[all-commits] [llvm/llvm-project] ac0bc2: [OpenACC][CIR] Reduction combiner lowering for min...

[Erich Keane via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ac0bc20c94738a473522a1c7b7ea37ab180a769a
      https://github.com/llvm/llvm-project/commit/ac0bc20c94738a473522a1c7b7ea37ab180a769a
  Author: Erich Keane <ekeane at nvidia.com>
  Date:   2025-10-20 (Mon, 20 Oct 2025)

  Changed paths:
    M clang/include/clang/Basic/DiagnosticSemaKinds.td
    M clang/lib/CIR/CodeGen/CIRGenOpenACCRecipe.cpp
    M clang/lib/Sema/SemaOpenACC.cpp
    M clang/test/CIR/CodeGenOpenACC/combined-reduction-clause-default-ops.cpp
    M clang/test/CIR/CodeGenOpenACC/combined-reduction-clause-float.cpp
    M clang/test/CIR/CodeGenOpenACC/combined-reduction-clause-inline-ops.cpp
    M clang/test/CIR/CodeGenOpenACC/combined-reduction-clause-int.cpp
    M clang/test/CIR/CodeGenOpenACC/combined-reduction-clause-outline-ops.cpp
    M clang/test/CIR/CodeGenOpenACC/compute-reduction-clause-default-ops.c
    M clang/test/CIR/CodeGenOpenACC/compute-reduction-clause-default-ops.cpp
    M clang/test/CIR/CodeGenOpenACC/compute-reduction-clause-float.c
    M clang/test/CIR/CodeGenOpenACC/compute-reduction-clause-float.cpp
    M clang/test/CIR/CodeGenOpenACC/compute-reduction-clause-inline-ops.cpp
    M clang/test/CIR/CodeGenOpenACC/compute-reduction-clause-int.c
    M clang/test/CIR/CodeGenOpenACC/compute-reduction-clause-int.cpp
    M clang/test/CIR/CodeGenOpenACC/compute-reduction-clause-outline-ops.cpp
    M clang/test/CIR/CodeGenOpenACC/compute-reduction-clause-unsigned-int.c
    M clang/test/CIR/CodeGenOpenACC/loop-reduction-clause-default-ops.cpp
    M clang/test/CIR/CodeGenOpenACC/loop-reduction-clause-float.cpp
    M clang/test/CIR/CodeGenOpenACC/loop-reduction-clause-inline-ops.cpp
    M clang/test/CIR/CodeGenOpenACC/loop-reduction-clause-int.cpp
    M clang/test/CIR/CodeGenOpenACC/loop-reduction-clause-outline-ops.cpp
    M clang/test/SemaOpenACC/combined-construct-reduction-clause.cpp
    M clang/test/SemaOpenACC/compute-construct-reduction-clause.c
    M clang/test/SemaOpenACC/compute-construct-reduction-clause.cpp

  Log Message:
  -----------
  [OpenACC][CIR] Reduction combiner lowering for min/max (#163656)

These two are lowered as if they are the expression: LHS = (LHS < RHS )
? RHS : LHS;
and
LHS = (LHS < RHS ) ? LHS : RHS;

This patch generates these expressions and ensures they are properly
emitted into IR.

Note: this is dependent on
https://github.com/llvm/llvm-project/pull/163580
and cannot be merged until that one is (or the tests will fail).



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