..5c430620a2dc 100644 --- a/contrib/llvm-project/llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp +++ b/contrib/llvm-project/llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp @@ -829,15 +829,20 @@ static void simplifyRecipe(VPRecipeBase &R, VPTypeAnalysis &TypeInfo) { Type *ATy = TypeInfo.inferScalarType(A); if (TruncTy == ATy) { Trunc->replaceAllUsesWith(A); - } else if (ATy->getScalarSizeInBits() < TruncTy->getScalarSizeInBits()) { - auto *VPC = - new VPWidenCastRecipe(Instruction::CastOps(ExtOpcode), A, TruncTy); - VPC->insertBefore(&R); - Trunc->replaceAllUsesWith(VPC); - } else if (ATy->getScalarSizeInBits() > TruncTy->getScalarSizeInBits()) { - auto *VPC = new VPWidenCastRecipe(Instruction::Trunc, A, TruncTy); - VPC->insertBefore(&R); - Trunc->replaceAllUsesWith(VPC); + } else { + // Don't replace a scalarizing recipe with a widened cast. + if (isa(&R)) + break; + if (ATy->getScalarSizeInBits() < TruncTy->getScalarSizeInBits()) { + auto *VPC = + new VPWidenCastRecipe(Instruction::CastOps(ExtOpcode), A, TruncTy); + VPC->insertBefore(&R); + Trunc->replaceAllUsesWith(VPC); + } else if (ATy->getScalarSizeInBits() > TruncTy->getScalarSizeInBits()) { + auto *VPC = new VPWidenCastRecipe(Instruction::Trunc, A, TruncTy); + VPC->insertBefore(&R); + Trunc->replaceAllUsesWith(VPC); + } } #ifndef NDEBUG // Verify that the cached type info is for both A and its users is still -- cgit v1.2.3