diff --git a/llvm/lib/Analysis/MemoryDependenceAnalysis.cpp b/llvm/lib/Analysis/MemoryDependenceAnalysis.cpp --- a/llvm/lib/Analysis/MemoryDependenceAnalysis.cpp +++ b/llvm/lib/Analysis/MemoryDependenceAnalysis.cpp @@ -344,7 +344,9 @@ // If we hit load/store with the same invariant.group metadata (and the // same pointer operand) we can assume that value pointed by pointer // operand didn't change. - if ((isa(U) || isa(U)) && + if ((isa(U) || + (isa(U) && + cast(U)->getPointerOperand() == Ptr)) && U->hasMetadata(LLVMContext::MD_invariant_group)) ClosestDependency = GetClosestDependency(ClosestDependency, U); } diff --git a/llvm/test/Transforms/GVN/storeinvgroup.ll b/llvm/test/Transforms/GVN/storeinvgroup.ll new file mode 100644 --- /dev/null +++ b/llvm/test/Transforms/GVN/storeinvgroup.ll @@ -0,0 +1,21 @@ +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py +; RUN: opt -gvn -S -o - < %s | FileCheck %s + +define double @code(double* %a1) { +; CHECK-LABEL: @code( +; CHECK-NEXT: entry: +; CHECK-NEXT: [[META:%.*]] = alloca double*, align 8 +; CHECK-NEXT: store double 1.234500e+00, double* [[A1:%.*]], align 8 +; CHECK-NEXT: store double* [[A1]], double** [[META]], align 8, !invariant.group !0 +; CHECK-NEXT: ret double 1.234500e+00 +; +entry: + %meta = alloca double* + store double 1.23450000e+00, double* %a1, align 8 + store double* %a1, double** %meta, align 8, !invariant.group !0 + %iload = load double, double* %a1, align 8, !invariant.group !1 + ret double %iload +} + +!0 = distinct !{} +!1 = distinct !{}