; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; REQUIRES: asserts
; RUN: opt < %s -passes=loop-vectorize -disable-output -debug-only=loop-vectorize 2>&1 | FileCheck %s --check-prefix=COST
; RUN: opt < %s -passes=loop-vectorize,instcombine,simplifycfg -force-vector-width=2 -simplifycfg-require-and-preserve-domtree=1 -S | FileCheck %s
target datalayout = "e-m:e-i64:64-i128:128-n32:64-S128"
target triple = "aarch64--linux-gnu"
; This test checks that we correctly compute the scalarized operands for a
; user-specified vectorization factor when interleaving is disabled. We use the
; "optsize" attribute to disable all interleaving calculations. A cost of 4
; for %var4 indicates that we would scalarize it's operand (%var3), giving
; %var4 a lower scalarization overhead.
;
; COST-LABEL: predicated_udiv_scalarized_operand
; COST: LV: Found an estimated cost of 5 for VF 2 For instruction: %var4 = udiv i64 %var2, %var3
;
;
define i64 @predicated_udiv_scalarized_operand(ptr %a, i64 %x) optsize {
; CHECK-LABEL: @predicated_udiv_scalarized_operand(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK: vector.body:
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[INDEX_NEXT:%.*]], [[PRED_UDIV_CONTINUE2:%.*]] ]
; CHECK-NEXT: [[VEC_PHI:%.*]] = phi <2 x i64> [ zeroinitializer, [[ENTRY]] ], [ [[TMP17:%.*]], [[PRED_UDIV_CONTINUE2]] ]
; CHECK-NEXT: [[TMP0:%.*]] = getelementptr inbounds i64, ptr [[A:%.*]], i64 [[INDEX]]
; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <2 x i64>, ptr [[TMP0]], align 4
; CHECK-NEXT: [[TMP2:%.*]] = icmp sgt <2 x i64> [[WIDE_LOAD]], zeroinitializer
; CHECK-NEXT: [[TMP3:%.*]] = extractelement <2 x i1> [[TMP2]], i64 0
; CHECK-NEXT: br i1 [[TMP3]], label [[PRED_UDIV_IF:%.*]], label [[PRED_UDIV_CONTINUE:%.*]]
; CHECK: pred.udiv.if:
; CHECK-NEXT: [[TMP4:%.*]] = extractelement <2 x i64> [[WIDE_LOAD]], i64 0
; CHECK-NEXT: [[TMP5:%.*]] = add nsw i64 [[TMP4]], [[X:%.*]]
; CHECK-NEXT: [[TMP6:%.*]] = extractelement <2 x i64> [[WIDE_LOAD]], i64 0
; CHECK-NEXT: [[TMP7:%.*]] = udiv i64 [[TMP6]], [[TMP5]]
; CHECK-NEXT: [[TMP8:%.*]] = insertelement <2 x i64> poison, i64 [[TMP7]], i64 0
; CHECK-NEXT: br label [[PRED_UDIV_CONTINUE]]
; CHECK: pred.udiv.continue:
; CHECK-NEXT: [[TMP9:%.*]] = phi <2 x i64> [ poison, [[VECTOR_BODY]] ], [ [[TMP8]], [[PRED_UDIV_IF]] ]
; CHECK-NEXT: [[TMP10:%.*]] = extractelement <2 x i1> [[TMP2]], i64 1
; CHECK-NEXT: br i1 [[TMP10]], label [[PRED_UDIV_IF1:%.*]], label [[PRED_UDIV_CONTINUE2]]
; CHECK: pred.udiv.if1:
; CHECK-NEXT: [[TMP11:%.*]] = extractelement <2 x i64> [[WIDE_LOAD]], i64 1
; CHECK-NEXT: [[TMP12:%.*]] = add nsw i64 [[TMP11]], [[X]]
; CHECK-NEXT: [[TMP13:%.*]] = extractelement <2 x i64> [[WIDE_LOAD]], i64 1
; CHECK-NEXT: [[TMP14:%.*]] = udiv i64 [[TMP13]], [[TMP12]]
; CHECK-NEXT: [[TMP15:%.*]] = insertelement <2 x i64> [[TMP9]], i64 [[TMP14]], i64 1
; CHECK-NEXT: br label [[PRED_UDIV_CONTINUE2]]
; CHECK: pred.udiv.continue2:
; CHECK-NEXT: [[TMP16:%.*]] = phi <2 x i64> [ [[TMP9]], [[PRED_UDIV_CONTINUE]] ], [ [[TMP15]], [[PRED_UDIV_IF1]] ]
; CHECK-NEXT: [[PREDPHI:%.*]] = select <2 x i1> [[TMP2]], <2 x i64> [[TMP16]], <2 x i64> [[WIDE_LOAD]]
; CHECK-NEXT: [[TMP17]] = add <2 x i64> [[VEC_PHI]], [[PREDPHI]]
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 2
; CHECK-NEXT: [[TMP18:%.*]] = icmp eq i64 [[INDEX_NEXT]], 100
; CHECK-NEXT: br i1 [[TMP18]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; CHECK: middle.block:
; CHECK-NEXT: [[TMP19:%.*]] = call i64 @llvm.vector.reduce.add.v2i64(<2 x i64> [[TMP17]])
; CHECK-NEXT: ret i64 [[TMP19]]
;
entry:
br label %for.body
for.body:
%i = phi i64 [ 0, %entry ], [ %i.next, %for.inc ]
%r = phi i64 [ 0, %entry ], [ %var6, %for.inc ]
%var0 = getelementptr inbounds i64, ptr %a, i64 %i
%var2 = load i64, ptr %var0, align 4
%cond0 = icmp sgt i64 %var2, 0
br i1 %cond0, label %if.then, label %for.inc
if.then:
%var3 = add nsw i64 %var2, %x
%var4 = udiv i64 %var2, %var3
br label %for.inc
for.inc:
%var5 = phi i64 [ %var2, %for.body ], [ %var4, %if.then]
%var6 = add i64 %r, %var5
%i.next = add nuw nsw i64 %i, 1
%cond1 = icmp slt i64 %i.next, 100
br i1 %cond1, label %for.body, label %for.end
for.end:
%var7 = phi i64 [ %var6, %for.inc ]
ret i64 %var7
}
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