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llvm-project/llvm/test/Transforms/SLPVectorizer/X86/split-node-throttled.ll
Alexey Bataev c322a0c462 [SLP]Do not throttle nodes with split parents, if any of scalars is used in more than one split nodes 
If the the node to throttle is a vector node, which is used in split
node, and at least one scalar of such a node is used in many split
nodes, such vector node should be throttled. otherise there might be
wrong def-use chain, which crashes the compiler.

Fixes #175967
2026-01-15 03:50:45 -08:00

148 lines
7.3 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 6
; RUN: opt -S --passes=slp-vectorizer -mtriple=x86_64-grtev4-linux-gnu -mcpu=haswell < %s | FileCheck %s
define fastcc void @test(i32 %arg) {
; CHECK-LABEL: define fastcc void @test(
; CHECK-SAME: i32 [[ARG:%.*]]) #[[ATTR0:[0-9]+]] {
; CHECK-NEXT: [[BB:.*:]]
; CHECK-NEXT: [[SELECT:%.*]] = select i1 false, i32 0, i32 0
; CHECK-NEXT: [[GETELEMENTPTR:%.*]] = getelementptr i8, ptr poison, i64 16
; CHECK-NEXT: [[TMP3:%.*]] = insertelement <2 x i32> poison, i32 [[ARG]], i32 1
; CHECK-NEXT: [[TMP0:%.*]] = insertelement <2 x i32> [[TMP3]], i32 [[SELECT]], i32 0
; CHECK-NEXT: [[TMP1:%.*]] = zext <2 x i32> [[TMP0]] to <2 x i64>
; CHECK-NEXT: [[TMP2:%.*]] = shufflevector <2 x i64> [[TMP1]], <2 x i64> poison, <4 x i32> <i32 0, i32 1, i32 0, i32 1>
; CHECK-NEXT: [[TMP6:%.*]] = shufflevector <4 x i64> [[TMP2]], <4 x i64> poison, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 poison, i32 poison, i32 poison, i32 poison>
; CHECK-NEXT: [[TMP7:%.*]] = shufflevector <8 x i64> [[TMP6]], <8 x i64> <i64 0, i64 0, i64 0, i64 0, i64 undef, i64 undef, i64 undef, i64 undef>, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 8, i32 9, i32 10, i32 11>
; CHECK-NEXT: [[TMP24:%.*]] = shufflevector <2 x i32> [[TMP0]], <2 x i32> <i32 0, i32 poison>, <2 x i32> <i32 2, i32 0>
; CHECK-NEXT: [[TMP25:%.*]] = zext <2 x i32> [[TMP24]] to <2 x i64>
; CHECK-NEXT: [[TMP26:%.*]] = shufflevector <2 x i64> [[TMP25]], <2 x i64> poison, <4 x i32> <i32 0, i32 1, i32 0, i32 1>
; CHECK-NEXT: [[TMP8:%.*]] = shufflevector <4 x i64> [[TMP26]], <4 x i64> poison, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 poison, i32 poison, i32 poison, i32 poison>
; CHECK-NEXT: [[TMP9:%.*]] = shufflevector <8 x i64> [[TMP8]], <8 x i64> <i64 0, i64 0, i64 0, i64 0, i64 undef, i64 undef, i64 undef, i64 undef>, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 8, i32 9, i32 10, i32 11>
; CHECK-NEXT: [[TMP10:%.*]] = mul <8 x i64> zeroinitializer, [[TMP7]]
; CHECK-NEXT: [[TMP11:%.*]] = trunc <8 x i64> [[TMP10]] to <8 x i1>
; CHECK-NEXT: [[TMP12:%.*]] = or <8 x i1> zeroinitializer, [[TMP11]]
; CHECK-NEXT: [[TMP13:%.*]] = or <8 x i1> [[TMP12]], zeroinitializer
; CHECK-NEXT: [[TMP14:%.*]] = shufflevector <8 x i1> [[TMP13]], <8 x i1> poison, <8 x i32> <i32 0, i32 4, i32 2, i32 6, i32 1, i32 5, i32 3, i32 7>
; CHECK-NEXT: [[TMP15:%.*]] = mul <8 x i64> zeroinitializer, [[TMP9]]
; CHECK-NEXT: [[TMP16:%.*]] = trunc <8 x i64> [[TMP15]] to <8 x i1>
; CHECK-NEXT: [[TMP17:%.*]] = or <8 x i1> [[TMP14]], [[TMP16]]
; CHECK-NEXT: [[TMP18:%.*]] = lshr <8 x i1> [[TMP17]], zeroinitializer
; CHECK-NEXT: [[TMP19:%.*]] = zext <8 x i1> [[TMP18]] to <8 x i32>
; CHECK-NEXT: [[TMP20:%.*]] = call <8 x i32> @llvm.smax.v8i32(<8 x i32> [[TMP19]], <8 x i32> zeroinitializer)
; CHECK-NEXT: [[TMP21:%.*]] = call <8 x i32> @llvm.smin.v8i32(<8 x i32> [[TMP20]], <8 x i32> zeroinitializer)
; CHECK-NEXT: [[TMP22:%.*]] = trunc <8 x i32> [[TMP21]] to <8 x i16>
; CHECK-NEXT: [[TMP23:%.*]] = shufflevector <8 x i16> [[TMP22]], <8 x i16> poison, <8 x i32> <i32 0, i32 4, i32 1, i32 5, i32 2, i32 6, i32 3, i32 7>
; CHECK-NEXT: store <8 x i16> [[TMP23]], ptr [[GETELEMENTPTR]], align 2
; CHECK-NEXT: ret void
;
bb:
%zext = zext i32 %arg to i64
%sext = sext i32 0 to i64
%select = select i1 false, i32 0, i32 0
%zext1 = zext i32 %select to i64
%mul = mul i64 0, %zext1
%or = or i64 0, %mul
%or2 = or i64 %or, 0
%zext3 = zext i32 0 to i64
%mul4 = mul i64 0, %zext3
%or5 = or i64 %or2, %mul4
%lshr = lshr i64 %or5, 0
%trunc = trunc i64 %lshr to i32
%call = tail call i32 @llvm.smax.i32(i32 %trunc, i32 0)
%call6 = tail call i32 @llvm.smin.i32(i32 %call, i32 0)
%trunc7 = trunc i32 %call6 to i16
%getelementptr = getelementptr i8, ptr poison, i64 16
store i16 %trunc7, ptr %getelementptr, align 2
%mul8 = mul i64 0, %zext
%or9 = or i64 0, %mul8
%or10 = or i64 %or9, 0
%sext11 = sext i32 0 to i64
%mul12 = mul i64 0, %sext11
%or13 = or i64 %or10, %mul12
%lshr14 = lshr i64 %or13, 0
%trunc15 = trunc i64 %lshr14 to i32
%call16 = tail call i32 @llvm.smax.i32(i32 %trunc15, i32 0)
%call17 = tail call i32 @llvm.smin.i32(i32 %call16, i32 0)
%trunc18 = trunc i32 %call17 to i16
%getelementptr19 = getelementptr i8, ptr poison, i64 18
store i16 %trunc18, ptr %getelementptr19, align 2
%sext20 = sext i32 0 to i64
%mul21 = mul i64 0, %sext20
%or22 = or i64 %zext3, %mul21
%or23 = or i64 %or22, 0
%mul24 = mul i64 0, %zext1
%or25 = or i64 %or23, %mul24
%lshr26 = lshr i64 %or25, 0
%trunc27 = trunc i64 %lshr26 to i32
%call28 = tail call i32 @llvm.smax.i32(i32 %trunc27, i32 0)
%call29 = tail call i32 @llvm.smin.i32(i32 %call28, i32 0)
%trunc30 = trunc i32 %call29 to i16
%getelementptr31 = getelementptr i8, ptr poison, i64 20
store i16 %trunc30, ptr %getelementptr31, align 2
%sext32 = sext i32 0 to i64
%mul33 = mul i64 0, %sext32
%or34 = or i64 0, %mul33
%or35 = or i64 %or34, 0
%mul36 = mul i64 0, %sext
%or37 = or i64 %or35, %mul36
%lshr38 = lshr i64 %or37, 0
%trunc39 = trunc i64 %lshr38 to i32
%call40 = tail call i32 @llvm.smax.i32(i32 %trunc39, i32 0)
%call41 = tail call i32 @llvm.smin.i32(i32 %call40, i32 0)
%trunc42 = trunc i32 %call41 to i16
%getelementptr43 = getelementptr i8, ptr poison, i64 22
store i16 %trunc42, ptr %getelementptr43, align 2
%mul44 = mul i64 0, %zext1
%or45 = or i64 0, %mul44
%or46 = or i64 %or45, 0
%mul47 = mul i64 0, %zext3
%or48 = or i64 %or46, %mul47
%lshr49 = lshr i64 %or48, 0
%trunc50 = trunc i64 %lshr49 to i32
%call51 = tail call i32 @llvm.smax.i32(i32 %trunc50, i32 0)
%call52 = tail call i32 @llvm.smin.i32(i32 %call51, i32 0)
%trunc53 = trunc i32 %call52 to i16
%getelementptr54 = getelementptr i8, ptr poison, i64 24
store i16 %trunc53, ptr %getelementptr54, align 2
%mul55 = mul i64 0, %zext
%or56 = or i64 0, %mul55
%or57 = or i64 %or56, 0
%mul58 = mul i64 0, %sext11
%or59 = or i64 %or57, %mul58
%lshr60 = lshr i64 %or59, 0
%trunc61 = trunc i64 %lshr60 to i32
%call62 = tail call i32 @llvm.smax.i32(i32 %trunc61, i32 0)
%call63 = tail call i32 @llvm.smin.i32(i32 %call62, i32 0)
%trunc64 = trunc i32 %call63 to i16
%getelementptr65 = getelementptr i8, ptr poison, i64 26
store i16 %trunc64, ptr %getelementptr65, align 2
%mul66 = mul i64 0, %sext20
%or67 = or i64 0, %mul66
%or68 = or i64 %or67, 0
%mul69 = mul i64 0, %zext1
%or70 = or i64 %or68, %mul69
%lshr71 = lshr i64 %or70, 0
%trunc72 = trunc i64 %lshr71 to i32
%call73 = tail call i32 @llvm.smax.i32(i32 %trunc72, i32 0)
%call74 = tail call i32 @llvm.smin.i32(i32 %call73, i32 0)
%trunc75 = trunc i32 %call74 to i16
%getelementptr76 = getelementptr i8, ptr poison, i64 28
store i16 %trunc75, ptr %getelementptr76, align 2
%mul77 = mul i64 0, %sext32
%or78 = or i64 0, %mul77
%or79 = or i64 %or78, 0
%mul80 = mul i64 0, %sext
%or81 = or i64 %or79, %mul80
%lshr82 = lshr i64 %or81, 0
%trunc83 = trunc i64 %lshr82 to i32
%call84 = tail call i32 @llvm.smax.i32(i32 %trunc83, i32 0)
%call85 = tail call i32 @llvm.smin.i32(i32 %call84, i32 0)
%trunc86 = trunc i32 %call85 to i16
%getelementptr87 = getelementptr i8, ptr poison, i64 30
store i16 %trunc86, ptr %getelementptr87, align 2
ret void
}
declare i32 @llvm.smin.i32(i32, i32)
declare i32 @llvm.smax.i32(i32, i32)
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