[Mlir-commits] [mlir] [mlir][OpenMP][NFC] use llvm::zip_equal for firstprivate copy region translation (PR #116416)

[Tom Eccles]

https://github.com/tblah created https://github.com/llvm/llvm-project/pull/116416

I think this is a bit easier to read.

>From cbe00a95fb55873d49f88b22cd91a9b742df94e6 Mon Sep 17 00:00:00 2001
From: Tom Eccles <tom.eccles at arm.com>
Date: Thu, 7 Nov 2024 17:48:30 +0000
Subject: [PATCH] [mlir][OpenMP][NFC] use llvm::zip_equal for firstprivate copy
 region translation

I think this is a bit easier to read.
---
 .../OpenMP/OpenMPToLLVMIRTranslation.cpp      | 34 ++++++++-----------
 1 file changed, 14 insertions(+), 20 deletions(-)

diff --git a/mlir/lib/Target/LLVMIR/Dialect/OpenMP/OpenMPToLLVMIRTranslation.cpp b/mlir/lib/Target/LLVMIR/Dialect/OpenMP/OpenMPToLLVMIRTranslation.cpp
index 5bf99535295c4f..6d942ddf68b1c5 100644
--- a/mlir/lib/Target/LLVMIR/Dialect/OpenMP/OpenMPToLLVMIRTranslation.cpp
+++ b/mlir/lib/Target/LLVMIR/Dialect/OpenMP/OpenMPToLLVMIRTranslation.cpp
@@ -1597,24 +1597,21 @@ convertOmpTaskOp(omp::TaskOp taskOp, llvm::IRBuilderBase &builder,
           splitBB(builder, /*CreateBranch=*/true, "omp.private.copy");
       builder.SetInsertPoint(copyBlock->getFirstNonPHIOrDbgOrAlloca());
     }
-    for (unsigned i = 0; i < privateBlockArgs.size(); ++i) {
-      if (privateDecls[i].getDataSharingType() !=
-          omp::DataSharingClauseType::FirstPrivate)
+    for (auto [decl, mlirVar, llvmVar] :
+         llvm::zip_equal(privateDecls, mlirPrivateVars, llvmPrivateVars)) {
+      if (decl.getDataSharingType() != omp::DataSharingClauseType::FirstPrivate)
         continue;
 
       // copyRegion implements `lhs = rhs`
-      Region &copyRegion = privateDecls[i].getCopyRegion();
+      Region &copyRegion = decl.getCopyRegion();
 
       // map copyRegion rhs arg
-      llvm::Value *nonPrivateVar =
-          moduleTranslation.lookupValue(taskOp.getPrivateVars()[i]);
+      llvm::Value *nonPrivateVar = moduleTranslation.lookupValue(mlirVar);
       assert(nonPrivateVar);
-      moduleTranslation.mapValue(privateDecls[i].getCopyMoldArg(),
-                                 nonPrivateVar);
+      moduleTranslation.mapValue(decl.getCopyMoldArg(), nonPrivateVar);
 
       // map copyRegion lhs arg
-      moduleTranslation.mapValue(privateDecls[i].getCopyPrivateArg(),
-                                 llvmPrivateVars[i]);
+      moduleTranslation.mapValue(decl.getCopyPrivateArg(), llvmVar);
 
       // in-place convert copy region
       builder.SetInsertPoint(builder.GetInsertBlock()->getTerminator());
@@ -1936,24 +1933,21 @@ convertOmpParallel(omp::ParallelOp opInst, llvm::IRBuilderBase &builder,
           splitBB(builder, /*CreateBranch=*/true, "omp.private.copy");
       builder.SetInsertPoint(copyBlock->getFirstNonPHIOrDbgOrAlloca());
     }
-    for (unsigned i = 0; i < privateBlockArgs.size(); ++i) {
-      if (privateDecls[i].getDataSharingType() !=
-          omp::DataSharingClauseType::FirstPrivate)
+    for (auto [decl, mlirVar, llvmVar] :
+         llvm::zip_equal(privateDecls, mlirPrivateVars, llvmPrivateVars)) {
+      if (decl.getDataSharingType() != omp::DataSharingClauseType::FirstPrivate)
         continue;
 
       // copyRegion implements `lhs = rhs`
-      Region &copyRegion = privateDecls[i].getCopyRegion();
+      Region &copyRegion = decl.getCopyRegion();
 
       // map copyRegion rhs arg
-      llvm::Value *nonPrivateVar =
-          moduleTranslation.lookupValue(opInst.getPrivateVars()[i]);
+      llvm::Value *nonPrivateVar = moduleTranslation.lookupValue(mlirVar);
       assert(nonPrivateVar);
-      moduleTranslation.mapValue(privateDecls[i].getCopyMoldArg(),
-                                 nonPrivateVar);
+      moduleTranslation.mapValue(decl.getCopyMoldArg(), nonPrivateVar);
 
       // map copyRegion lhs arg
-      moduleTranslation.mapValue(privateDecls[i].getCopyPrivateArg(),
-                                 llvmPrivateVars[i]);
+      moduleTranslation.mapValue(decl.getCopyPrivateArg(), llvmVar);
 
       // in-place convert copy region
       builder.SetInsertPoint(builder.GetInsertBlock()->getTerminator());