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llvm-project/llvm/test/Transforms/LoopVectorize/non-widenable-intrinsics-outer-loop.ll
Henry Jiang 5d624b5b93
[VPlan] Stop outerloop vectorization from vectorizing nonvector intrinsics (#185347) 
In outer-loop VPlan, avoid emitting vector intrinsic calls for intrinsics
without a vector form. In VPRecipeBuilder, detect missing vector intrinsic
mapping and emit scalar handling instead of a vector call.

Also fix assertion when `llvm.pseudoprobe` in VPlan's native path is being
treated as a `WIDEN-INTRINSIC`.

Reproducer: https://godbolt.org/z/GsPYobvYs
2026-03-31 16:01:39 -07:00

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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 6
; RUN: opt -S -passes='loop-vectorize,verify' -enable-vplan-native-path -force-vector-width=2 < %s | FileCheck %s
; Test that non-widenable intrinsics in the outer loop are emitted as replicate
; recipe and do not crash the VPlan native path.
; Check that llvm.assume is replicated per lane for the assumption.
define void @test_assume(ptr %arr, i64 %n) {
; CHECK-LABEL: define void @test_assume(
; CHECK-SAME: ptr [[ARR:%.*]], i64 [[N:%.*]]) {
; CHECK-NEXT: [[ENTRY:.*]]:
; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[N]], 2
; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]
; CHECK: [[VECTOR_PH]]:
; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[N]], 2
; CHECK-NEXT: [[N_VEC:%.*]] = sub i64 [[N]], [[N_MOD_VF]]
; CHECK-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <2 x i64> poison, i64 [[N]], i64 0
; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <2 x i64> [[BROADCAST_SPLATINSERT]], <2 x i64> poison, <2 x i32> zeroinitializer
; CHECK-NEXT: br label %[[VECTOR_BODY:.*]]
; CHECK: [[VECTOR_BODY]]:
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_LATCH:.*]] ]
; CHECK-NEXT: [[VEC_IND:%.*]] = phi <2 x i64> [ <i64 0, i64 1>, %[[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], %[[VECTOR_LATCH]] ]
; CHECK-NEXT: [[TMP0:%.*]] = icmp sgt <2 x i64> [[VEC_IND]], zeroinitializer
; CHECK-NEXT: [[TMP9:%.*]] = extractelement <2 x i1> [[TMP0]], i32 0
; CHECK-NEXT: [[TMP8:%.*]] = extractelement <2 x i1> [[TMP0]], i32 1
; CHECK-NEXT: call void @llvm.assume(i1 [[TMP9]])
; CHECK-NEXT: call void @llvm.assume(i1 [[TMP8]])
; CHECK-NEXT: br label %[[INNER1:.*]]
; CHECK: [[INNER1]]:
; CHECK-NEXT: [[TMP1:%.*]] = phi <2 x i64> [ zeroinitializer, %[[VECTOR_BODY]] ], [ [[TMP4:%.*]], %[[INNER1]] ]
; CHECK-NEXT: [[TMP2:%.*]] = add <2 x i64> [[VEC_IND]], [[TMP1]]
; CHECK-NEXT: [[TMP3:%.*]] = getelementptr inbounds i32, ptr [[ARR]], <2 x i64> [[TMP2]]
; CHECK-NEXT: call void @llvm.masked.scatter.v2i32.v2p0(<2 x i32> splat (i32 1), <2 x ptr> align 4 [[TMP3]], <2 x i1> splat (i1 true))
; CHECK-NEXT: [[TMP4]] = add <2 x i64> [[TMP1]], splat (i64 1)
; CHECK-NEXT: [[TMP5:%.*]] = icmp eq <2 x i64> [[TMP4]], [[BROADCAST_SPLAT]]
; CHECK-NEXT: [[TMP6:%.*]] = extractelement <2 x i1> [[TMP5]], i32 0
; CHECK-NEXT: br i1 [[TMP6]], label %[[VECTOR_LATCH]], label %[[INNER1]]
; CHECK: [[VECTOR_LATCH]]:
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 2
; CHECK-NEXT: [[VEC_IND_NEXT]] = add <2 x i64> [[VEC_IND]], splat (i64 2)
; CHECK-NEXT: [[TMP7:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT: br i1 [[TMP7]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; CHECK: [[MIDDLE_BLOCK]]:
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[N]], [[N_VEC]]
; CHECK-NEXT: br i1 [[CMP_N]], label %[[EXIT:.*]], label %[[SCALAR_PH]]
; CHECK: [[SCALAR_PH]]:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], %[[MIDDLE_BLOCK]] ], [ 0, %[[ENTRY]] ]
; CHECK-NEXT: br label %[[OUTER_HEADER:.*]]
; CHECK: [[OUTER_HEADER]]:
; CHECK-NEXT: [[J:%.*]] = phi i64 [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ], [ [[J_NEXT:%.*]], %[[OUTER_LATCH:.*]] ]
; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i64 [[J]], 0
; CHECK-NEXT: call void @llvm.assume(i1 [[CMP]])
; CHECK-NEXT: br label %[[INNER:.*]]
; CHECK: [[INNER]]:
; CHECK-NEXT: [[K:%.*]] = phi i64 [ 0, %[[OUTER_HEADER]] ], [ [[K_NEXT:%.*]], %[[INNER]] ]
; CHECK-NEXT: [[IDX:%.*]] = add i64 [[J]], [[K]]
; CHECK-NEXT: [[PTR:%.*]] = getelementptr inbounds i32, ptr [[ARR]], i64 [[IDX]]
; CHECK-NEXT: store i32 1, ptr [[PTR]], align 4
; CHECK-NEXT: [[K_NEXT]] = add i64 [[K]], 1
; CHECK-NEXT: [[INNER_COND:%.*]] = icmp eq i64 [[K_NEXT]], [[N]]
; CHECK-NEXT: br i1 [[INNER_COND]], label %[[OUTER_LATCH]], label %[[INNER]]
; CHECK: [[OUTER_LATCH]]:
; CHECK-NEXT: [[J_NEXT]] = add i64 [[J]], 1
; CHECK-NEXT: [[OUTER_COND:%.*]] = icmp eq i64 [[J_NEXT]], [[N]]
; CHECK-NEXT: br i1 [[OUTER_COND]], label %[[EXIT]], label %[[OUTER_HEADER]], !llvm.loop [[LOOP4:![0-9]+]]
; CHECK: [[EXIT]]:
; CHECK-NEXT: ret void
;
entry:
br label %outer.header
outer.header:
%j = phi i64 [ 0, %entry ], [ %j.next, %outer.latch ]
%cmp = icmp sgt i64 %j, 0
call void @llvm.assume(i1 %cmp)
br label %inner
inner:
%k = phi i64 [ 0, %outer.header ], [ %k.next, %inner ]
%idx = add i64 %j, %k
%ptr = getelementptr inbounds i32, ptr %arr, i64 %idx
store i32 1, ptr %ptr, align 4
%k.next = add i64 %k, 1
%inner.cond = icmp eq i64 %k.next, %n
br i1 %inner.cond, label %outer.latch, label %inner
outer.latch:
%j.next = add i64 %j, 1
%outer.cond = icmp eq i64 %j.next, %n
br i1 %outer.cond, label %exit, label %outer.header, !llvm.loop !0
exit:
ret void
}
; Check that llvm.assume with a noncanonical induction variable is replicated per lane.
define void @test_assume_non_canonical_iv(ptr %arr, i64 %n) {
; CHECK-LABEL: define void @test_assume_non_canonical_iv(
; CHECK-SAME: ptr [[ARR:%.*]], i64 [[N:%.*]]) {
; CHECK-NEXT: [[ENTRY:.*]]:
; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[N]], 2
; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]
; CHECK: [[VECTOR_PH]]:
; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[N]], 2
; CHECK-NEXT: [[N_VEC:%.*]] = sub i64 [[N]], [[N_MOD_VF]]
; CHECK-NEXT: [[TMP0:%.*]] = mul i64 [[N_VEC]], 3
; CHECK-NEXT: [[TMP1:%.*]] = add i64 10, [[TMP0]]
; CHECK-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <2 x i64> poison, i64 [[N]], i64 0
; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <2 x i64> [[BROADCAST_SPLATINSERT]], <2 x i64> poison, <2 x i32> zeroinitializer
; CHECK-NEXT: br label %[[VECTOR_BODY:.*]]
; CHECK: [[VECTOR_BODY]]:
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_LATCH:.*]] ]
; CHECK-NEXT: [[VEC_IND:%.*]] = phi <2 x i64> [ <i64 10, i64 13>, %[[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], %[[VECTOR_LATCH]] ]
; CHECK-NEXT: [[TMP2:%.*]] = icmp sge <2 x i64> [[VEC_IND]], zeroinitializer
; CHECK-NEXT: [[TMP3:%.*]] = extractelement <2 x i1> [[TMP2]], i32 0
; CHECK-NEXT: [[TMP4:%.*]] = extractelement <2 x i1> [[TMP2]], i32 1
; CHECK-NEXT: call void @llvm.assume(i1 [[TMP3]])
; CHECK-NEXT: call void @llvm.assume(i1 [[TMP4]])
; CHECK-NEXT: br label %[[INNER1:.*]]
; CHECK: [[INNER1]]:
; CHECK-NEXT: [[TMP5:%.*]] = phi <2 x i64> [ zeroinitializer, %[[VECTOR_BODY]] ], [ [[TMP10:%.*]], %[[INNER1]] ]
; CHECK-NEXT: [[TMP6:%.*]] = add <2 x i64> [[VEC_IND]], [[TMP5]]
; CHECK-NEXT: [[TMP7:%.*]] = getelementptr inbounds i32, ptr [[ARR]], <2 x i64> [[TMP6]]
; CHECK-NEXT: [[WIDE_MASKED_GATHER:%.*]] = call <2 x i32> @llvm.masked.gather.v2i32.v2p0(<2 x ptr> align 4 [[TMP7]], <2 x i1> splat (i1 true), <2 x i32> poison)
; CHECK-NEXT: [[TMP8:%.*]] = select <2 x i1> [[TMP2]], <2 x i32> splat (i32 1), <2 x i32> splat (i32 -1)
; CHECK-NEXT: [[TMP9:%.*]] = add <2 x i32> [[WIDE_MASKED_GATHER]], [[TMP8]]
; CHECK-NEXT: call void @llvm.masked.scatter.v2i32.v2p0(<2 x i32> [[TMP9]], <2 x ptr> align 4 [[TMP7]], <2 x i1> splat (i1 true))
; CHECK-NEXT: [[TMP10]] = add <2 x i64> [[TMP5]], splat (i64 1)
; CHECK-NEXT: [[TMP11:%.*]] = icmp eq <2 x i64> [[TMP10]], [[BROADCAST_SPLAT]]
; CHECK-NEXT: [[TMP12:%.*]] = extractelement <2 x i1> [[TMP11]], i32 0
; CHECK-NEXT: br i1 [[TMP12]], label %[[VECTOR_LATCH]], label %[[INNER1]]
; CHECK: [[VECTOR_LATCH]]:
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 2
; CHECK-NEXT: [[VEC_IND_NEXT]] = add <2 x i64> [[VEC_IND]], splat (i64 6)
; CHECK-NEXT: [[TMP13:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT: br i1 [[TMP13]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP5:![0-9]+]]
; CHECK: [[MIDDLE_BLOCK]]:
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[N]], [[N_VEC]]
; CHECK-NEXT: br i1 [[CMP_N]], label %[[EXIT:.*]], label %[[SCALAR_PH]]
; CHECK: [[SCALAR_PH]]:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], %[[MIDDLE_BLOCK]] ], [ 0, %[[ENTRY]] ]
; CHECK-NEXT: [[BC_RESUME_VAL2:%.*]] = phi i64 [ [[TMP1]], %[[MIDDLE_BLOCK]] ], [ 10, %[[ENTRY]] ]
; CHECK-NEXT: br label %[[OUTER_HEADER:.*]]
; CHECK: [[OUTER_HEADER]]:
; CHECK-NEXT: [[J:%.*]] = phi i64 [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ], [ [[J_NEXT:%.*]], %[[OUTER_LATCH:.*]] ]
; CHECK-NEXT: [[M:%.*]] = phi i64 [ [[BC_RESUME_VAL2]], %[[SCALAR_PH]] ], [ [[M_NEXT:%.*]], %[[OUTER_LATCH]] ]
; CHECK-NEXT: [[M_NEXT]] = add i64 [[M]], 3
; CHECK-NEXT: [[CMP:%.*]] = icmp sge i64 [[M]], 0
; CHECK-NEXT: call void @llvm.assume(i1 [[CMP]])
; CHECK-NEXT: br label %[[INNER:.*]]
; CHECK: [[INNER]]:
; CHECK-NEXT: [[K:%.*]] = phi i64 [ 0, %[[OUTER_HEADER]] ], [ [[K_NEXT:%.*]], %[[INNER]] ]
; CHECK-NEXT: [[IDX:%.*]] = add i64 [[M]], [[K]]
; CHECK-NEXT: [[PTR:%.*]] = getelementptr inbounds i32, ptr [[ARR]], i64 [[IDX]]
; CHECK-NEXT: [[VAL:%.*]] = load i32, ptr [[PTR]], align 4
; CHECK-NEXT: [[INC:%.*]] = select i1 [[CMP]], i32 1, i32 -1
; CHECK-NEXT: [[VAL2:%.*]] = add i32 [[VAL]], [[INC]]
; CHECK-NEXT: store i32 [[VAL2]], ptr [[PTR]], align 4
; CHECK-NEXT: [[K_NEXT]] = add i64 [[K]], 1
; CHECK-NEXT: [[INNER_COND:%.*]] = icmp eq i64 [[K_NEXT]], [[N]]
; CHECK-NEXT: br i1 [[INNER_COND]], label %[[OUTER_LATCH]], label %[[INNER]]
; CHECK: [[OUTER_LATCH]]:
; CHECK-NEXT: [[J_NEXT]] = add i64 [[J]], 1
; CHECK-NEXT: [[OUTER_COND:%.*]] = icmp eq i64 [[J_NEXT]], [[N]]
; CHECK-NEXT: br i1 [[OUTER_COND]], label %[[EXIT]], label %[[OUTER_HEADER]], !llvm.loop [[LOOP6:![0-9]+]]
; CHECK: [[EXIT]]:
; CHECK-NEXT: ret void
;
entry:
br label %outer.header
outer.header:
%j = phi i64 [ 0, %entry ], [ %j.next, %outer.latch ]
%m = phi i64 [ 10, %entry ], [ %m.next, %outer.latch ]
%m.next = add i64 %m, 3
%cmp = icmp sge i64 %m, 0
call void @llvm.assume(i1 %cmp)
br label %inner
inner:
%k = phi i64 [ 0, %outer.header ], [ %k.next, %inner ]
%idx = add i64 %m, %k
%ptr = getelementptr inbounds i32, ptr %arr, i64 %idx
%val = load i32, ptr %ptr, align 4
%inc = select i1 %cmp, i32 1, i32 -1
%val2 = add i32 %val, %inc
store i32 %val2, ptr %ptr, align 4
%k.next = add i64 %k, 1
%inner.cond = icmp eq i64 %k.next, %n
br i1 %inner.cond, label %outer.latch, label %inner
outer.latch:
%j.next = add i64 %j, 1
%outer.cond = icmp eq i64 %j.next, %n
br i1 %outer.cond, label %exit, label %outer.header, !llvm.loop !0
exit:
ret void
}
define void @test_lifetime(ptr %arr, i64 %n) {
; CHECK-LABEL: define void @test_lifetime(
; CHECK-SAME: ptr [[ARR:%.*]], i64 [[N:%.*]]) {
; CHECK-NEXT: [[ENTRY:.*]]:
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[N]], 2
; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]
; CHECK: [[VECTOR_PH]]:
; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[N]], 2
; CHECK-NEXT: [[N_VEC:%.*]] = sub i64 [[N]], [[N_MOD_VF]]
; CHECK-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <2 x i64> poison, i64 [[N]], i64 0
; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <2 x i64> [[BROADCAST_SPLATINSERT]], <2 x i64> poison, <2 x i32> zeroinitializer
; CHECK-NEXT: br label %[[VECTOR_BODY:.*]]
; CHECK: [[VECTOR_BODY]]:
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_LATCH:.*]] ]
; CHECK-NEXT: [[VEC_IND:%.*]] = phi <2 x i64> [ <i64 0, i64 1>, %[[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], %[[VECTOR_LATCH]] ]
; CHECK-NEXT: call void @llvm.lifetime.start.p0(ptr [[A]])
; CHECK-NEXT: br label %[[INNER1:.*]]
; CHECK: [[INNER1]]:
; CHECK-NEXT: [[TMP0:%.*]] = phi <2 x i64> [ zeroinitializer, %[[VECTOR_BODY]] ], [ [[TMP3:%.*]], %[[INNER1]] ]
; CHECK-NEXT: [[TMP1:%.*]] = add <2 x i64> [[VEC_IND]], [[TMP0]]
; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds i32, ptr [[ARR]], <2 x i64> [[TMP1]]
; CHECK-NEXT: call void @llvm.masked.scatter.v2i32.v2p0(<2 x i32> splat (i32 1), <2 x ptr> align 4 [[TMP2]], <2 x i1> splat (i1 true))
; CHECK-NEXT: [[TMP3]] = add <2 x i64> [[TMP0]], splat (i64 1)
; CHECK-NEXT: [[TMP4:%.*]] = icmp eq <2 x i64> [[TMP3]], [[BROADCAST_SPLAT]]
; CHECK-NEXT: [[TMP5:%.*]] = extractelement <2 x i1> [[TMP4]], i32 0
; CHECK-NEXT: br i1 [[TMP5]], label %[[VECTOR_LATCH]], label %[[INNER1]]
; CHECK: [[VECTOR_LATCH]]:
; CHECK-NEXT: call void @llvm.lifetime.end.p0(ptr [[A]])
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 2
; CHECK-NEXT: [[VEC_IND_NEXT]] = add <2 x i64> [[VEC_IND]], splat (i64 2)
; CHECK-NEXT: [[TMP6:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT: br i1 [[TMP6]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP7:![0-9]+]]
; CHECK: [[MIDDLE_BLOCK]]:
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[N]], [[N_VEC]]
; CHECK-NEXT: br i1 [[CMP_N]], label %[[EXIT:.*]], label %[[SCALAR_PH]]
; CHECK: [[SCALAR_PH]]:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], %[[MIDDLE_BLOCK]] ], [ 0, %[[ENTRY]] ]
; CHECK-NEXT: br label %[[OUTER_HEADER:.*]]
; CHECK: [[OUTER_HEADER]]:
; CHECK-NEXT: [[J:%.*]] = phi i64 [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ], [ [[J_NEXT:%.*]], %[[OUTER_LATCH:.*]] ]
; CHECK-NEXT: call void @llvm.lifetime.start.p0(ptr [[A]])
; CHECK-NEXT: br label %[[INNER:.*]]
; CHECK: [[INNER]]:
; CHECK-NEXT: [[K:%.*]] = phi i64 [ 0, %[[OUTER_HEADER]] ], [ [[K_NEXT:%.*]], %[[INNER]] ]
; CHECK-NEXT: [[IDX:%.*]] = add i64 [[J]], [[K]]
; CHECK-NEXT: [[PTR:%.*]] = getelementptr inbounds i32, ptr [[ARR]], i64 [[IDX]]
; CHECK-NEXT: store i32 1, ptr [[PTR]], align 4
; CHECK-NEXT: [[K_NEXT]] = add i64 [[K]], 1
; CHECK-NEXT: [[INNER_COND:%.*]] = icmp eq i64 [[K_NEXT]], [[N]]
; CHECK-NEXT: br i1 [[INNER_COND]], label %[[OUTER_LATCH]], label %[[INNER]]
; CHECK: [[OUTER_LATCH]]:
; CHECK-NEXT: call void @llvm.lifetime.end.p0(ptr [[A]])
; CHECK-NEXT: [[J_NEXT]] = add i64 [[J]], 1
; CHECK-NEXT: [[OUTER_COND:%.*]] = icmp eq i64 [[J_NEXT]], [[N]]
; CHECK-NEXT: br i1 [[OUTER_COND]], label %[[EXIT]], label %[[OUTER_HEADER]], !llvm.loop [[LOOP8:![0-9]+]]
; CHECK: [[EXIT]]:
; CHECK-NEXT: ret void
;
entry:
%a = alloca i32
br label %outer.header
outer.header:
%j = phi i64 [ 0, %entry ], [ %j.next, %outer.latch ]
call void @llvm.lifetime.start.p0(i64 4, ptr %a)
br label %inner
inner:
%k = phi i64 [ 0, %outer.header ], [ %k.next, %inner ]
%idx = add i64 %j, %k
%ptr = getelementptr inbounds i32, ptr %arr, i64 %idx
store i32 1, ptr %ptr, align 4
%k.next = add i64 %k, 1
%inner.cond = icmp eq i64 %k.next, %n
br i1 %inner.cond, label %outer.latch, label %inner
outer.latch:
call void @llvm.lifetime.end.p0(i64 4, ptr %a)
%j.next = add i64 %j, 1
%outer.cond = icmp eq i64 %j.next, %n
br i1 %outer.cond, label %exit, label %outer.header, !llvm.loop !0
exit:
ret void
}
define void @test_sideeffect(ptr %arr, i64 %n) {
; CHECK-LABEL: define void @test_sideeffect(
; CHECK-SAME: ptr [[ARR:%.*]], i64 [[N:%.*]]) {
; CHECK-NEXT: [[ENTRY:.*]]:
; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[N]], 2
; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]
; CHECK: [[VECTOR_PH]]:
; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[N]], 2
; CHECK-NEXT: [[N_VEC:%.*]] = sub i64 [[N]], [[N_MOD_VF]]
; CHECK-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <2 x i64> poison, i64 [[N]], i64 0
; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <2 x i64> [[BROADCAST_SPLATINSERT]], <2 x i64> poison, <2 x i32> zeroinitializer
; CHECK-NEXT: br label %[[VECTOR_BODY:.*]]
; CHECK: [[VECTOR_BODY]]:
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_LATCH:.*]] ]
; CHECK-NEXT: [[VEC_IND:%.*]] = phi <2 x i64> [ <i64 0, i64 1>, %[[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], %[[VECTOR_LATCH]] ]
; CHECK-NEXT: call void @llvm.sideeffect()
; CHECK-NEXT: br label %[[INNER1:.*]]
; CHECK: [[INNER1]]:
; CHECK-NEXT: [[TMP0:%.*]] = phi <2 x i64> [ zeroinitializer, %[[VECTOR_BODY]] ], [ [[TMP3:%.*]], %[[INNER1]] ]
; CHECK-NEXT: [[TMP1:%.*]] = add <2 x i64> [[VEC_IND]], [[TMP0]]
; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds i32, ptr [[ARR]], <2 x i64> [[TMP1]]
; CHECK-NEXT: call void @llvm.masked.scatter.v2i32.v2p0(<2 x i32> splat (i32 1), <2 x ptr> align 4 [[TMP2]], <2 x i1> splat (i1 true))
; CHECK-NEXT: [[TMP3]] = add <2 x i64> [[TMP0]], splat (i64 1)
; CHECK-NEXT: [[TMP4:%.*]] = icmp eq <2 x i64> [[TMP3]], [[BROADCAST_SPLAT]]
; CHECK-NEXT: [[TMP5:%.*]] = extractelement <2 x i1> [[TMP4]], i32 0
; CHECK-NEXT: br i1 [[TMP5]], label %[[VECTOR_LATCH]], label %[[INNER1]]
; CHECK: [[VECTOR_LATCH]]:
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 2
; CHECK-NEXT: [[VEC_IND_NEXT]] = add <2 x i64> [[VEC_IND]], splat (i64 2)
; CHECK-NEXT: [[TMP6:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT: br i1 [[TMP6]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP9:![0-9]+]]
; CHECK: [[MIDDLE_BLOCK]]:
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[N]], [[N_VEC]]
; CHECK-NEXT: br i1 [[CMP_N]], label %[[EXIT:.*]], label %[[SCALAR_PH]]
; CHECK: [[SCALAR_PH]]:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], %[[MIDDLE_BLOCK]] ], [ 0, %[[ENTRY]] ]
; CHECK-NEXT: br label %[[OUTER_HEADER:.*]]
; CHECK: [[OUTER_HEADER]]:
; CHECK-NEXT: [[J:%.*]] = phi i64 [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ], [ [[J_NEXT:%.*]], %[[OUTER_LATCH:.*]] ]
; CHECK-NEXT: call void @llvm.sideeffect()
; CHECK-NEXT: br label %[[INNER:.*]]
; CHECK: [[INNER]]:
; CHECK-NEXT: [[K:%.*]] = phi i64 [ 0, %[[OUTER_HEADER]] ], [ [[K_NEXT:%.*]], %[[INNER]] ]
; CHECK-NEXT: [[IDX:%.*]] = add i64 [[J]], [[K]]
; CHECK-NEXT: [[PTR:%.*]] = getelementptr inbounds i32, ptr [[ARR]], i64 [[IDX]]
; CHECK-NEXT: store i32 1, ptr [[PTR]], align 4
; CHECK-NEXT: [[K_NEXT]] = add i64 [[K]], 1
; CHECK-NEXT: [[INNER_COND:%.*]] = icmp eq i64 [[K_NEXT]], [[N]]
; CHECK-NEXT: br i1 [[INNER_COND]], label %[[OUTER_LATCH]], label %[[INNER]]
; CHECK: [[OUTER_LATCH]]:
; CHECK-NEXT: [[J_NEXT]] = add i64 [[J]], 1
; CHECK-NEXT: [[OUTER_COND:%.*]] = icmp eq i64 [[J_NEXT]], [[N]]
; CHECK-NEXT: br i1 [[OUTER_COND]], label %[[EXIT]], label %[[OUTER_HEADER]], !llvm.loop [[LOOP10:![0-9]+]]
; CHECK: [[EXIT]]:
; CHECK-NEXT: ret void
;
entry:
br label %outer.header
outer.header:
%j = phi i64 [ 0, %entry ], [ %j.next, %outer.latch ]
call void @llvm.sideeffect()
br label %inner
inner:
%k = phi i64 [ 0, %outer.header ], [ %k.next, %inner ]
%idx = add i64 %j, %k
%ptr = getelementptr inbounds i32, ptr %arr, i64 %idx
store i32 1, ptr %ptr, align 4
%k.next = add i64 %k, 1
%inner.cond = icmp eq i64 %k.next, %n
br i1 %inner.cond, label %outer.latch, label %inner
outer.latch:
%j.next = add i64 %j, 1
%outer.cond = icmp eq i64 %j.next, %n
br i1 %outer.cond, label %exit, label %outer.header, !llvm.loop !0
exit:
ret void
}
; Check that llvm.pseudoprobe is replicated once per lane for accurate sample trip count.
define void @test_pseudoprobe(ptr %arr, i64 %n) {
; CHECK-LABEL: define void @test_pseudoprobe(
; CHECK-SAME: ptr [[ARR:%.*]], i64 [[N:%.*]]) {
; CHECK-NEXT: [[ENTRY:.*]]:
; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[N]], 2
; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]
; CHECK: [[VECTOR_PH]]:
; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[N]], 2
; CHECK-NEXT: [[N_VEC:%.*]] = sub i64 [[N]], [[N_MOD_VF]]
; CHECK-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <2 x i64> poison, i64 [[N]], i64 0
; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <2 x i64> [[BROADCAST_SPLATINSERT]], <2 x i64> poison, <2 x i32> zeroinitializer
; CHECK-NEXT: br label %[[VECTOR_BODY:.*]]
; CHECK: [[VECTOR_BODY]]:
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_LATCH:.*]] ]
; CHECK-NEXT: [[VEC_IND:%.*]] = phi <2 x i64> [ <i64 0, i64 1>, %[[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], %[[VECTOR_LATCH]] ]
; CHECK-NEXT: call void @llvm.pseudoprobe(i64 6699318081062747564, i64 1, i32 0, i64 -1)
; CHECK-NEXT: call void @llvm.pseudoprobe(i64 6699318081062747564, i64 1, i32 0, i64 -1)
; CHECK-NEXT: br label %[[INNER1:.*]]
; CHECK: [[INNER1]]:
; CHECK-NEXT: [[TMP0:%.*]] = phi <2 x i64> [ zeroinitializer, %[[VECTOR_BODY]] ], [ [[TMP3:%.*]], %[[INNER1]] ]
; CHECK-NEXT: [[TMP1:%.*]] = add <2 x i64> [[VEC_IND]], [[TMP0]]
; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds i32, ptr [[ARR]], <2 x i64> [[TMP1]]
; CHECK-NEXT: call void @llvm.masked.scatter.v2i32.v2p0(<2 x i32> splat (i32 1), <2 x ptr> align 4 [[TMP2]], <2 x i1> splat (i1 true))
; CHECK-NEXT: [[TMP3]] = add <2 x i64> [[TMP0]], splat (i64 1)
; CHECK-NEXT: [[TMP4:%.*]] = icmp eq <2 x i64> [[TMP3]], [[BROADCAST_SPLAT]]
; CHECK-NEXT: [[TMP5:%.*]] = extractelement <2 x i1> [[TMP4]], i32 0
; CHECK-NEXT: br i1 [[TMP5]], label %[[VECTOR_LATCH]], label %[[INNER1]]
; CHECK: [[VECTOR_LATCH]]:
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 2
; CHECK-NEXT: [[VEC_IND_NEXT]] = add <2 x i64> [[VEC_IND]], splat (i64 2)
; CHECK-NEXT: [[TMP6:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT: br i1 [[TMP6]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP11:![0-9]+]]
; CHECK: [[MIDDLE_BLOCK]]:
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[N]], [[N_VEC]]
; CHECK-NEXT: br i1 [[CMP_N]], label %[[EXIT:.*]], label %[[SCALAR_PH]]
; CHECK: [[SCALAR_PH]]:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], %[[MIDDLE_BLOCK]] ], [ 0, %[[ENTRY]] ]
; CHECK-NEXT: br label %[[OUTER_HEADER:.*]]
; CHECK: [[OUTER_HEADER]]:
; CHECK-NEXT: [[J:%.*]] = phi i64 [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ], [ [[J_NEXT:%.*]], %[[OUTER_LATCH:.*]] ]
; CHECK-NEXT: call void @llvm.pseudoprobe(i64 6699318081062747564, i64 1, i32 0, i64 -1)
; CHECK-NEXT: br label %[[INNER:.*]]
; CHECK: [[INNER]]:
; CHECK-NEXT: [[K:%.*]] = phi i64 [ 0, %[[OUTER_HEADER]] ], [ [[K_NEXT:%.*]], %[[INNER]] ]
; CHECK-NEXT: [[IDX:%.*]] = add i64 [[J]], [[K]]
; CHECK-NEXT: [[PTR:%.*]] = getelementptr inbounds i32, ptr [[ARR]], i64 [[IDX]]
; CHECK-NEXT: store i32 1, ptr [[PTR]], align 4
; CHECK-NEXT: [[K_NEXT]] = add i64 [[K]], 1
; CHECK-NEXT: [[INNER_COND:%.*]] = icmp eq i64 [[K_NEXT]], [[N]]
; CHECK-NEXT: br i1 [[INNER_COND]], label %[[OUTER_LATCH]], label %[[INNER]]
; CHECK: [[OUTER_LATCH]]:
; CHECK-NEXT: [[J_NEXT]] = add i64 [[J]], 1
; CHECK-NEXT: [[OUTER_COND:%.*]] = icmp eq i64 [[J_NEXT]], [[N]]
; CHECK-NEXT: br i1 [[OUTER_COND]], label %[[EXIT]], label %[[OUTER_HEADER]], !llvm.loop [[LOOP12:![0-9]+]]
; CHECK: [[EXIT]]:
; CHECK-NEXT: ret void
;
entry:
br label %outer.header
outer.header:
%j = phi i64 [ 0, %entry ], [ %j.next, %outer.latch ]
call void @llvm.pseudoprobe(i64 6699318081062747564, i64 1, i32 0, i64 -1)
br label %inner
inner:
%k = phi i64 [ 0, %outer.header ], [ %k.next, %inner ]
%idx = add i64 %j, %k
%ptr = getelementptr inbounds i32, ptr %arr, i64 %idx
store i32 1, ptr %ptr, align 4
%k.next = add i64 %k, 1
%inner.cond = icmp eq i64 %k.next, %n
br i1 %inner.cond, label %outer.latch, label %inner
outer.latch:
%j.next = add i64 %j, 1
%outer.cond = icmp eq i64 %j.next, %n
br i1 %outer.cond, label %exit, label %outer.header, !llvm.loop !0
exit:
ret void
}
declare void @llvm.assume(i1)
declare void @llvm.lifetime.start.p0(i64, ptr)
declare void @llvm.lifetime.end.p0(i64, ptr)
declare void @llvm.sideeffect()
declare void @llvm.pseudoprobe(i64, i64, i32, i64)
!0 = distinct !{!0, !1, !2}
!1 = !{!"llvm.loop.mustprogress"}
!2 = !{!"llvm.loop.vectorize.enable", i1 true}
;.
; CHECK: [[LOOP0]] = distinct !{[[LOOP0]], [[META1:![0-9]+]], [[META2:![0-9]+]], [[META3:![0-9]+]]}
; CHECK: [[META1]] = !{!"llvm.loop.mustprogress"}
; CHECK: [[META2]] = !{!"llvm.loop.isvectorized", i32 1}
; CHECK: [[META3]] = !{!"llvm.loop.unroll.runtime.disable"}
; CHECK: [[LOOP4]] = distinct !{[[LOOP4]], [[META1]], [[META3]], [[META2]]}
; CHECK: [[LOOP5]] = distinct !{[[LOOP5]], [[META1]], [[META2]], [[META3]]}
; CHECK: [[LOOP6]] = distinct !{[[LOOP6]], [[META1]], [[META3]], [[META2]]}
; CHECK: [[LOOP7]] = distinct !{[[LOOP7]], [[META1]], [[META2]], [[META3]]}
; CHECK: [[LOOP8]] = distinct !{[[LOOP8]], [[META1]], [[META3]], [[META2]]}
; CHECK: [[LOOP9]] = distinct !{[[LOOP9]], [[META1]], [[META2]], [[META3]]}
; CHECK: [[LOOP10]] = distinct !{[[LOOP10]], [[META1]], [[META3]], [[META2]]}
; CHECK: [[LOOP11]] = distinct !{[[LOOP11]], [[META1]], [[META2]], [[META3]]}
; CHECK: [[LOOP12]] = distinct !{[[LOOP12]], [[META1]], [[META3]], [[META2]]}
;.
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