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clang-p2996/llvm/test/Transforms/SLPVectorizer/X86/reorder-phi-operand.ll
Valery N Dmitriev fd7273359a [SLP] Do not ignore ordering for root node when it has in-tree uses. 
When rooted with PHIs, a vectorization tree may have another node with PHIs
which have roots as their operands. We cannot ignore ordering information
for root in such a case.

Differential Revision: https://reviews.llvm.org/D141309
2023-01-10 10:12:51 -08:00

181 lines
8.4 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -passes=slp-vectorizer -mtriple=x86_64-unknown-linux-gnu < %s | FileCheck %s
define ptr @test() {
; CHECK-LABEL: @test(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[GREEN_I:%.*]] = getelementptr inbounds float, ptr null, i32 6
; CHECK-NEXT: [[TMP0:%.*]] = load <2 x float>, ptr [[GREEN_I]], align 4
; CHECK-NEXT: [[TMP1:%.*]] = fpext <2 x float> [[TMP0]] to <2 x double>
; CHECK-NEXT: br label [[BODY:%.*]]
; CHECK: body:
; CHECK-NEXT: [[TMP2:%.*]] = phi <2 x double> [ [[TMP5:%.*]], [[BODY]] ], [ [[TMP1]], [[ENTRY:%.*]] ]
; CHECK-NEXT: [[TMP3:%.*]] = load <2 x i16>, ptr null, align 2
; CHECK-NEXT: [[TMP4:%.*]] = uitofp <2 x i16> [[TMP3]] to <2 x double>
; CHECK-NEXT: [[SHUFFLE:%.*]] = shufflevector <2 x double> [[TMP4]], <2 x double> poison, <2 x i32> <i32 1, i32 0>
; CHECK-NEXT: [[TMP5]] = call <2 x double> @llvm.fmuladd.v2f64(<2 x double> zeroinitializer, <2 x double> [[SHUFFLE]], <2 x double> [[TMP2]])
; CHECK-NEXT: br label [[BODY]]
;
entry:
%green.i = getelementptr inbounds float, ptr null, i32 6
%blue.i = getelementptr inbounds float, ptr null, i32 7
%0 = load float, ptr %green.i, align 4
%conv197 = fpext float %0 to double
%1 = load float, ptr %blue.i, align 8
%conv199 = fpext float %1 to double
br label %body
body:
%phi1 = phi double [ %3, %body ], [ %conv197, %entry ]
%phi2 = phi double [ %5, %body ], [ %conv199, %entry ]
%green = getelementptr inbounds i16, ptr null, i32 1
%2 = load i16, ptr %green, align 2
%conv1 = uitofp i16 %2 to double
%3 = call double @llvm.fmuladd.f64(double 0.000000e+00, double %conv1, double %phi1)
%4 = load i16, ptr null, align 2
%conv2 = uitofp i16 %4 to double
%5 = call double @llvm.fmuladd.f64(double 0.000000e+00, double %conv2, double %phi2)
br label %body
}
declare double @llvm.fmuladd.f64(double, double, double)
define void @test1(ptr %agg.result, ptr %this) {
; CHECK-LABEL: @test1(
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 false, label [[RETURN:%.*]], label [[LOR_LHS_FALSE:%.*]]
; CHECK: lor.lhs.false:
; CHECK-NEXT: br i1 false, label [[RETURN]], label [[IF_END:%.*]]
; CHECK: if.end:
; CHECK-NEXT: [[B_I:%.*]] = getelementptr inbounds float, ptr [[THIS:%.*]], i32 1
; CHECK-NEXT: [[TMP0:%.*]] = load <2 x float>, ptr [[B_I]], align 4
; CHECK-NEXT: [[TMP1:%.*]] = fadd <2 x float> [[TMP0]], zeroinitializer
; CHECK-NEXT: br label [[RETURN]]
; CHECK: return:
; CHECK-NEXT: [[TMP2:%.*]] = phi <2 x float> [ [[TMP1]], [[IF_END]] ], [ <float 1.000000e+00, float 0.000000e+00>, [[LOR_LHS_FALSE]] ], [ <float 1.000000e+00, float 0.000000e+00>, [[ENTRY:%.*]] ]
; CHECK-NEXT: [[C_I_I_I:%.*]] = getelementptr inbounds float, ptr [[AGG_RESULT:%.*]], i32 2
; CHECK-NEXT: [[SHUFFLE:%.*]] = shufflevector <2 x float> [[TMP2]], <2 x float> poison, <2 x i32> <i32 1, i32 0>
; CHECK-NEXT: store <2 x float> [[SHUFFLE]], ptr [[C_I_I_I]], align 4
; CHECK-NEXT: ret void
;
entry:
br i1 false, label %return, label %lor.lhs.false
lor.lhs.false:
br i1 false, label %return, label %if.end
if.end:
%c.i = getelementptr inbounds float, ptr %this, i32 2
%0 = load float, ptr %c.i, align 4
%add.i = fadd float %0, 0.000000e+00
%b.i = getelementptr inbounds float, ptr %this, i32 1
%1 = load float, ptr %b.i, align 4
%add2.i = fadd float %1, 0.000000e+00
br label %return
return:
%add.i.sink = phi float [ %add.i, %if.end ], [ 0.000000e+00, %lor.lhs.false ], [ 0.000000e+00, %entry ]
%add2.i.sink = phi float [ %add2.i, %if.end ], [ 1.000000e+00, %lor.lhs.false ], [ 1.000000e+00, %entry ]
%c.i.i.i = getelementptr inbounds float, ptr %agg.result, i32 2
store float %add.i.sink, ptr %c.i.i.i, align 4
%d.i.i.i = getelementptr inbounds float, ptr %agg.result, i32 3
store float %add2.i.sink, ptr %d.i.i.i, align 4
ret void
}
; Here PHIs have mutual uses of each other. Reordering one requires reordering the other.
define void @test2(ptr %p1, ptr %p2) {
; CHECK-LABEL: @test2(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[A1:%.*]] = getelementptr inbounds ptr, ptr [[P1:%.*]], i32 0
; CHECK-NEXT: [[B1:%.*]] = getelementptr inbounds ptr, ptr [[P1]], i32 4
; CHECK-NEXT: [[TMP0:%.*]] = load <2 x double>, ptr [[A1]], align 8
; CHECK-NEXT: [[TMP1:%.*]] = load <2 x double>, ptr [[B1]], align 8
; CHECK-NEXT: [[TMP2:%.*]] = fmul fast <2 x double> <double 1.000000e+01, double 1.000000e-01>, [[TMP0]]
; CHECK-NEXT: [[TMP3:%.*]] = fmul fast <2 x double> <double 1.100000e+01, double 1.100000e+00>, [[TMP1]]
; CHECK-NEXT: [[TMP4:%.*]] = fsub fast <2 x double> <double 1.000000e+01, double 1.000000e-01>, [[TMP3]]
; CHECK-NEXT: [[TMP5:%.*]] = fmul fast <2 x double> [[TMP4]], <double 2.000000e+00, double 2.100000e+00>
; CHECK-NEXT: [[TMP6:%.*]] = fadd fast <2 x double> [[TMP2]], <double 1.000000e+01, double 1.000000e-01>
; CHECK-NEXT: [[TMP7:%.*]] = fadd fast <2 x double> [[TMP6]], [[TMP5]]
; CHECK-NEXT: [[TMP8:%.*]] = fmul fast <2 x double> [[TMP7]], <double 3.000000e+00, double 3.100000e+00>
; CHECK-NEXT: br label [[BB1:%.*]]
; CHECK: bb1:
; CHECK-NEXT: [[TMP9:%.*]] = fadd fast <2 x double> <double 4.000000e+00, double 4.100000e+00>, [[TMP8]]
; CHECK-NEXT: [[TMP10:%.*]] = fadd fast <2 x double> [[TMP9]], <double 2.000000e+00, double 2.100000e+00>
; CHECK-NEXT: [[TMP11:%.*]] = fadd fast <2 x double> [[TMP10]], <double 3.000000e+00, double 3.100000e+00>
; CHECK-NEXT: br label [[BB2:%.*]]
; CHECK: bb2:
; CHECK-NEXT: [[TMP12:%.*]] = phi <2 x double> [ [[TMP11]], [[BB1]] ], [ [[TMP16:%.*]], [[BB6:%.*]] ]
; CHECK-NEXT: [[TMP13:%.*]] = shufflevector <2 x double> [[TMP12]], <2 x double> poison, <2 x i32> <i32 1, i32 0>
; CHECK-NEXT: [[X0:%.*]] = getelementptr inbounds double, ptr [[P2:%.*]], i32 0
; CHECK-NEXT: [[TMP14:%.*]] = load <2 x double>, ptr [[X0]], align 8
; CHECK-NEXT: br i1 poison, label [[BB3:%.*]], label [[BB6]]
; CHECK: bb3:
; CHECK-NEXT: br i1 poison, label [[BB5:%.*]], label [[BB4:%.*]]
; CHECK: bb4:
; CHECK-NEXT: br label [[BB6]]
; CHECK: bb5:
; CHECK-NEXT: br label [[BB6]]
; CHECK: bb6:
; CHECK-NEXT: [[TMP15:%.*]] = phi <2 x double> [ [[TMP13]], [[BB2]] ], [ [[TMP14]], [[BB4]] ], [ [[TMP14]], [[BB5]] ]
; CHECK-NEXT: [[TMP16]] = shufflevector <2 x double> [[TMP15]], <2 x double> poison, <2 x i32> <i32 1, i32 0>
; CHECK-NEXT: br label [[BB2]]
;
entry:
%a1 = getelementptr inbounds ptr, ptr %p1, i32 0
%a2 = getelementptr inbounds ptr, ptr %p1, i32 1
%b2 = getelementptr inbounds ptr, ptr %p1, i32 5
%lda1 = load double, ptr %a1, align 8
%lda2 = load double, ptr %a2, align 8
%b1 = getelementptr inbounds ptr, ptr %p1, i32 4
%ldb1 = load double, ptr %b1, align 8
%ldb2 = load double, ptr %b2, align 8
%mul0.1 = fmul fast double 0.1, %lda2
%mul1.1 = fmul fast double 1.1, %ldb2
%sub0.1 = fsub fast double 0.1, %mul1.1
%mul2.1 = fmul fast double %sub0.1, 2.1
%add0.1 = fadd fast double %mul0.1, 0.1
%add1.1 = fadd fast double %add0.1, %mul2.1
%mul3.1 = fmul fast double %add1.1, 3.1
%mul0.0 = fmul fast double 10.0, %lda1
%mul1.0 = fmul fast double 11.0, %ldb1
%sub0.0 = fsub fast double 10.0, %mul1.0
%mul2.0 = fmul fast double %sub0.0, 2.0
%add0.0 = fadd fast double %mul0.0, 10.0
%add1.0 = fadd fast double %add0.0, %mul2.0
%mul3.0 = fmul fast double 3.0, %add1.0
br label %bb1
bb1:
%add4.1 = fadd fast double 4.1, %mul3.1
%add2.1 = fadd fast double %add4.1, 2.1
%add3.1 = fadd fast double %add2.1, 3.1
%add4.0 = fadd fast double 4.0, %mul3.0
%add2.0 = fadd fast double %add4.0, 2.0
%add3.0 = fadd fast double %add2.0, 3.0
br label %bb2
bb2: ; preds = %bb6, %bb1
%phi0.0 = phi double [ %add3.1, %bb1 ], [ %phi1.0, %bb6 ]
%phi0.1 = phi double [ %add3.0, %bb1 ], [ %phi1.1, %bb6 ]
%x0 = getelementptr inbounds double, ptr %p2, i32 0
%i0 = load double, ptr %x0, align 8
%x1 = getelementptr inbounds double, ptr %p2, i32 1
%i1 = load double, ptr %x1, align 8
br i1 poison, label %bb3, label %bb6
bb3: ; preds = %bb2
br i1 poison, label %bb5, label %bb4
bb4: ; preds = %bb3
br label %bb6
bb5: ; preds = %bb3
br label %bb6
bb6: ; preds = %bb5, %bb4, %bb3
%phi1.0 = phi double [ %phi0.0, %bb2 ], [ %i0, %bb4 ], [ %i0, %bb5 ]
%phi1.1 = phi double [ %phi0.1, %bb2 ], [ %i1, %bb4 ], [ %i1, %bb5 ]
br label %bb2
}
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