1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5 2; RUN: opt -passes=loop-vectorize -force-vector-interleave=1 -force-vector-width=4 -S < %s | FileCheck %s --check-prefix=CHECK 3 4define i32 @select_icmp_switch(i32 %n, i32 %case, ptr %a, ptr %b) { 5; CHECK-LABEL: define i32 @select_icmp_switch( 6; CHECK-SAME: i32 [[N:%.*]], i32 [[CASE:%.*]], ptr [[A:%.*]], ptr [[B:%.*]]) { 7; CHECK-NEXT: [[ENTRY:.*]]: 8; CHECK-NEXT: [[CMP_SGT:%.*]] = icmp sgt i32 [[N]], 0 9; CHECK-NEXT: br i1 [[CMP_SGT]], label %[[FOR_BODY_PREHEADER:.*]], label %[[FOR_END:.*]] 10; CHECK: [[FOR_BODY_PREHEADER]]: 11; CHECK-NEXT: [[WIDE_TRIP_COUNT:%.*]] = zext i32 [[N]] to i64 12; CHECK-NEXT: br label %[[FOR_BODY:.*]] 13; CHECK: [[FOR_BODY]]: 14; CHECK-NEXT: [[INDVARS:%.*]] = phi i64 [ 0, %[[FOR_BODY_PREHEADER]] ], [ [[INDVARS_NEXT:%.*]], %[[FOR_INC:.*]] ] 15; CHECK-NEXT: [[RDX_PHI:%.*]] = phi i32 [ 0, %[[FOR_BODY_PREHEADER]] ], [ [[RDX_PHI_NEXT:%.*]], %[[FOR_INC]] ] 16; CHECK-NEXT: switch i32 [[CASE]], label %[[SW_BB0:.*]] [ 17; CHECK-NEXT: i32 0, label %[[SW_BB0]] 18; CHECK-NEXT: i32 1, label %[[SW_BB1:.*]] 19; CHECK-NEXT: ] 20; CHECK: [[SW_BB0]]: 21; CHECK-NEXT: [[A_ARRAYIDX:%.*]] = getelementptr inbounds i8, ptr [[A]], i64 [[INDVARS]] 22; CHECK-NEXT: [[A_VALUE:%.*]] = load i8, ptr [[A_ARRAYIDX]], align 1 23; CHECK-NEXT: [[CMP_A:%.*]] = icmp eq i8 [[A_VALUE]], -1 24; CHECK-NEXT: [[TRUNC_BB0:%.*]] = trunc i64 [[INDVARS]] to i32 25; CHECK-NEXT: [[SELECT_BB0:%.*]] = select i1 [[CMP_A]], i32 [[RDX_PHI]], i32 [[TRUNC_BB0]] 26; CHECK-NEXT: br label %[[FOR_INC]] 27; CHECK: [[SW_BB1]]: 28; CHECK-NEXT: [[B_ARRAYIDX:%.*]] = getelementptr inbounds i8, ptr [[B]], i64 [[INDVARS]] 29; CHECK-NEXT: [[B_VALUE:%.*]] = load i8, ptr [[B_ARRAYIDX]], align 1 30; CHECK-NEXT: [[CMP_B:%.*]] = icmp eq i8 [[B_VALUE]], -1 31; CHECK-NEXT: [[TRUNC_BB1:%.*]] = trunc i64 [[INDVARS]] to i32 32; CHECK-NEXT: [[SELECT_BB1:%.*]] = select i1 [[CMP_B]], i32 [[RDX_PHI]], i32 [[TRUNC_BB1]] 33; CHECK-NEXT: br label %[[FOR_INC]] 34; CHECK: [[FOR_INC]]: 35; CHECK-NEXT: [[RDX_PHI_NEXT]] = phi i32 [ [[SELECT_BB0]], %[[SW_BB0]] ], [ [[SELECT_BB1]], %[[SW_BB1]] ] 36; CHECK-NEXT: [[INDVARS_NEXT]] = add nuw nsw i64 [[INDVARS]], 1 37; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i64 [[INDVARS_NEXT]], [[WIDE_TRIP_COUNT]] 38; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label %[[FOR_END_LOOPEXIT:.*]], label %[[FOR_BODY]] 39; CHECK: [[FOR_END_LOOPEXIT]]: 40; CHECK-NEXT: [[RDX_PHI_NEXT_LCSSA:%.*]] = phi i32 [ [[RDX_PHI_NEXT]], %[[FOR_INC]] ] 41; CHECK-NEXT: br label %[[FOR_END]] 42; CHECK: [[FOR_END]]: 43; CHECK-NEXT: [[SELECT_LCSSA:%.*]] = phi i32 [ 0, %[[ENTRY]] ], [ [[RDX_PHI_NEXT_LCSSA]], %[[FOR_END_LOOPEXIT]] ] 44; CHECK-NEXT: ret i32 [[SELECT_LCSSA]] 45; 46entry: 47 %cmp.sgt = icmp sgt i32 %n, 0 48 br i1 %cmp.sgt, label %for.body.preheader, label %for.end 49 50for.body.preheader: 51 %wide.trip.count = zext i32 %n to i64 52 br label %for.body 53 54for.body: 55 %indvars = phi i64 [ 0, %for.body.preheader ], [ %indvars.next, %for.inc ] 56 %rdx.phi = phi i32 [ 0, %for.body.preheader ], [ %rdx.phi.next, %for.inc ] 57 switch i32 %case, label %sw.bb0 [ 58 i32 0, label %sw.bb0 59 i32 1, label %sw.bb1 60 ] 61 62sw.bb0: 63 %a.arrayidx = getelementptr inbounds i8, ptr %a, i64 %indvars 64 %a.value = load i8, ptr %a.arrayidx, align 1 65 %cmp.a = icmp eq i8 %a.value, -1 66 %trunc.bb0 = trunc i64 %indvars to i32 67 %select.bb0 = select i1 %cmp.a, i32 %rdx.phi, i32 %trunc.bb0 68 br label %for.inc 69 70sw.bb1: 71 %b.arrayidx = getelementptr inbounds i8, ptr %b, i64 %indvars 72 %b.value = load i8, ptr %b.arrayidx, align 1 73 %cmp.b = icmp eq i8 %b.value, -1 74 %trunc.bb1 = trunc i64 %indvars to i32 75 %select.bb1 = select i1 %cmp.b, i32 %rdx.phi, i32 %trunc.bb1 76 br label %for.inc 77 78for.inc: 79 %rdx.phi.next = phi i32 [ %select.bb0, %sw.bb0 ], [ %select.bb1, %sw.bb1 ] 80 %indvars.next = add nuw nsw i64 %indvars, 1 81 %exitcond.not = icmp eq i64 %indvars.next, %wide.trip.count 82 br i1 %exitcond.not, label %for.end, label %for.body 83 84for.end: 85 %select.lcssa = phi i32 [ %rdx.phi.next, %for.inc ], [ 0, %entry ] 86 ret i32 %select.lcssa 87} 88