diff --git a/llvm/lib/Transforms/Scalar/SROA.cpp b/llvm/lib/Transforms/Scalar/SROA.cpp
index 1d486a3e74fd1..0440805d484a1 100644
--- a/llvm/lib/Transforms/Scalar/SROA.cpp
+++ b/llvm/lib/Transforms/Scalar/SROA.cpp
@@ -3488,11 +3488,62 @@ class AggLoadStoreRewriter : public InstVisitor<AggLoadStoreRewriter, bool> {
     return true;
   }
 
+  // Fold gep (phi ptr1, ptr2) => phi gep(ptr1), gep(ptr2)
+  bool foldGEPPhi(GetElementPtrInst &GEPI) {
+    if (!GEPI.hasAllConstantIndices())
+      return false;
+
+    PHINode *PHI = cast<PHINode>(GEPI.getPointerOperand());
+    if (llvm::any_of(PHI->incoming_values(), [](Value *In)
+          { Instruction *I = dyn_cast<Instruction>(In);
+            return !I || isa<GetElementPtrInst>(I) || isa<PHINode>(I) ||
+                   !I->getParent()->isLegalToHoistInto();
+          }))
+      return false;
+
+    LLVM_DEBUG(dbgs() << "  Rewriting gep(phi) -> phi(gep):"
+                      << "\n    original: " << *PHI
+                      << "\n              " << GEPI
+                      << "\n          to: ");
+
+    SmallVector<Value *, 4> Index(GEPI.idx_begin(), GEPI.idx_end());
+    bool IsInBounds = GEPI.isInBounds();
+    IRBuilderTy PHIBuilder(GEPI.getParent()->getFirstNonPHI());
+    PHINode *NewPN = PHIBuilder.CreatePHI(GEPI.getType(),
+                                          PHI->getNumIncomingValues(),
+                                          PHI->getName() + ".sroa.phi");
+    for (unsigned I = 0, E = PHI->getNumIncomingValues(); I != E; ++I) {
+      Instruction *In = cast<Instruction>(PHI->getIncomingValue(I));
+
+      IRBuilderTy B(In->getParent(), std::next(In->getIterator()));
+      Value *NewVal = IsInBounds
+          ? B.CreateInBoundsGEP(In, Index, In->getName() + ".sroa.gep")
+          : B.CreateGEP(In, Index, In->getName() + ".sroa.gep");
+      NewPN->addIncoming(NewVal, PHI->getIncomingBlock(I));
+      if (auto *I = dyn_cast<Instruction>(NewVal)) {
+        visit(I);
+      }
+    }
+
+    GEPI.replaceAllUsesWith(NewPN);
+    GEPI.eraseFromParent();
+
+    LLVM_DEBUG(for (Value *In : NewPN->incoming_values())
+                 dbgs() << "\n              " << *In;
+               dbgs() << "\n              " << *NewPN << '\n');
+
+    return true;
+  }
+
   bool visitGetElementPtrInst(GetElementPtrInst &GEPI) {
     if (isa<SelectInst>(GEPI.getPointerOperand()) &&
         foldGEPSelect(GEPI))
       return true;
 
+    if (isa<PHINode>(GEPI.getPointerOperand()) &&
+        foldGEPPhi(GEPI))
+      return true;
+
     enqueueUsers(GEPI);
     return false;
   }
diff --git a/llvm/test/Transforms/SROA/phi-gep.ll b/llvm/test/Transforms/SROA/phi-gep.ll
new file mode 100644
index 0000000000000..72d07ed84a656
--- /dev/null
+++ b/llvm/test/Transforms/SROA/phi-gep.ll
@@ -0,0 +1,364 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt -S -sroa < %s | FileCheck %s
+
+%pair = type { i32, i32 }
+
+define i32 @test_sroa_phi_gep(i1 %cond) {
+; CHECK-LABEL: @test_sroa_phi_gep(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br i1 [[COND:%.*]], label [[IF_THEN:%.*]], label [[END:%.*]]
+; CHECK:       if.then:
+; CHECK-NEXT:    br label [[END]]
+; CHECK:       end:
+; CHECK-NEXT:    [[PHI_SROA_PHI_SROA_SPECULATED:%.*]] = phi i32 [ 1, [[ENTRY:%.*]] ], [ 2, [[IF_THEN]] ]
+; CHECK-NEXT:    ret i32 [[PHI_SROA_PHI_SROA_SPECULATED]]
+;
+entry:
+  %a = alloca %pair, align 4
+  %b = alloca %pair, align 4
+  %gep_a = getelementptr inbounds %pair, %pair* %a, i32 0, i32 1
+  %gep_b = getelementptr inbounds %pair, %pair* %b, i32 0, i32 1
+  store i32 1, i32* %gep_a, align 4
+  store i32 2, i32* %gep_b, align 4
+  br i1 %cond, label %if.then, label %end
+
+if.then:
+  br label %end
+
+end:
+  %phi = phi %pair* [ %a, %entry], [ %b, %if.then ]
+  %gep = getelementptr inbounds %pair, %pair* %phi, i32 0, i32 1
+  %load = load i32, i32* %gep, align 4
+  ret i32 %load
+}
+
+define i32 @test_sroa_phi_gep_non_inbound(i1 %cond) {
+; CHECK-LABEL: @test_sroa_phi_gep_non_inbound(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br i1 [[COND:%.*]], label [[IF_THEN:%.*]], label [[END:%.*]]
+; CHECK:       if.then:
+; CHECK-NEXT:    br label [[END]]
+; CHECK:       end:
+; CHECK-NEXT:    [[PHI_SROA_PHI_SROA_SPECULATED:%.*]] = phi i32 [ 1, [[ENTRY:%.*]] ], [ 2, [[IF_THEN]] ]
+; CHECK-NEXT:    ret i32 [[PHI_SROA_PHI_SROA_SPECULATED]]
+;
+entry:
+  %a = alloca %pair, align 4
+  %b = alloca %pair, align 4
+  %gep_a = getelementptr %pair, %pair* %a, i32 0, i32 1
+  %gep_b = getelementptr %pair, %pair* %b, i32 0, i32 1
+  store i32 1, i32* %gep_a, align 4
+  store i32 2, i32* %gep_b, align 4
+  br i1 %cond, label %if.then, label %end
+
+if.then:
+  br label %end
+
+end:
+  %phi = phi %pair* [ %a, %entry], [ %b, %if.then ]
+  %gep = getelementptr %pair, %pair* %phi, i32 0, i32 1
+  %load = load i32, i32* %gep, align 4
+  ret i32 %load
+}
+
+define i32 @test_sroa_phi_gep_undef(i1 %cond) {
+; CHECK-LABEL: @test_sroa_phi_gep_undef(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[A:%.*]] = alloca [[PAIR:%.*]], align 4
+; CHECK-NEXT:    br i1 [[COND:%.*]], label [[IF_THEN:%.*]], label [[END:%.*]]
+; CHECK:       if.then:
+; CHECK-NEXT:    br label [[END]]
+; CHECK:       end:
+; CHECK-NEXT:    [[PHI:%.*]] = phi %pair* [ [[A]], [[ENTRY:%.*]] ], [ undef, [[IF_THEN]] ]
+; CHECK-NEXT:    [[GEP:%.*]] = getelementptr inbounds [[PAIR]], %pair* [[PHI]], i32 0, i32 1
+; CHECK-NEXT:    [[LOAD:%.*]] = load i32, i32* [[GEP]], align 4
+; CHECK-NEXT:    ret i32 [[LOAD]]
+;
+entry:
+  %a = alloca %pair, align 4
+  br i1 %cond, label %if.then, label %end
+
+if.then:
+  br label %end
+
+end:
+  %phi = phi %pair* [ %a, %entry], [ undef, %if.then ]
+  %gep = getelementptr inbounds %pair, %pair* %phi, i32 0, i32 1
+  %load = load i32, i32* %gep, align 4
+  ret i32 %load
+}
+
+@g = global %pair zeroinitializer, align 4
+
+define i32 @test_sroa_phi_gep_global(i1 %cond) {
+; CHECK-LABEL: @test_sroa_phi_gep_global(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[A:%.*]] = alloca [[PAIR:%.*]], align 4
+; CHECK-NEXT:    [[GEP_A:%.*]] = getelementptr inbounds [[PAIR]], %pair* [[A]], i32 0, i32 1
+; CHECK-NEXT:    store i32 1, i32* [[GEP_A]], align 4
+; CHECK-NEXT:    br i1 [[COND:%.*]], label [[IF_THEN:%.*]], label [[END:%.*]]
+; CHECK:       if.then:
+; CHECK-NEXT:    br label [[END]]
+; CHECK:       end:
+; CHECK-NEXT:    [[PHI:%.*]] = phi %pair* [ [[A]], [[ENTRY:%.*]] ], [ @g, [[IF_THEN]] ]
+; CHECK-NEXT:    [[GEP:%.*]] = getelementptr inbounds [[PAIR]], %pair* [[PHI]], i32 0, i32 1
+; CHECK-NEXT:    [[LOAD:%.*]] = load i32, i32* [[GEP]], align 4
+; CHECK-NEXT:    ret i32 [[LOAD]]
+;
+entry:
+  %a = alloca %pair, align 4
+  %gep_a = getelementptr inbounds %pair, %pair* %a, i32 0, i32 1
+  store i32 1, i32* %gep_a, align 4
+  br i1 %cond, label %if.then, label %end
+
+if.then:
+  br label %end
+
+end:
+  %phi = phi %pair* [ %a, %entry], [ @g, %if.then ]
+  %gep = getelementptr inbounds %pair, %pair* %phi, i32 0, i32 1
+  %load = load i32, i32* %gep, align 4
+  ret i32 %load
+}
+
+define i32 @test_sroa_phi_gep_arg_phi_inspt(i1 %cond) {
+; CHECK-LABEL: @test_sroa_phi_gep_arg_phi_inspt(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br i1 [[COND:%.*]], label [[FOR:%.*]], label [[END:%.*]]
+; CHECK:       for:
+; CHECK-NEXT:    [[PHI_INSPT:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[I:%.*]], [[FOR]] ]
+; CHECK-NEXT:    [[I]] = add i32 [[PHI_INSPT]], 1
+; CHECK-NEXT:    [[LOOP_COND:%.*]] = icmp ult i32 [[I]], 10
+; CHECK-NEXT:    br i1 [[LOOP_COND]], label [[FOR]], label [[END]]
+; CHECK:       end:
+; CHECK-NEXT:    [[PHI_SROA_PHI_SROA_SPECULATED:%.*]] = phi i32 [ 1, [[ENTRY]] ], [ 2, [[FOR]] ]
+; CHECK-NEXT:    ret i32 [[PHI_SROA_PHI_SROA_SPECULATED]]
+;
+entry:
+  %a = alloca %pair, align 4
+  %b = alloca %pair, align 4
+  %gep_a = getelementptr inbounds %pair, %pair* %a, i32 0, i32 1
+  %gep_b = getelementptr inbounds %pair, %pair* %b, i32 0, i32 1
+  store i32 1, i32* %gep_a, align 4
+  store i32 2, i32* %gep_b, align 4
+  br i1 %cond, label %for, label %end
+
+for:
+  %phi_inspt = phi i32 [ 0, %entry ], [ %i, %for ]
+  %i = add i32 %phi_inspt, 1
+  %loop.cond = icmp ult i32 %i, 10
+  br i1 %loop.cond, label %for, label %end
+
+end:
+  %phi = phi %pair* [ %a, %entry], [ %b, %for ]
+  %gep = getelementptr inbounds %pair, %pair* %phi, i32 0, i32 1
+  %load = load i32, i32* %gep, align 4
+  ret i32 %load
+}
+
+define i32 @test_sroa_phi_gep_phi_inspt(i1 %cond) {
+; CHECK-LABEL: @test_sroa_phi_gep_phi_inspt(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[A:%.*]] = alloca [[PAIR:%.*]], align 4
+; CHECK-NEXT:    [[B:%.*]] = alloca [[PAIR]], align 4
+; CHECK-NEXT:    [[GEP_A:%.*]] = getelementptr inbounds [[PAIR]], %pair* [[A]], i32 0, i32 1
+; CHECK-NEXT:    [[GEP_B:%.*]] = getelementptr inbounds [[PAIR]], %pair* [[B]], i32 0, i32 1
+; CHECK-NEXT:    store i32 1, i32* [[GEP_A]], align 4
+; CHECK-NEXT:    store i32 2, i32* [[GEP_B]], align 4
+; CHECK-NEXT:    br i1 [[COND:%.*]], label [[FOR:%.*]], label [[END:%.*]]
+; CHECK:       for:
+; CHECK-NEXT:    [[PHI_IN:%.*]] = phi %pair* [ null, [[ENTRY:%.*]] ], [ [[B]], [[FOR]] ]
+; CHECK-NEXT:    [[PHI_INSPT:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[I:%.*]], [[FOR]] ]
+; CHECK-NEXT:    [[I]] = add i32 [[PHI_INSPT]], 1
+; CHECK-NEXT:    [[LOOP_COND:%.*]] = icmp ult i32 [[I]], 10
+; CHECK-NEXT:    br i1 [[LOOP_COND]], label [[FOR]], label [[END]]
+; CHECK:       end:
+; CHECK-NEXT:    [[PHI:%.*]] = phi %pair* [ [[A]], [[ENTRY]] ], [ [[PHI_IN]], [[FOR]] ]
+; CHECK-NEXT:    [[GEP:%.*]] = getelementptr inbounds [[PAIR]], %pair* [[PHI]], i32 0, i32 1
+; CHECK-NEXT:    [[LOAD:%.*]] = load i32, i32* [[GEP]], align 4
+; CHECK-NEXT:    ret i32 [[LOAD]]
+;
+entry:
+  %a = alloca %pair, align 4
+  %b = alloca %pair, align 4
+  %gep_a = getelementptr inbounds %pair, %pair* %a, i32 0, i32 1
+  %gep_b = getelementptr inbounds %pair, %pair* %b, i32 0, i32 1
+  store i32 1, i32* %gep_a, align 4
+  store i32 2, i32* %gep_b, align 4
+  br i1 %cond, label %for, label %end
+
+for:
+  %phi_in = phi %pair * [ null, %entry ], [ %b, %for ]
+  %phi_inspt = phi i32 [ 0, %entry ], [ %i, %for ]
+  %i = add i32 %phi_inspt, 1
+  %loop.cond = icmp ult i32 %i, 10
+  br i1 %loop.cond, label %for, label %end
+
+end:
+  %phi = phi %pair* [ %a, %entry], [ %phi_in, %for ]
+  %gep = getelementptr inbounds %pair, %pair* %phi, i32 0, i32 1
+  %load = load i32, i32* %gep, align 4
+  ret i32 %load
+}
+
+define i32 @test_sroa_gep_phi_gep(i1 %cond) {
+; CHECK-LABEL: @test_sroa_gep_phi_gep(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[A_SROA_0:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    br i1 [[COND:%.*]], label [[FOR:%.*]], label [[END:%.*]]
+; CHECK:       for:
+; CHECK-NEXT:    [[PHI_I:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[I:%.*]], [[FOR]] ]
+; CHECK-NEXT:    [[PHI:%.*]] = phi i32* [ [[A_SROA_0]], [[ENTRY]] ], [ [[GEP_FOR:%.*]], [[FOR]] ]
+; CHECK-NEXT:    [[I]] = add i32 [[PHI_I]], 1
+; CHECK-NEXT:    [[GEP_FOR]] = getelementptr inbounds i32, i32* [[PHI]], i32 0
+; CHECK-NEXT:    [[LOOP_COND:%.*]] = icmp ult i32 [[I]], 10
+; CHECK-NEXT:    br i1 [[LOOP_COND]], label [[FOR]], label [[END]]
+; CHECK:       end:
+; CHECK-NEXT:    [[PHI_END:%.*]] = phi i32* [ [[A_SROA_0]], [[ENTRY]] ], [ [[PHI]], [[FOR]] ]
+; CHECK-NEXT:    [[LOAD:%.*]] = load i32, i32* [[PHI_END]], align 4
+; CHECK-NEXT:    ret i32 [[LOAD]]
+;
+entry:
+  %a = alloca %pair, align 4
+  %gep_a = getelementptr inbounds %pair, %pair* %a, i32 0, i32 1
+  br i1 %cond, label %for, label %end
+
+for:
+  %phi_i = phi i32 [ 0, %entry ], [ %i, %for ]
+  %phi = phi i32* [ %gep_a, %entry], [ %gep_for, %for ]
+  %i = add i32 %phi_i, 1
+  %gep_for = getelementptr inbounds i32, i32* %phi, i32 0
+  %loop.cond = icmp ult i32 %i, 10
+  br i1 %loop.cond, label %for, label %end
+
+end:
+  %phi_end = phi i32* [ %gep_a, %entry], [ %phi, %for ]
+  %load = load i32, i32* %phi_end, align 4
+  ret i32 %load
+}
+
+define i32 @test_sroa_gep_cast_phi_gep(i1 %cond) {
+; CHECK-LABEL: @test_sroa_gep_cast_phi_gep(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[A_SROA_0:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    [[A_SROA_0_0_GEP_A_1_SROA_CAST:%.*]] = bitcast i32* [[A_SROA_0]] to float*
+; CHECK-NEXT:    [[A_SROA_0_0_GEP_A_1_SROA_CAST2:%.*]] = bitcast i32* [[A_SROA_0]] to float*
+; CHECK-NEXT:    [[A_SROA_0_0_GEP_SROA_CAST:%.*]] = bitcast i32* [[A_SROA_0]] to float*
+; CHECK-NEXT:    br i1 [[COND:%.*]], label [[FOR:%.*]], label [[END:%.*]]
+; CHECK:       for:
+; CHECK-NEXT:    [[PHI_I:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[I:%.*]], [[FOR]] ]
+; CHECK-NEXT:    [[PHI:%.*]] = phi float* [ [[A_SROA_0_0_GEP_A_1_SROA_CAST]], [[ENTRY]] ], [ [[GEP_FOR_2:%.*]], [[FOR]] ]
+; CHECK-NEXT:    [[PHI_SROA_PHI:%.*]] = phi float* [ [[A_SROA_0_0_GEP_SROA_CAST]], [[ENTRY]] ], [ [[GEP_FOR_2_SROA_GEP:%.*]], [[FOR]] ]
+; CHECK-NEXT:    [[I]] = add i32 [[PHI_I]], 1
+; CHECK-NEXT:    [[GEP_FOR_1:%.*]] = bitcast float* [[PHI_SROA_PHI]] to i32*
+; CHECK-NEXT:    [[GEP_FOR_2]] = bitcast i32* [[GEP_FOR_1]] to float*
+; CHECK-NEXT:    [[GEP_FOR_2_SROA_GEP]] = getelementptr inbounds float, float* [[GEP_FOR_2]], i32 0
+; CHECK-NEXT:    [[LOOP_COND:%.*]] = icmp ult i32 [[I]], 10
+; CHECK-NEXT:    br i1 [[LOOP_COND]], label [[FOR]], label [[END]]
+; CHECK:       end:
+; CHECK-NEXT:    [[PHI_END:%.*]] = phi float* [ [[A_SROA_0_0_GEP_A_1_SROA_CAST2]], [[ENTRY]] ], [ [[PHI]], [[FOR]] ]
+; CHECK-NEXT:    [[PHI_END_1:%.*]] = bitcast float* [[PHI_END]] to i32*
+; CHECK-NEXT:    [[LOAD:%.*]] = load i32, i32* [[PHI_END_1]], align 4
+; CHECK-NEXT:    ret i32 [[LOAD]]
+;
+entry:
+  %a = alloca %pair, align 4
+  %gep_a = getelementptr inbounds %pair, %pair* %a, i32 0, i32 1
+  %gep_a.1 = bitcast i32* %gep_a to float*
+  br i1 %cond, label %for, label %end
+
+for:
+  %phi_i = phi i32 [ 0, %entry ], [ %i, %for ]
+  %phi = phi float* [ %gep_a.1, %entry], [ %gep_for.2, %for ]
+  %i = add i32 %phi_i, 1
+  %gep_for = getelementptr inbounds float, float* %phi, i32 0
+  %gep_for.1 = bitcast float* %gep_for to i32*
+  %gep_for.2 = bitcast i32* %gep_for.1 to float*
+  %loop.cond = icmp ult i32 %i, 10
+  br i1 %loop.cond, label %for, label %end
+
+end:
+  %phi_end = phi float* [ %gep_a.1, %entry], [ %phi, %for ]
+  %phi_end.1 = bitcast float* %phi_end to i32*
+  %load = load i32, i32* %phi_end.1, align 4
+  ret i32 %load
+}
+
+define i32 @test_sroa_invoke_phi_gep(i1 %cond) personality i32 (...)* @__gxx_personality_v0 {
+; CHECK-LABEL: @test_sroa_invoke_phi_gep(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[A:%.*]] = alloca [[PAIR:%.*]], align 4
+; CHECK-NEXT:    br i1 [[COND:%.*]], label [[CALL:%.*]], label [[END:%.*]]
+; CHECK:       call:
+; CHECK-NEXT:    [[B:%.*]] = invoke %pair* @foo()
+; CHECK-NEXT:    to label [[END]] unwind label [[INVOKE_CATCH:%.*]]
+; CHECK:       end:
+; CHECK-NEXT:    [[PHI:%.*]] = phi %pair* [ [[A]], [[ENTRY:%.*]] ], [ [[B]], [[CALL]] ]
+; CHECK-NEXT:    [[GEP:%.*]] = getelementptr inbounds [[PAIR]], %pair* [[PHI]], i32 0, i32 1
+; CHECK-NEXT:    [[LOAD:%.*]] = load i32, i32* [[GEP]], align 4
+; CHECK-NEXT:    ret i32 [[LOAD]]
+; CHECK:       invoke_catch:
+; CHECK-NEXT:    [[RES:%.*]] = landingpad { i8*, i32 }
+; CHECK-NEXT:    catch i8* null
+; CHECK-NEXT:    ret i32 0
+;
+entry:
+  %a = alloca %pair, align 4
+  br i1 %cond, label %call, label %end
+
+call:
+  %b = invoke %pair* @foo()
+  to label %end unwind label %invoke_catch
+
+end:
+  %phi = phi %pair* [ %a, %entry], [ %b, %call ]
+  %gep = getelementptr inbounds %pair, %pair* %phi, i32 0, i32 1
+  %load = load i32, i32* %gep, align 4
+  ret i32 %load
+
+invoke_catch:
+  %res = landingpad { i8*, i32 }
+  catch i8* null
+  ret i32 0
+}
+
+define i32 @test_sroa_phi_gep_nonconst_idx(i1 %cond, i32 %idx) {
+; CHECK-LABEL: @test_sroa_phi_gep_nonconst_idx(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[A:%.*]] = alloca [[PAIR:%.*]], align 4
+; CHECK-NEXT:    [[B:%.*]] = alloca [[PAIR]], align 4
+; CHECK-NEXT:    [[GEP_A:%.*]] = getelementptr inbounds [[PAIR]], %pair* [[A]], i32 0, i32 1
+; CHECK-NEXT:    [[GEP_B:%.*]] = getelementptr inbounds [[PAIR]], %pair* [[B]], i32 0, i32 1
+; CHECK-NEXT:    store i32 1, i32* [[GEP_A]], align 4
+; CHECK-NEXT:    store i32 2, i32* [[GEP_B]], align 4
+; CHECK-NEXT:    br i1 [[COND:%.*]], label [[IF_THEN:%.*]], label [[END:%.*]]
+; CHECK:       if.then:
+; CHECK-NEXT:    br label [[END]]
+; CHECK:       end:
+; CHECK-NEXT:    [[PHI:%.*]] = phi %pair* [ [[A]], [[ENTRY:%.*]] ], [ [[B]], [[IF_THEN]] ]
+; CHECK-NEXT:    [[GEP:%.*]] = getelementptr inbounds [[PAIR]], %pair* [[PHI]], i32 [[IDX:%.*]], i32 1
+; CHECK-NEXT:    [[LOAD:%.*]] = load i32, i32* [[GEP]], align 4
+; CHECK-NEXT:    ret i32 [[LOAD]]
+;
+entry:
+  %a = alloca %pair, align 4
+  %b = alloca %pair, align 4
+  %gep_a = getelementptr inbounds %pair, %pair* %a, i32 0, i32 1
+  %gep_b = getelementptr inbounds %pair, %pair* %b, i32 0, i32 1
+  store i32 1, i32* %gep_a, align 4
+  store i32 2, i32* %gep_b, align 4
+  br i1 %cond, label %if.then, label %end
+
+if.then:
+  br label %end
+
+end:
+  %phi = phi %pair* [ %a, %entry], [ %b, %if.then ]
+  %gep = getelementptr inbounds %pair, %pair* %phi, i32 %idx, i32 1
+  %load = load i32, i32* %gep, align 4
+  ret i32 %load
+}
+
+declare %pair* @foo()
+
+declare i32 @__gxx_personality_v0(...)