; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals none --version 5 ; RUN: opt < %s -passes=loop-vectorize -force-vector-width=4 -S | FileCheck %s ; Check that we don't unnecessarily broadcast %pow define void @powi_only_first_lane_used_of_second_arg(ptr %p, i32 %pow) { ; CHECK-LABEL: define void @powi_only_first_lane_used_of_second_arg( ; CHECK-SAME: ptr [[P:%.*]], i32 [[POW:%.*]]) { ; CHECK-NEXT: [[ENTRY:.*]]: ; CHECK-NEXT: br i1 false, label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]] ; CHECK: [[VECTOR_PH]]: ; CHECK-NEXT: br label %[[VECTOR_BODY:.*]] ; CHECK: [[VECTOR_BODY]]: ; CHECK-NEXT: [[INDEX:%.*]] = phi i32 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ] ; CHECK-NEXT: [[TMP0:%.*]] = getelementptr float, ptr [[P]], i32 [[INDEX]] ; CHECK-NEXT: [[TMP1:%.*]] = getelementptr float, ptr [[TMP0]], i32 0 ; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <4 x float>, ptr [[TMP1]], align 4 ; CHECK-NEXT: [[TMP2:%.*]] = call <4 x float> @llvm.powi.v4f32.i32(<4 x float> [[WIDE_LOAD]], i32 [[POW]]) ; CHECK-NEXT: store <4 x float> [[TMP2]], ptr [[TMP1]], align 4 ; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 4 ; CHECK-NEXT: [[TMP3:%.*]] = icmp eq i32 [[INDEX_NEXT]], 1024 ; CHECK-NEXT: br i1 [[TMP3]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]] ; CHECK: [[MIDDLE_BLOCK]]: ; CHECK-NEXT: br i1 true, label %[[EXIT:.*]], label %[[SCALAR_PH]] ; CHECK: [[SCALAR_PH]]: ; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i32 [ 1024, %[[MIDDLE_BLOCK]] ], [ 0, %[[ENTRY]] ] ; CHECK-NEXT: br label %[[LOOP:.*]] ; CHECK: [[LOOP]]: ; CHECK-NEXT: [[IV:%.*]] = phi i32 [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ] ; CHECK-NEXT: [[P_GEP:%.*]] = getelementptr float, ptr [[P]], i32 [[IV]] ; CHECK-NEXT: [[X:%.*]] = load float, ptr [[P_GEP]], align 4 ; CHECK-NEXT: [[Y:%.*]] = call float @llvm.powi.f32.i32(float [[X]], i32 [[POW]]) ; CHECK-NEXT: store float [[Y]], ptr [[P_GEP]], align 4 ; CHECK-NEXT: [[IV_NEXT]] = add i32 [[IV]], 1 ; CHECK-NEXT: [[DONE:%.*]] = icmp eq i32 [[IV_NEXT]], 1024 ; CHECK-NEXT: br i1 [[DONE]], label %[[EXIT]], label %[[LOOP]], !llvm.loop [[LOOP3:![0-9]+]] ; CHECK: [[EXIT]]: ; CHECK-NEXT: ret void ; entry: br label %loop loop: %iv = phi i32 [0, %entry], [%iv.next, %loop] %p.gep = getelementptr float, ptr %p, i32 %iv %x = load float, ptr %p.gep %y = call float @llvm.powi(float %x, i32 %pow) store float %y, ptr %p.gep %iv.next = add i32 %iv, 1 %done = icmp eq i32 %iv.next, 1024 br i1 %done, label %exit, label %loop exit: ret void }