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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
; RUN: opt -passes=loop-vectorize -force-vector-interleave=1 -force-vector-width=4 -S < %s | FileCheck %s --check-prefix=CHECK
define i32 @select_icmp_switch(i32 %n, i32 %case, ptr %a, ptr %b) {
; CHECK-LABEL: define i32 @select_icmp_switch(
; CHECK-SAME: i32 [[N:%.*]], i32 [[CASE:%.*]], ptr [[A:%.*]], ptr [[B:%.*]]) {
; CHECK-NEXT: [[ENTRY:.*]]:
; CHECK-NEXT: [[CMP_SGT:%.*]] = icmp sgt i32 [[N]], 0
; CHECK-NEXT: br i1 [[CMP_SGT]], label %[[FOR_BODY_PREHEADER:.*]], label %[[FOR_END:.*]]
; CHECK: [[FOR_BODY_PREHEADER]]:
; CHECK-NEXT: [[WIDE_TRIP_COUNT:%.*]] = zext i32 [[N]] to i64
; CHECK-NEXT: br label %[[FOR_BODY:.*]]
; CHECK: [[FOR_BODY]]:
; CHECK-NEXT: [[INDVARS:%.*]] = phi i64 [ 0, %[[FOR_BODY_PREHEADER]] ], [ [[INDVARS_NEXT:%.*]], %[[FOR_INC:.*]] ]
; CHECK-NEXT: [[RDX_PHI:%.*]] = phi i32 [ 0, %[[FOR_BODY_PREHEADER]] ], [ [[RDX_PHI_NEXT:%.*]], %[[FOR_INC]] ]
; CHECK-NEXT: switch i32 [[CASE]], label %[[SW_BB0:.*]] [
; CHECK-NEXT: i32 0, label %[[SW_BB0]]
; CHECK-NEXT: i32 1, label %[[SW_BB1:.*]]
; CHECK-NEXT: ]
; CHECK: [[SW_BB0]]:
; CHECK-NEXT: [[A_ARRAYIDX:%.*]] = getelementptr inbounds i8, ptr [[A]], i64 [[INDVARS]]
; CHECK-NEXT: [[A_VALUE:%.*]] = load i8, ptr [[A_ARRAYIDX]], align 1
; CHECK-NEXT: [[CMP_A:%.*]] = icmp eq i8 [[A_VALUE]], -1
; CHECK-NEXT: [[TRUNC_BB0:%.*]] = trunc i64 [[INDVARS]] to i32
; CHECK-NEXT: [[SELECT_BB0:%.*]] = select i1 [[CMP_A]], i32 [[RDX_PHI]], i32 [[TRUNC_BB0]]
; CHECK-NEXT: br label %[[FOR_INC]]
; CHECK: [[SW_BB1]]:
; CHECK-NEXT: [[B_ARRAYIDX:%.*]] = getelementptr inbounds i8, ptr [[B]], i64 [[INDVARS]]
; CHECK-NEXT: [[B_VALUE:%.*]] = load i8, ptr [[B_ARRAYIDX]], align 1
; CHECK-NEXT: [[CMP_B:%.*]] = icmp eq i8 [[B_VALUE]], -1
; CHECK-NEXT: [[TRUNC_BB1:%.*]] = trunc i64 [[INDVARS]] to i32
; CHECK-NEXT: [[SELECT_BB1:%.*]] = select i1 [[CMP_B]], i32 [[RDX_PHI]], i32 [[TRUNC_BB1]]
; CHECK-NEXT: br label %[[FOR_INC]]
; CHECK: [[FOR_INC]]:
; CHECK-NEXT: [[RDX_PHI_NEXT]] = phi i32 [ [[SELECT_BB0]], %[[SW_BB0]] ], [ [[SELECT_BB1]], %[[SW_BB1]] ]
; CHECK-NEXT: [[INDVARS_NEXT]] = add nuw nsw i64 [[INDVARS]], 1
; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i64 [[INDVARS_NEXT]], [[WIDE_TRIP_COUNT]]
; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label %[[FOR_END_LOOPEXIT:.*]], label %[[FOR_BODY]]
; CHECK: [[FOR_END_LOOPEXIT]]:
; CHECK-NEXT: [[RDX_PHI_NEXT_LCSSA:%.*]] = phi i32 [ [[RDX_PHI_NEXT]], %[[FOR_INC]] ]
; CHECK-NEXT: br label %[[FOR_END]]
; CHECK: [[FOR_END]]:
; CHECK-NEXT: [[SELECT_LCSSA:%.*]] = phi i32 [ 0, %[[ENTRY]] ], [ [[RDX_PHI_NEXT_LCSSA]], %[[FOR_END_LOOPEXIT]] ]
; CHECK-NEXT: ret i32 [[SELECT_LCSSA]]
;
entry:
%cmp.sgt = icmp sgt i32 %n, 0
br i1 %cmp.sgt, label %for.body.preheader, label %for.end
for.body.preheader:
%wide.trip.count = zext i32 %n to i64
br label %for.body
for.body:
%indvars = phi i64 [ 0, %for.body.preheader ], [ %indvars.next, %for.inc ]
%rdx.phi = phi i32 [ 0, %for.body.preheader ], [ %rdx.phi.next, %for.inc ]
switch i32 %case, label %sw.bb0 [
i32 0, label %sw.bb0
i32 1, label %sw.bb1
]
sw.bb0:
%a.arrayidx = getelementptr inbounds i8, ptr %a, i64 %indvars
%a.value = load i8, ptr %a.arrayidx, align 1
%cmp.a = icmp eq i8 %a.value, -1
%trunc.bb0 = trunc i64 %indvars to i32
%select.bb0 = select i1 %cmp.a, i32 %rdx.phi, i32 %trunc.bb0
br label %for.inc
sw.bb1:
%b.arrayidx = getelementptr inbounds i8, ptr %b, i64 %indvars
%b.value = load i8, ptr %b.arrayidx, align 1
%cmp.b = icmp eq i8 %b.value, -1
%trunc.bb1 = trunc i64 %indvars to i32
%select.bb1 = select i1 %cmp.b, i32 %rdx.phi, i32 %trunc.bb1
br label %for.inc
for.inc:
%rdx.phi.next = phi i32 [ %select.bb0, %sw.bb0 ], [ %select.bb1, %sw.bb1 ]
%indvars.next = add nuw nsw i64 %indvars, 1
%exitcond.not = icmp eq i64 %indvars.next, %wide.trip.count
br i1 %exitcond.not, label %for.end, label %for.body
for.end:
%select.lcssa = phi i32 [ %rdx.phi.next, %for.inc ], [ 0, %entry ]
ret i32 %select.lcssa
}
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