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llvm-project/llvm/test/Transforms/LoopVectorize/X86/x86-predication.ll
Florian Hahn 99d6c6d936
[VPlan] Model branch cond to enter scalar epilogue in VPlan. (#92651) 
This patch moves branch condition creation to enter the scalar epilogue
loop to VPlan. Modeling the branch in the middle block also requires
modeling the successor blocks. This is done using the recently
introduced VPIRBasicBlock.

Note that the middle.block is still created as part of the skeleton and
then patched in during VPlan execution. Unfortunately the skeleton needs
to create the middle.block early on, as it is also used for induction
resume value creation and is also needed to properly update the
dominator tree during skeleton creation.

After this patch lands, I plan to move induction resume value and phi
node creation in the scalar preheader to VPlan. Once that is done, we
should be able to create the middle.block in VPlan directly.

This is a re-worked version based on the earlier
https://reviews.llvm.org/D150398 and the main change is the use of
VPIRBasicBlock.

Depends on https://github.com/llvm/llvm-project/pull/92525

PR: https://github.com/llvm/llvm-project/pull/92651
2024-07-05 10:08:42 +01:00

463 lines
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -mattr=avx -force-vector-width=2 -force-vector-interleave=1 -passes=loop-vectorize,simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S | FileCheck %s
; RUN: opt -mcpu=skylake-avx512 -S -force-vector-width=8 -force-vector-interleave=1 -passes=loop-vectorize < %s | FileCheck %s --check-prefix=SINK-GATHER
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
target triple = "x86_64-apple-macosx10.8.0"
; This test ensures that we don't scalarize the predicated load. Since the load
; can be vectorized with predication, scalarizing it would cause its pointer
; operand to become non-uniform.
;
define i32 @predicated_sdiv_masked_load(ptr %a, ptr %b, i32 %x, i1 %c) {
; CHECK-LABEL: @predicated_sdiv_masked_load(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <2 x i1> poison, i1 [[C:%.*]], i64 0
; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <2 x i1> [[BROADCAST_SPLATINSERT]], <2 x i1> poison, <2 x i32> zeroinitializer
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK: vector.body:
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[INDEX_NEXT:%.*]], [[PRED_SDIV_CONTINUE2:%.*]] ]
; CHECK-NEXT: [[VEC_PHI:%.*]] = phi <2 x i32> [ zeroinitializer, [[ENTRY]] ], [ [[TMP17:%.*]], [[PRED_SDIV_CONTINUE2]] ]
; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[INDEX]], 0
; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds i32, ptr [[A:%.*]], i64 [[TMP0]]
; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds i32, ptr [[TMP1]], i32 0
; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <2 x i32>, ptr [[TMP2]], align 4
; CHECK-NEXT: [[TMP3:%.*]] = getelementptr i32, ptr [[B:%.*]], i64 [[TMP0]]
; CHECK-NEXT: [[TMP4:%.*]] = getelementptr i32, ptr [[TMP3]], i32 0
; CHECK-NEXT: [[WIDE_MASKED_LOAD:%.*]] = call <2 x i32> @llvm.masked.load.v2i32.p0(ptr [[TMP4]], i32 4, <2 x i1> [[BROADCAST_SPLAT]], <2 x i32> poison)
; CHECK-NEXT: [[TMP5:%.*]] = extractelement <2 x i1> [[BROADCAST_SPLAT]], i32 0
; CHECK-NEXT: br i1 [[TMP5]], label [[PRED_SDIV_IF:%.*]], label [[PRED_SDIV_CONTINUE:%.*]]
; CHECK: pred.sdiv.if:
; CHECK-NEXT: [[TMP6:%.*]] = extractelement <2 x i32> [[WIDE_MASKED_LOAD]], i32 0
; CHECK-NEXT: [[TMP7:%.*]] = sdiv i32 [[TMP6]], [[X:%.*]]
; CHECK-NEXT: [[TMP8:%.*]] = insertelement <2 x i32> poison, i32 [[TMP7]], i32 0
; CHECK-NEXT: br label [[PRED_SDIV_CONTINUE]]
; CHECK: pred.sdiv.continue:
; CHECK-NEXT: [[TMP9:%.*]] = phi <2 x i32> [ poison, [[VECTOR_BODY]] ], [ [[TMP8]], [[PRED_SDIV_IF]] ]
; CHECK-NEXT: [[TMP10:%.*]] = extractelement <2 x i1> [[BROADCAST_SPLAT]], i32 1
; CHECK-NEXT: br i1 [[TMP10]], label [[PRED_SDIV_IF1:%.*]], label [[PRED_SDIV_CONTINUE2]]
; CHECK: pred.sdiv.if1:
; CHECK-NEXT: [[TMP11:%.*]] = extractelement <2 x i32> [[WIDE_MASKED_LOAD]], i32 1
; CHECK-NEXT: [[TMP12:%.*]] = sdiv i32 [[TMP11]], [[X]]
; CHECK-NEXT: [[TMP13:%.*]] = insertelement <2 x i32> [[TMP9]], i32 [[TMP12]], i32 1
; CHECK-NEXT: br label [[PRED_SDIV_CONTINUE2]]
; CHECK: pred.sdiv.continue2:
; CHECK-NEXT: [[TMP14:%.*]] = phi <2 x i32> [ [[TMP9]], [[PRED_SDIV_CONTINUE]] ], [ [[TMP13]], [[PRED_SDIV_IF1]] ]
; CHECK-NEXT: [[TMP15:%.*]] = add nsw <2 x i32> [[TMP14]], [[WIDE_LOAD]]
; CHECK-NEXT: [[PREDPHI:%.*]] = select <2 x i1> [[BROADCAST_SPLAT]], <2 x i32> [[TMP15]], <2 x i32> [[WIDE_LOAD]]
; CHECK-NEXT: [[TMP17]] = add <2 x i32> [[VEC_PHI]], [[PREDPHI]]
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 2
; CHECK-NEXT: [[TMP18:%.*]] = icmp eq i64 [[INDEX_NEXT]], 10000
; CHECK-NEXT: br i1 [[TMP18]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; CHECK: middle.block:
; CHECK-NEXT: [[TMP19:%.*]] = call i32 @llvm.vector.reduce.add.v2i32(<2 x i32> [[TMP17]])
; CHECK-NEXT: ret i32 [[TMP19]]
;
; SINK-GATHER-LABEL: @predicated_sdiv_masked_load(
; SINK-GATHER-NEXT: entry:
; SINK-GATHER-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; SINK-GATHER: vector.ph:
; SINK-GATHER-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <8 x i1> poison, i1 [[C:%.*]], i64 0
; SINK-GATHER-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <8 x i1> [[BROADCAST_SPLATINSERT]], <8 x i1> poison, <8 x i32> zeroinitializer
; SINK-GATHER-NEXT: br label [[VECTOR_BODY:%.*]]
; SINK-GATHER: vector.body:
; SINK-GATHER-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[PRED_SDIV_CONTINUE14:%.*]] ]
; SINK-GATHER-NEXT: [[VEC_PHI:%.*]] = phi <8 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[TMP47:%.*]], [[PRED_SDIV_CONTINUE14]] ]
; SINK-GATHER-NEXT: [[TMP0:%.*]] = add i64 [[INDEX]], 0
; SINK-GATHER-NEXT: [[TMP1:%.*]] = getelementptr inbounds i32, ptr [[A:%.*]], i64 [[TMP0]]
; SINK-GATHER-NEXT: [[TMP2:%.*]] = getelementptr inbounds i32, ptr [[TMP1]], i32 0
; SINK-GATHER-NEXT: [[WIDE_LOAD:%.*]] = load <8 x i32>, ptr [[TMP2]], align 4
; SINK-GATHER-NEXT: [[TMP3:%.*]] = getelementptr i32, ptr [[B:%.*]], i64 [[TMP0]]
; SINK-GATHER-NEXT: [[TMP4:%.*]] = getelementptr i32, ptr [[TMP3]], i32 0
; SINK-GATHER-NEXT: [[WIDE_MASKED_LOAD:%.*]] = call <8 x i32> @llvm.masked.load.v8i32.p0(ptr [[TMP4]], i32 4, <8 x i1> [[BROADCAST_SPLAT]], <8 x i32> poison)
; SINK-GATHER-NEXT: [[TMP5:%.*]] = extractelement <8 x i1> [[BROADCAST_SPLAT]], i32 0
; SINK-GATHER-NEXT: br i1 [[TMP5]], label [[PRED_SDIV_IF:%.*]], label [[PRED_SDIV_CONTINUE:%.*]]
; SINK-GATHER: pred.sdiv.if:
; SINK-GATHER-NEXT: [[TMP6:%.*]] = extractelement <8 x i32> [[WIDE_MASKED_LOAD]], i32 0
; SINK-GATHER-NEXT: [[TMP7:%.*]] = sdiv i32 [[TMP6]], [[X:%.*]]
; SINK-GATHER-NEXT: [[TMP8:%.*]] = insertelement <8 x i32> poison, i32 [[TMP7]], i32 0
; SINK-GATHER-NEXT: br label [[PRED_SDIV_CONTINUE]]
; SINK-GATHER: pred.sdiv.continue:
; SINK-GATHER-NEXT: [[TMP9:%.*]] = phi <8 x i32> [ poison, [[VECTOR_BODY]] ], [ [[TMP8]], [[PRED_SDIV_IF]] ]
; SINK-GATHER-NEXT: [[TMP10:%.*]] = extractelement <8 x i1> [[BROADCAST_SPLAT]], i32 1
; SINK-GATHER-NEXT: br i1 [[TMP10]], label [[PRED_SDIV_IF1:%.*]], label [[PRED_SDIV_CONTINUE2:%.*]]
; SINK-GATHER: pred.sdiv.if1:
; SINK-GATHER-NEXT: [[TMP11:%.*]] = extractelement <8 x i32> [[WIDE_MASKED_LOAD]], i32 1
; SINK-GATHER-NEXT: [[TMP12:%.*]] = sdiv i32 [[TMP11]], [[X]]
; SINK-GATHER-NEXT: [[TMP13:%.*]] = insertelement <8 x i32> [[TMP9]], i32 [[TMP12]], i32 1
; SINK-GATHER-NEXT: br label [[PRED_SDIV_CONTINUE2]]
; SINK-GATHER: pred.sdiv.continue2:
; SINK-GATHER-NEXT: [[TMP14:%.*]] = phi <8 x i32> [ [[TMP9]], [[PRED_SDIV_CONTINUE]] ], [ [[TMP13]], [[PRED_SDIV_IF1]] ]
; SINK-GATHER-NEXT: [[TMP15:%.*]] = extractelement <8 x i1> [[BROADCAST_SPLAT]], i32 2
; SINK-GATHER-NEXT: br i1 [[TMP15]], label [[PRED_SDIV_IF3:%.*]], label [[PRED_SDIV_CONTINUE4:%.*]]
; SINK-GATHER: pred.sdiv.if3:
; SINK-GATHER-NEXT: [[TMP16:%.*]] = extractelement <8 x i32> [[WIDE_MASKED_LOAD]], i32 2
; SINK-GATHER-NEXT: [[TMP17:%.*]] = sdiv i32 [[TMP16]], [[X]]
; SINK-GATHER-NEXT: [[TMP18:%.*]] = insertelement <8 x i32> [[TMP14]], i32 [[TMP17]], i32 2
; SINK-GATHER-NEXT: br label [[PRED_SDIV_CONTINUE4]]
; SINK-GATHER: pred.sdiv.continue4:
; SINK-GATHER-NEXT: [[TMP19:%.*]] = phi <8 x i32> [ [[TMP14]], [[PRED_SDIV_CONTINUE2]] ], [ [[TMP18]], [[PRED_SDIV_IF3]] ]
; SINK-GATHER-NEXT: [[TMP20:%.*]] = extractelement <8 x i1> [[BROADCAST_SPLAT]], i32 3
; SINK-GATHER-NEXT: br i1 [[TMP20]], label [[PRED_SDIV_IF5:%.*]], label [[PRED_SDIV_CONTINUE6:%.*]]
; SINK-GATHER: pred.sdiv.if5:
; SINK-GATHER-NEXT: [[TMP21:%.*]] = extractelement <8 x i32> [[WIDE_MASKED_LOAD]], i32 3
; SINK-GATHER-NEXT: [[TMP22:%.*]] = sdiv i32 [[TMP21]], [[X]]
; SINK-GATHER-NEXT: [[TMP23:%.*]] = insertelement <8 x i32> [[TMP19]], i32 [[TMP22]], i32 3
; SINK-GATHER-NEXT: br label [[PRED_SDIV_CONTINUE6]]
; SINK-GATHER: pred.sdiv.continue6:
; SINK-GATHER-NEXT: [[TMP24:%.*]] = phi <8 x i32> [ [[TMP19]], [[PRED_SDIV_CONTINUE4]] ], [ [[TMP23]], [[PRED_SDIV_IF5]] ]
; SINK-GATHER-NEXT: [[TMP25:%.*]] = extractelement <8 x i1> [[BROADCAST_SPLAT]], i32 4
; SINK-GATHER-NEXT: br i1 [[TMP25]], label [[PRED_SDIV_IF7:%.*]], label [[PRED_SDIV_CONTINUE8:%.*]]
; SINK-GATHER: pred.sdiv.if7:
; SINK-GATHER-NEXT: [[TMP26:%.*]] = extractelement <8 x i32> [[WIDE_MASKED_LOAD]], i32 4
; SINK-GATHER-NEXT: [[TMP27:%.*]] = sdiv i32 [[TMP26]], [[X]]
; SINK-GATHER-NEXT: [[TMP28:%.*]] = insertelement <8 x i32> [[TMP24]], i32 [[TMP27]], i32 4
; SINK-GATHER-NEXT: br label [[PRED_SDIV_CONTINUE8]]
; SINK-GATHER: pred.sdiv.continue8:
; SINK-GATHER-NEXT: [[TMP29:%.*]] = phi <8 x i32> [ [[TMP24]], [[PRED_SDIV_CONTINUE6]] ], [ [[TMP28]], [[PRED_SDIV_IF7]] ]
; SINK-GATHER-NEXT: [[TMP30:%.*]] = extractelement <8 x i1> [[BROADCAST_SPLAT]], i32 5
; SINK-GATHER-NEXT: br i1 [[TMP30]], label [[PRED_SDIV_IF9:%.*]], label [[PRED_SDIV_CONTINUE10:%.*]]
; SINK-GATHER: pred.sdiv.if9:
; SINK-GATHER-NEXT: [[TMP31:%.*]] = extractelement <8 x i32> [[WIDE_MASKED_LOAD]], i32 5
; SINK-GATHER-NEXT: [[TMP32:%.*]] = sdiv i32 [[TMP31]], [[X]]
; SINK-GATHER-NEXT: [[TMP33:%.*]] = insertelement <8 x i32> [[TMP29]], i32 [[TMP32]], i32 5
; SINK-GATHER-NEXT: br label [[PRED_SDIV_CONTINUE10]]
; SINK-GATHER: pred.sdiv.continue10:
; SINK-GATHER-NEXT: [[TMP34:%.*]] = phi <8 x i32> [ [[TMP29]], [[PRED_SDIV_CONTINUE8]] ], [ [[TMP33]], [[PRED_SDIV_IF9]] ]
; SINK-GATHER-NEXT: [[TMP35:%.*]] = extractelement <8 x i1> [[BROADCAST_SPLAT]], i32 6
; SINK-GATHER-NEXT: br i1 [[TMP35]], label [[PRED_SDIV_IF11:%.*]], label [[PRED_SDIV_CONTINUE12:%.*]]
; SINK-GATHER: pred.sdiv.if11:
; SINK-GATHER-NEXT: [[TMP36:%.*]] = extractelement <8 x i32> [[WIDE_MASKED_LOAD]], i32 6
; SINK-GATHER-NEXT: [[TMP37:%.*]] = sdiv i32 [[TMP36]], [[X]]
; SINK-GATHER-NEXT: [[TMP38:%.*]] = insertelement <8 x i32> [[TMP34]], i32 [[TMP37]], i32 6
; SINK-GATHER-NEXT: br label [[PRED_SDIV_CONTINUE12]]
; SINK-GATHER: pred.sdiv.continue12:
; SINK-GATHER-NEXT: [[TMP39:%.*]] = phi <8 x i32> [ [[TMP34]], [[PRED_SDIV_CONTINUE10]] ], [ [[TMP38]], [[PRED_SDIV_IF11]] ]
; SINK-GATHER-NEXT: [[TMP40:%.*]] = extractelement <8 x i1> [[BROADCAST_SPLAT]], i32 7
; SINK-GATHER-NEXT: br i1 [[TMP40]], label [[PRED_SDIV_IF13:%.*]], label [[PRED_SDIV_CONTINUE14]]
; SINK-GATHER: pred.sdiv.if13:
; SINK-GATHER-NEXT: [[TMP41:%.*]] = extractelement <8 x i32> [[WIDE_MASKED_LOAD]], i32 7
; SINK-GATHER-NEXT: [[TMP42:%.*]] = sdiv i32 [[TMP41]], [[X]]
; SINK-GATHER-NEXT: [[TMP43:%.*]] = insertelement <8 x i32> [[TMP39]], i32 [[TMP42]], i32 7
; SINK-GATHER-NEXT: br label [[PRED_SDIV_CONTINUE14]]
; SINK-GATHER: pred.sdiv.continue14:
; SINK-GATHER-NEXT: [[TMP44:%.*]] = phi <8 x i32> [ [[TMP39]], [[PRED_SDIV_CONTINUE12]] ], [ [[TMP43]], [[PRED_SDIV_IF13]] ]
; SINK-GATHER-NEXT: [[TMP45:%.*]] = add nsw <8 x i32> [[TMP44]], [[WIDE_LOAD]]
; SINK-GATHER-NEXT: [[PREDPHI:%.*]] = select <8 x i1> [[BROADCAST_SPLAT]], <8 x i32> [[TMP45]], <8 x i32> [[WIDE_LOAD]]
; SINK-GATHER-NEXT: [[TMP47]] = add <8 x i32> [[VEC_PHI]], [[PREDPHI]]
; SINK-GATHER-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 8
; SINK-GATHER-NEXT: [[TMP48:%.*]] = icmp eq i64 [[INDEX_NEXT]], 10000
; SINK-GATHER-NEXT: br i1 [[TMP48]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; SINK-GATHER: middle.block:
; SINK-GATHER-NEXT: [[TMP49:%.*]] = call i32 @llvm.vector.reduce.add.v8i32(<8 x i32> [[TMP47]])
; SINK-GATHER-NEXT: br i1 true, label [[FOR_END:%.*]], label [[SCALAR_PH]]
; SINK-GATHER: scalar.ph:
; SINK-GATHER-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 10000, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
; SINK-GATHER-NEXT: [[BC_MERGE_RDX:%.*]] = phi i32 [ [[TMP49]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY]] ]
; SINK-GATHER-NEXT: br label [[FOR_BODY:%.*]]
; SINK-GATHER: for.body:
; SINK-GATHER-NEXT: [[I:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[I_NEXT:%.*]], [[FOR_INC:%.*]] ]
; SINK-GATHER-NEXT: [[R:%.*]] = phi i32 [ [[BC_MERGE_RDX]], [[SCALAR_PH]] ], [ [[T7:%.*]], [[FOR_INC]] ]
; SINK-GATHER-NEXT: [[T0:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[I]]
; SINK-GATHER-NEXT: [[T1:%.*]] = load i32, ptr [[T0]], align 4
; SINK-GATHER-NEXT: br i1 [[C]], label [[IF_THEN:%.*]], label [[FOR_INC]]
; SINK-GATHER: if.then:
; SINK-GATHER-NEXT: [[T2:%.*]] = getelementptr inbounds i32, ptr [[B]], i64 [[I]]
; SINK-GATHER-NEXT: [[T3:%.*]] = load i32, ptr [[T2]], align 4
; SINK-GATHER-NEXT: [[T4:%.*]] = sdiv i32 [[T3]], [[X]]
; SINK-GATHER-NEXT: [[T5:%.*]] = add nsw i32 [[T4]], [[T1]]
; SINK-GATHER-NEXT: br label [[FOR_INC]]
; SINK-GATHER: for.inc:
; SINK-GATHER-NEXT: [[T6:%.*]] = phi i32 [ [[T1]], [[FOR_BODY]] ], [ [[T5]], [[IF_THEN]] ]
; SINK-GATHER-NEXT: [[T7]] = add i32 [[R]], [[T6]]
; SINK-GATHER-NEXT: [[I_NEXT]] = add nuw nsw i64 [[I]], 1
; SINK-GATHER-NEXT: [[COND:%.*]] = icmp eq i64 [[I_NEXT]], 10000
; SINK-GATHER-NEXT: br i1 [[COND]], label [[FOR_END]], label [[FOR_BODY]], !llvm.loop [[LOOP3:![0-9]+]]
; SINK-GATHER: for.end:
; SINK-GATHER-NEXT: [[T8:%.*]] = phi i32 [ [[T7]], [[FOR_INC]] ], [ [[TMP49]], [[MIDDLE_BLOCK]] ]
; SINK-GATHER-NEXT: ret i32 [[T8]]
;
entry:
br label %for.body
for.body:
%i = phi i64 [ 0, %entry ], [ %i.next, %for.inc ]
%r = phi i32 [ 0, %entry ], [ %t7, %for.inc ]
%t0 = getelementptr inbounds i32, ptr %a, i64 %i
%t1 = load i32, ptr %t0, align 4
br i1 %c, label %if.then, label %for.inc
if.then:
%t2 = getelementptr inbounds i32, ptr %b, i64 %i
%t3 = load i32, ptr %t2, align 4
%t4 = sdiv i32 %t3, %x
%t5 = add nsw i32 %t4, %t1
br label %for.inc
for.inc:
%t6 = phi i32 [ %t1, %for.body ], [ %t5, %if.then]
%t7 = add i32 %r, %t6
%i.next = add nuw nsw i64 %i, 1
%cond = icmp eq i64 %i.next, 10000
br i1 %cond, label %for.end, label %for.body
for.end:
%t8 = phi i32 [ %t7, %for.inc ]
ret i32 %t8
}
; This test ensures that a load, which would have been widened otherwise is
; instead scalarized if Cost-Model so decided as part of its
; sink-scalar-operands optimization for predicated instructions.
define i32 @scalarize_and_sink_gather(ptr %a, i1 %c, i32 %x, i64 %n) {
; CHECK-LABEL: @scalarize_and_sink_gather(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[SMAX:%.*]] = call i64 @llvm.smax.i64(i64 [[N:%.*]], i64 1)
; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[SMAX]], 2
; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK: vector.ph:
; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[SMAX]], 2
; CHECK-NEXT: [[N_VEC:%.*]] = sub i64 [[SMAX]], [[N_MOD_VF]]
; CHECK-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <2 x i1> poison, i1 [[C:%.*]], i64 0
; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <2 x i1> [[BROADCAST_SPLATINSERT]], <2 x i1> poison, <2 x i32> zeroinitializer
; CHECK-NEXT: [[BROADCAST_SPLATINSERT3:%.*]] = insertelement <2 x i32> poison, i32 [[X:%.*]], i64 0
; CHECK-NEXT: [[BROADCAST_SPLAT4:%.*]] = shufflevector <2 x i32> [[BROADCAST_SPLATINSERT3]], <2 x i32> poison, <2 x i32> zeroinitializer
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK: vector.body:
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[PRED_UDIV_CONTINUE2:%.*]] ]
; CHECK-NEXT: [[VEC_IND:%.*]] = phi <2 x i64> [ <i64 0, i64 1>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[PRED_UDIV_CONTINUE2]] ]
; CHECK-NEXT: [[VEC_PHI:%.*]] = phi <2 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[TMP18:%.*]], [[PRED_UDIV_CONTINUE2]] ]
; CHECK-NEXT: [[TMP0:%.*]] = mul <2 x i64> [[VEC_IND]], <i64 777, i64 777>
; CHECK-NEXT: [[TMP1:%.*]] = extractelement <2 x i1> [[BROADCAST_SPLAT]], i32 0
; CHECK-NEXT: br i1 [[TMP1]], label [[PRED_UDIV_IF:%.*]], label [[PRED_UDIV_CONTINUE:%.*]]
; CHECK: pred.udiv.if:
; CHECK-NEXT: [[TMP2:%.*]] = extractelement <2 x i64> [[TMP0]], i32 0
; CHECK-NEXT: [[TMP3:%.*]] = getelementptr inbounds i32, ptr [[A:%.*]], i64 [[TMP2]]
; CHECK-NEXT: [[TMP4:%.*]] = load i32, ptr [[TMP3]], align 4
; CHECK-NEXT: [[TMP5:%.*]] = udiv i32 [[TMP4]], [[X]]
; CHECK-NEXT: [[TMP6:%.*]] = insertelement <2 x i32> poison, i32 [[TMP5]], i32 0
; CHECK-NEXT: br label [[PRED_UDIV_CONTINUE]]
; CHECK: pred.udiv.continue:
; CHECK-NEXT: [[TMP7:%.*]] = phi i32 [ poison, [[VECTOR_BODY]] ], [ [[TMP4]], [[PRED_UDIV_IF]] ]
; CHECK-NEXT: [[TMP8:%.*]] = phi <2 x i32> [ poison, [[VECTOR_BODY]] ], [ [[TMP6]], [[PRED_UDIV_IF]] ]
; CHECK-NEXT: [[TMP9:%.*]] = extractelement <2 x i1> [[BROADCAST_SPLAT]], i32 1
; CHECK-NEXT: br i1 [[TMP9]], label [[PRED_UDIV_IF1:%.*]], label [[PRED_UDIV_CONTINUE2]]
; CHECK: pred.udiv.if1:
; CHECK-NEXT: [[TMP10:%.*]] = extractelement <2 x i64> [[TMP0]], i32 1
; CHECK-NEXT: [[TMP11:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[TMP10]]
; CHECK-NEXT: [[TMP12:%.*]] = load i32, ptr [[TMP11]], align 4
; CHECK-NEXT: [[TMP13:%.*]] = udiv i32 [[TMP12]], [[X]]
; CHECK-NEXT: [[TMP14:%.*]] = insertelement <2 x i32> [[TMP8]], i32 [[TMP13]], i32 1
; CHECK-NEXT: br label [[PRED_UDIV_CONTINUE2]]
; CHECK: pred.udiv.continue2:
; CHECK-NEXT: [[TMP15:%.*]] = phi i32 [ poison, [[PRED_UDIV_CONTINUE]] ], [ [[TMP12]], [[PRED_UDIV_IF1]] ]
; CHECK-NEXT: [[TMP16:%.*]] = phi <2 x i32> [ [[TMP8]], [[PRED_UDIV_CONTINUE]] ], [ [[TMP14]], [[PRED_UDIV_IF1]] ]
; CHECK-NEXT: [[PREDPHI:%.*]] = select <2 x i1> [[BROADCAST_SPLAT]], <2 x i32> [[TMP16]], <2 x i32> [[BROADCAST_SPLAT4]]
; CHECK-NEXT: [[TMP18]] = add <2 x i32> [[VEC_PHI]], [[PREDPHI]]
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 2
; CHECK-NEXT: [[VEC_IND_NEXT]] = add <2 x i64> [[VEC_IND]], <i64 2, i64 2>
; CHECK-NEXT: [[TMP19:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT: br i1 [[TMP19]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP3:![0-9]+]]
; CHECK: middle.block:
; CHECK-NEXT: [[TMP20:%.*]] = call i32 @llvm.vector.reduce.add.v2i32(<2 x i32> [[TMP18]])
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[SMAX]], [[N_VEC]]
; CHECK-NEXT: br i1 [[CMP_N]], label [[FOR_END:%.*]], label [[SCALAR_PH]]
; CHECK: scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: [[BC_MERGE_RDX:%.*]] = phi i32 [ [[TMP20]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY]] ]
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[I:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[I_NEXT:%.*]], [[FOR_INC:%.*]] ]
; CHECK-NEXT: [[R:%.*]] = phi i32 [ [[BC_MERGE_RDX]], [[SCALAR_PH]] ], [ [[T6:%.*]], [[FOR_INC]] ]
; CHECK-NEXT: [[I7:%.*]] = mul i64 [[I]], 777
; CHECK-NEXT: br i1 [[C]], label [[IF_THEN:%.*]], label [[FOR_INC]]
; CHECK: if.then:
; CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[I7]]
; CHECK-NEXT: [[T2:%.*]] = load i32, ptr [[T0]], align 4
; CHECK-NEXT: [[T4:%.*]] = udiv i32 [[T2]], [[X]]
; CHECK-NEXT: br label [[FOR_INC]]
; CHECK: for.inc:
; CHECK-NEXT: [[T5:%.*]] = phi i32 [ [[X]], [[FOR_BODY]] ], [ [[T4]], [[IF_THEN]] ]
; CHECK-NEXT: [[T6]] = add i32 [[R]], [[T5]]
; CHECK-NEXT: [[I_NEXT]] = add nuw nsw i64 [[I]], 1
; CHECK-NEXT: [[COND:%.*]] = icmp slt i64 [[I_NEXT]], [[N]]
; CHECK-NEXT: br i1 [[COND]], label [[FOR_BODY]], label [[FOR_END]], !llvm.loop [[LOOP4:![0-9]+]]
; CHECK: for.end:
; CHECK-NEXT: [[T7:%.*]] = phi i32 [ [[T6]], [[FOR_INC]] ], [ [[TMP20]], [[MIDDLE_BLOCK]] ]
; CHECK-NEXT: ret i32 [[T7]]
;
; SINK-GATHER-LABEL: @scalarize_and_sink_gather(
; SINK-GATHER-NEXT: entry:
; SINK-GATHER-NEXT: [[SMAX:%.*]] = call i64 @llvm.smax.i64(i64 [[N:%.*]], i64 1)
; SINK-GATHER-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[SMAX]], 8
; SINK-GATHER-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; SINK-GATHER: vector.ph:
; SINK-GATHER-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[SMAX]], 8
; SINK-GATHER-NEXT: [[N_VEC:%.*]] = sub i64 [[SMAX]], [[N_MOD_VF]]
; SINK-GATHER-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <8 x i1> poison, i1 [[C:%.*]], i64 0
; SINK-GATHER-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <8 x i1> [[BROADCAST_SPLATINSERT]], <8 x i1> poison, <8 x i32> zeroinitializer
; SINK-GATHER-NEXT: [[BROADCAST_SPLATINSERT15:%.*]] = insertelement <8 x i32> poison, i32 [[X:%.*]], i64 0
; SINK-GATHER-NEXT: [[BROADCAST_SPLAT16:%.*]] = shufflevector <8 x i32> [[BROADCAST_SPLATINSERT15]], <8 x i32> poison, <8 x i32> zeroinitializer
; SINK-GATHER-NEXT: br label [[VECTOR_BODY:%.*]]
; SINK-GATHER: vector.body:
; SINK-GATHER-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[PRED_UDIV_CONTINUE14:%.*]] ]
; SINK-GATHER-NEXT: [[VEC_IND:%.*]] = phi <8 x i64> [ <i64 0, i64 1, i64 2, i64 3, i64 4, i64 5, i64 6, i64 7>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[PRED_UDIV_CONTINUE14]] ]
; SINK-GATHER-NEXT: [[VEC_PHI:%.*]] = phi <8 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[TMP66:%.*]], [[PRED_UDIV_CONTINUE14]] ]
; SINK-GATHER-NEXT: [[TMP0:%.*]] = mul <8 x i64> [[VEC_IND]], <i64 777, i64 777, i64 777, i64 777, i64 777, i64 777, i64 777, i64 777>
; SINK-GATHER-NEXT: [[TMP1:%.*]] = extractelement <8 x i1> [[BROADCAST_SPLAT]], i32 0
; SINK-GATHER-NEXT: br i1 [[TMP1]], label [[PRED_UDIV_IF:%.*]], label [[PRED_UDIV_CONTINUE:%.*]]
; SINK-GATHER: pred.udiv.if:
; SINK-GATHER-NEXT: [[TMP2:%.*]] = extractelement <8 x i64> [[TMP0]], i32 0
; SINK-GATHER-NEXT: [[TMP3:%.*]] = getelementptr inbounds i32, ptr [[A:%.*]], i64 [[TMP2]]
; SINK-GATHER-NEXT: [[TMP4:%.*]] = load i32, ptr [[TMP3]], align 4
; SINK-GATHER-NEXT: [[TMP5:%.*]] = udiv i32 [[TMP4]], [[X]]
; SINK-GATHER-NEXT: [[TMP6:%.*]] = insertelement <8 x i32> poison, i32 [[TMP5]], i32 0
; SINK-GATHER-NEXT: br label [[PRED_UDIV_CONTINUE]]
; SINK-GATHER: pred.udiv.continue:
; SINK-GATHER-NEXT: [[TMP7:%.*]] = phi i32 [ poison, [[VECTOR_BODY]] ], [ [[TMP4]], [[PRED_UDIV_IF]] ]
; SINK-GATHER-NEXT: [[TMP8:%.*]] = phi <8 x i32> [ poison, [[VECTOR_BODY]] ], [ [[TMP6]], [[PRED_UDIV_IF]] ]
; SINK-GATHER-NEXT: [[TMP9:%.*]] = extractelement <8 x i1> [[BROADCAST_SPLAT]], i32 1
; SINK-GATHER-NEXT: br i1 [[TMP9]], label [[PRED_UDIV_IF1:%.*]], label [[PRED_UDIV_CONTINUE2:%.*]]
; SINK-GATHER: pred.udiv.if1:
; SINK-GATHER-NEXT: [[TMP10:%.*]] = extractelement <8 x i64> [[TMP0]], i32 1
; SINK-GATHER-NEXT: [[TMP11:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[TMP10]]
; SINK-GATHER-NEXT: [[TMP12:%.*]] = load i32, ptr [[TMP11]], align 4
; SINK-GATHER-NEXT: [[TMP13:%.*]] = udiv i32 [[TMP12]], [[X]]
; SINK-GATHER-NEXT: [[TMP14:%.*]] = insertelement <8 x i32> [[TMP8]], i32 [[TMP13]], i32 1
; SINK-GATHER-NEXT: br label [[PRED_UDIV_CONTINUE2]]
; SINK-GATHER: pred.udiv.continue2:
; SINK-GATHER-NEXT: [[TMP15:%.*]] = phi i32 [ poison, [[PRED_UDIV_CONTINUE]] ], [ [[TMP12]], [[PRED_UDIV_IF1]] ]
; SINK-GATHER-NEXT: [[TMP16:%.*]] = phi <8 x i32> [ [[TMP8]], [[PRED_UDIV_CONTINUE]] ], [ [[TMP14]], [[PRED_UDIV_IF1]] ]
; SINK-GATHER-NEXT: [[TMP17:%.*]] = extractelement <8 x i1> [[BROADCAST_SPLAT]], i32 2
; SINK-GATHER-NEXT: br i1 [[TMP17]], label [[PRED_UDIV_IF3:%.*]], label [[PRED_UDIV_CONTINUE4:%.*]]
; SINK-GATHER: pred.udiv.if3:
; SINK-GATHER-NEXT: [[TMP18:%.*]] = extractelement <8 x i64> [[TMP0]], i32 2
; SINK-GATHER-NEXT: [[TMP19:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[TMP18]]
; SINK-GATHER-NEXT: [[TMP20:%.*]] = load i32, ptr [[TMP19]], align 4
; SINK-GATHER-NEXT: [[TMP21:%.*]] = udiv i32 [[TMP20]], [[X]]
; SINK-GATHER-NEXT: [[TMP22:%.*]] = insertelement <8 x i32> [[TMP16]], i32 [[TMP21]], i32 2
; SINK-GATHER-NEXT: br label [[PRED_UDIV_CONTINUE4]]
; SINK-GATHER: pred.udiv.continue4:
; SINK-GATHER-NEXT: [[TMP23:%.*]] = phi i32 [ poison, [[PRED_UDIV_CONTINUE2]] ], [ [[TMP20]], [[PRED_UDIV_IF3]] ]
; SINK-GATHER-NEXT: [[TMP24:%.*]] = phi <8 x i32> [ [[TMP16]], [[PRED_UDIV_CONTINUE2]] ], [ [[TMP22]], [[PRED_UDIV_IF3]] ]
; SINK-GATHER-NEXT: [[TMP25:%.*]] = extractelement <8 x i1> [[BROADCAST_SPLAT]], i32 3
; SINK-GATHER-NEXT: br i1 [[TMP25]], label [[PRED_UDIV_IF5:%.*]], label [[PRED_UDIV_CONTINUE6:%.*]]
; SINK-GATHER: pred.udiv.if5:
; SINK-GATHER-NEXT: [[TMP26:%.*]] = extractelement <8 x i64> [[TMP0]], i32 3
; SINK-GATHER-NEXT: [[TMP27:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[TMP26]]
; SINK-GATHER-NEXT: [[TMP28:%.*]] = load i32, ptr [[TMP27]], align 4
; SINK-GATHER-NEXT: [[TMP29:%.*]] = udiv i32 [[TMP28]], [[X]]
; SINK-GATHER-NEXT: [[TMP30:%.*]] = insertelement <8 x i32> [[TMP24]], i32 [[TMP29]], i32 3
; SINK-GATHER-NEXT: br label [[PRED_UDIV_CONTINUE6]]
; SINK-GATHER: pred.udiv.continue6:
; SINK-GATHER-NEXT: [[TMP31:%.*]] = phi i32 [ poison, [[PRED_UDIV_CONTINUE4]] ], [ [[TMP28]], [[PRED_UDIV_IF5]] ]
; SINK-GATHER-NEXT: [[TMP32:%.*]] = phi <8 x i32> [ [[TMP24]], [[PRED_UDIV_CONTINUE4]] ], [ [[TMP30]], [[PRED_UDIV_IF5]] ]
; SINK-GATHER-NEXT: [[TMP33:%.*]] = extractelement <8 x i1> [[BROADCAST_SPLAT]], i32 4
; SINK-GATHER-NEXT: br i1 [[TMP33]], label [[PRED_UDIV_IF7:%.*]], label [[PRED_UDIV_CONTINUE8:%.*]]
; SINK-GATHER: pred.udiv.if7:
; SINK-GATHER-NEXT: [[TMP34:%.*]] = extractelement <8 x i64> [[TMP0]], i32 4
; SINK-GATHER-NEXT: [[TMP35:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[TMP34]]
; SINK-GATHER-NEXT: [[TMP36:%.*]] = load i32, ptr [[TMP35]], align 4
; SINK-GATHER-NEXT: [[TMP37:%.*]] = udiv i32 [[TMP36]], [[X]]
; SINK-GATHER-NEXT: [[TMP38:%.*]] = insertelement <8 x i32> [[TMP32]], i32 [[TMP37]], i32 4
; SINK-GATHER-NEXT: br label [[PRED_UDIV_CONTINUE8]]
; SINK-GATHER: pred.udiv.continue8:
; SINK-GATHER-NEXT: [[TMP39:%.*]] = phi i32 [ poison, [[PRED_UDIV_CONTINUE6]] ], [ [[TMP36]], [[PRED_UDIV_IF7]] ]
; SINK-GATHER-NEXT: [[TMP40:%.*]] = phi <8 x i32> [ [[TMP32]], [[PRED_UDIV_CONTINUE6]] ], [ [[TMP38]], [[PRED_UDIV_IF7]] ]
; SINK-GATHER-NEXT: [[TMP41:%.*]] = extractelement <8 x i1> [[BROADCAST_SPLAT]], i32 5
; SINK-GATHER-NEXT: br i1 [[TMP41]], label [[PRED_UDIV_IF9:%.*]], label [[PRED_UDIV_CONTINUE10:%.*]]
; SINK-GATHER: pred.udiv.if9:
; SINK-GATHER-NEXT: [[TMP42:%.*]] = extractelement <8 x i64> [[TMP0]], i32 5
; SINK-GATHER-NEXT: [[TMP43:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[TMP42]]
; SINK-GATHER-NEXT: [[TMP44:%.*]] = load i32, ptr [[TMP43]], align 4
; SINK-GATHER-NEXT: [[TMP45:%.*]] = udiv i32 [[TMP44]], [[X]]
; SINK-GATHER-NEXT: [[TMP46:%.*]] = insertelement <8 x i32> [[TMP40]], i32 [[TMP45]], i32 5
; SINK-GATHER-NEXT: br label [[PRED_UDIV_CONTINUE10]]
; SINK-GATHER: pred.udiv.continue10:
; SINK-GATHER-NEXT: [[TMP47:%.*]] = phi i32 [ poison, [[PRED_UDIV_CONTINUE8]] ], [ [[TMP44]], [[PRED_UDIV_IF9]] ]
; SINK-GATHER-NEXT: [[TMP48:%.*]] = phi <8 x i32> [ [[TMP40]], [[PRED_UDIV_CONTINUE8]] ], [ [[TMP46]], [[PRED_UDIV_IF9]] ]
; SINK-GATHER-NEXT: [[TMP49:%.*]] = extractelement <8 x i1> [[BROADCAST_SPLAT]], i32 6
; SINK-GATHER-NEXT: br i1 [[TMP49]], label [[PRED_UDIV_IF11:%.*]], label [[PRED_UDIV_CONTINUE12:%.*]]
; SINK-GATHER: pred.udiv.if11:
; SINK-GATHER-NEXT: [[TMP50:%.*]] = extractelement <8 x i64> [[TMP0]], i32 6
; SINK-GATHER-NEXT: [[TMP51:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[TMP50]]
; SINK-GATHER-NEXT: [[TMP52:%.*]] = load i32, ptr [[TMP51]], align 4
; SINK-GATHER-NEXT: [[TMP53:%.*]] = udiv i32 [[TMP52]], [[X]]
; SINK-GATHER-NEXT: [[TMP54:%.*]] = insertelement <8 x i32> [[TMP48]], i32 [[TMP53]], i32 6
; SINK-GATHER-NEXT: br label [[PRED_UDIV_CONTINUE12]]
; SINK-GATHER: pred.udiv.continue12:
; SINK-GATHER-NEXT: [[TMP55:%.*]] = phi i32 [ poison, [[PRED_UDIV_CONTINUE10]] ], [ [[TMP52]], [[PRED_UDIV_IF11]] ]
; SINK-GATHER-NEXT: [[TMP56:%.*]] = phi <8 x i32> [ [[TMP48]], [[PRED_UDIV_CONTINUE10]] ], [ [[TMP54]], [[PRED_UDIV_IF11]] ]
; SINK-GATHER-NEXT: [[TMP57:%.*]] = extractelement <8 x i1> [[BROADCAST_SPLAT]], i32 7
; SINK-GATHER-NEXT: br i1 [[TMP57]], label [[PRED_UDIV_IF13:%.*]], label [[PRED_UDIV_CONTINUE14]]
; SINK-GATHER: pred.udiv.if13:
; SINK-GATHER-NEXT: [[TMP58:%.*]] = extractelement <8 x i64> [[TMP0]], i32 7
; SINK-GATHER-NEXT: [[TMP59:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[TMP58]]
; SINK-GATHER-NEXT: [[TMP60:%.*]] = load i32, ptr [[TMP59]], align 4
; SINK-GATHER-NEXT: [[TMP61:%.*]] = udiv i32 [[TMP60]], [[X]]
; SINK-GATHER-NEXT: [[TMP62:%.*]] = insertelement <8 x i32> [[TMP56]], i32 [[TMP61]], i32 7
; SINK-GATHER-NEXT: br label [[PRED_UDIV_CONTINUE14]]
; SINK-GATHER: pred.udiv.continue14:
; SINK-GATHER-NEXT: [[TMP63:%.*]] = phi i32 [ poison, [[PRED_UDIV_CONTINUE12]] ], [ [[TMP60]], [[PRED_UDIV_IF13]] ]
; SINK-GATHER-NEXT: [[TMP64:%.*]] = phi <8 x i32> [ [[TMP56]], [[PRED_UDIV_CONTINUE12]] ], [ [[TMP62]], [[PRED_UDIV_IF13]] ]
; SINK-GATHER-NEXT: [[PREDPHI:%.*]] = select <8 x i1> [[BROADCAST_SPLAT]], <8 x i32> [[TMP64]], <8 x i32> [[BROADCAST_SPLAT16]]
; SINK-GATHER-NEXT: [[TMP66]] = add <8 x i32> [[VEC_PHI]], [[PREDPHI]]
; SINK-GATHER-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 8
; SINK-GATHER-NEXT: [[VEC_IND_NEXT]] = add <8 x i64> [[VEC_IND]], <i64 8, i64 8, i64 8, i64 8, i64 8, i64 8, i64 8, i64 8>
; SINK-GATHER-NEXT: [[TMP67:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; SINK-GATHER-NEXT: br i1 [[TMP67]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP4:![0-9]+]]
; SINK-GATHER: middle.block:
; SINK-GATHER-NEXT: [[TMP68:%.*]] = call i32 @llvm.vector.reduce.add.v8i32(<8 x i32> [[TMP66]])
; SINK-GATHER-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[SMAX]], [[N_VEC]]
; SINK-GATHER-NEXT: br i1 [[CMP_N]], label [[FOR_END:%.*]], label [[SCALAR_PH]]
; SINK-GATHER: scalar.ph:
; SINK-GATHER-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
; SINK-GATHER-NEXT: [[BC_MERGE_RDX:%.*]] = phi i32 [ [[TMP68]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY]] ]
; SINK-GATHER-NEXT: br label [[FOR_BODY:%.*]]
; SINK-GATHER: for.body:
; SINK-GATHER-NEXT: [[I:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[I_NEXT:%.*]], [[FOR_INC:%.*]] ]
; SINK-GATHER-NEXT: [[R:%.*]] = phi i32 [ [[BC_MERGE_RDX]], [[SCALAR_PH]] ], [ [[T6:%.*]], [[FOR_INC]] ]
; SINK-GATHER-NEXT: [[I7:%.*]] = mul i64 [[I]], 777
; SINK-GATHER-NEXT: br i1 [[C]], label [[IF_THEN:%.*]], label [[FOR_INC]]
; SINK-GATHER: if.then:
; SINK-GATHER-NEXT: [[T0:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[I7]]
; SINK-GATHER-NEXT: [[T2:%.*]] = load i32, ptr [[T0]], align 4
; SINK-GATHER-NEXT: [[T4:%.*]] = udiv i32 [[T2]], [[X]]
; SINK-GATHER-NEXT: br label [[FOR_INC]]
; SINK-GATHER: for.inc:
; SINK-GATHER-NEXT: [[T5:%.*]] = phi i32 [ [[X]], [[FOR_BODY]] ], [ [[T4]], [[IF_THEN]] ]
; SINK-GATHER-NEXT: [[T6]] = add i32 [[R]], [[T5]]
; SINK-GATHER-NEXT: [[I_NEXT]] = add nuw nsw i64 [[I]], 1
; SINK-GATHER-NEXT: [[COND:%.*]] = icmp slt i64 [[I_NEXT]], [[N]]
; SINK-GATHER-NEXT: br i1 [[COND]], label [[FOR_BODY]], label [[FOR_END]], !llvm.loop [[LOOP5:![0-9]+]]
; SINK-GATHER: for.end:
; SINK-GATHER-NEXT: [[T7:%.*]] = phi i32 [ [[T6]], [[FOR_INC]] ], [ [[TMP68]], [[MIDDLE_BLOCK]] ]
; SINK-GATHER-NEXT: ret i32 [[T7]]
;
entry:
br label %for.body
for.body:
%i = phi i64 [ 0, %entry ], [ %i.next, %for.inc ]
%r = phi i32 [ 0, %entry ], [ %t6, %for.inc ]
%i7 = mul i64 %i, 777
br i1 %c, label %if.then, label %for.inc
if.then:
%t0 = getelementptr inbounds i32, ptr %a, i64 %i7
%t2 = load i32, ptr %t0, align 4
%t4 = udiv i32 %t2, %x
br label %for.inc
for.inc:
%t5 = phi i32 [ %x, %for.body ], [ %t4, %if.then]
%t6 = add i32 %r, %t5
%i.next = add nuw nsw i64 %i, 1
%cond = icmp slt i64 %i.next, %n
br i1 %cond, label %for.body, label %for.end
for.end:
%t7 = phi i32 [ %t6, %for.inc ]
ret i32 %t7
}
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