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|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes=slp-vectorizer -mtriple=arm64-apple-ios -S %s | FileCheck %s
; Test case where not vectorizing is more profitable because multiple
; fmul/{fadd,fsub} pairs can be lowered to fma instructions.
define void @slp_not_profitable_with_fast_fmf(ptr %A, ptr %B) {
; CHECK-LABEL: @slp_not_profitable_with_fast_fmf(
; CHECK-NEXT: [[GEP_B_1:%.*]] = getelementptr inbounds float, ptr [[B:%.*]], i64 1
; CHECK-NEXT: [[A_0:%.*]] = load float, ptr [[A:%.*]], align 4
; CHECK-NEXT: [[B_1:%.*]] = load float, ptr [[GEP_B_1]], align 4
; CHECK-NEXT: [[MUL_0:%.*]] = fmul fast float [[B_1]], [[A_0]]
; CHECK-NEXT: [[B_0:%.*]] = load float, ptr [[B]], align 4
; CHECK-NEXT: [[GEP_B_2:%.*]] = getelementptr inbounds float, ptr [[B]], i64 2
; CHECK-NEXT: [[B_2:%.*]] = load float, ptr [[GEP_B_2]], align 4
; CHECK-NEXT: [[MUL_1:%.*]] = fmul fast float [[B_2]], [[B_0]]
; CHECK-NEXT: [[SUB:%.*]] = fsub fast float [[MUL_0]], [[MUL_1]]
; CHECK-NEXT: [[MUL_2:%.*]] = fmul fast float [[B_0]], [[B_1]]
; CHECK-NEXT: [[MUL_3:%.*]] = fmul fast float [[B_2]], [[A_0]]
; CHECK-NEXT: [[ADD:%.*]] = fadd fast float [[MUL_3]], [[MUL_2]]
; CHECK-NEXT: store float [[SUB]], ptr [[A]], align 4
; CHECK-NEXT: [[GEP_A_1:%.*]] = getelementptr inbounds float, ptr [[A]], i64 1
; CHECK-NEXT: store float [[ADD]], ptr [[GEP_A_1]], align 4
; CHECK-NEXT: store float [[B_2]], ptr [[B]], align 4
; CHECK-NEXT: ret void
;
%gep.B.1 = getelementptr inbounds float, ptr %B, i64 1
%A.0 = load float, ptr %A, align 4
%B.1 = load float, ptr %gep.B.1, align 4
%mul.0 = fmul fast float %B.1, %A.0
%B.0 = load float, ptr %B, align 4
%gep.B.2 = getelementptr inbounds float, ptr %B, i64 2
%B.2 = load float, ptr %gep.B.2, align 4
%mul.1 = fmul fast float %B.2, %B.0
%sub = fsub fast float %mul.0, %mul.1
%mul.2 = fmul fast float %B.0, %B.1
%mul.3 = fmul fast float %B.2, %A.0
%add = fadd fast float %mul.3, %mul.2
store float %sub, ptr %A, align 4
%gep.A.1 = getelementptr inbounds float, ptr %A, i64 1
store float %add, ptr %gep.A.1, align 4
store float %B.2, ptr %B, align 4
ret void
}
define void @slp_not_profitable_with_reassoc_fmf(ptr %A, ptr %B) {
; CHECK-LABEL: @slp_not_profitable_with_reassoc_fmf(
; CHECK-NEXT: [[GEP_B_1:%.*]] = getelementptr inbounds float, ptr [[B:%.*]], i64 1
; CHECK-NEXT: [[A_0:%.*]] = load float, ptr [[A:%.*]], align 4
; CHECK-NEXT: [[B_1:%.*]] = load float, ptr [[GEP_B_1]], align 4
; CHECK-NEXT: [[MUL_0:%.*]] = fmul reassoc float [[B_1]], [[A_0]]
; CHECK-NEXT: [[B_0:%.*]] = load float, ptr [[B]], align 4
; CHECK-NEXT: [[GEP_B_2:%.*]] = getelementptr inbounds float, ptr [[B]], i64 2
; CHECK-NEXT: [[B_2:%.*]] = load float, ptr [[GEP_B_2]], align 4
; CHECK-NEXT: [[MUL_1:%.*]] = fmul float [[B_2]], [[B_0]]
; CHECK-NEXT: [[SUB:%.*]] = fsub reassoc float [[MUL_0]], [[MUL_1]]
; CHECK-NEXT: [[MUL_2:%.*]] = fmul float [[B_0]], [[B_1]]
; CHECK-NEXT: [[MUL_3:%.*]] = fmul reassoc float [[B_2]], [[A_0]]
; CHECK-NEXT: [[ADD:%.*]] = fadd reassoc float [[MUL_3]], [[MUL_2]]
; CHECK-NEXT: store float [[SUB]], ptr [[A]], align 4
; CHECK-NEXT: [[GEP_A_1:%.*]] = getelementptr inbounds float, ptr [[A]], i64 1
; CHECK-NEXT: store float [[ADD]], ptr [[GEP_A_1]], align 4
; CHECK-NEXT: store float [[B_2]], ptr [[B]], align 4
; CHECK-NEXT: ret void
;
%gep.B.1 = getelementptr inbounds float, ptr %B, i64 1
%A.0 = load float, ptr %A, align 4
%B.1 = load float, ptr %gep.B.1, align 4
%mul.0 = fmul reassoc float %B.1, %A.0
%B.0 = load float, ptr %B, align 4
%gep.B.2 = getelementptr inbounds float, ptr %B, i64 2
%B.2 = load float, ptr %gep.B.2, align 4
%mul.1 = fmul float %B.2, %B.0
%sub = fsub reassoc float %mul.0, %mul.1
%mul.2 = fmul float %B.0, %B.1
%mul.3 = fmul reassoc float %B.2, %A.0
%add = fadd reassoc float %mul.3, %mul.2
store float %sub, ptr %A, align 4
%gep.A.1 = getelementptr inbounds float, ptr %A, i64 1
store float %add, ptr %gep.A.1, align 4
store float %B.2, ptr %B, align 4
ret void
}
; FMA cannot be used due to missing fast-math flags, so SLP should kick in.
define void @slp_profitable_missing_fmf_on_fadd_fsub(ptr %A, ptr %B) {
; CHECK-LABEL: @slp_profitable_missing_fmf_on_fadd_fsub(
; CHECK-NEXT: [[GEP_B_1:%.*]] = getelementptr inbounds float, ptr [[B:%.*]], i64 1
; CHECK-NEXT: [[A_0:%.*]] = load float, ptr [[A:%.*]], align 4
; CHECK-NEXT: [[B_1:%.*]] = load float, ptr [[GEP_B_1]], align 4
; CHECK-NEXT: [[MUL_0:%.*]] = fmul fast float [[B_1]], [[A_0]]
; CHECK-NEXT: [[B_0:%.*]] = load float, ptr [[B]], align 4
; CHECK-NEXT: [[GEP_B_2:%.*]] = getelementptr inbounds float, ptr [[B]], i64 2
; CHECK-NEXT: [[B_2:%.*]] = load float, ptr [[GEP_B_2]], align 4
; CHECK-NEXT: [[MUL_1:%.*]] = fmul fast float [[B_2]], [[B_0]]
; CHECK-NEXT: [[SUB:%.*]] = fsub float [[MUL_0]], [[MUL_1]]
; CHECK-NEXT: [[MUL_2:%.*]] = fmul fast float [[B_0]], [[B_1]]
; CHECK-NEXT: [[MUL_3:%.*]] = fmul fast float [[B_2]], [[A_0]]
; CHECK-NEXT: [[ADD:%.*]] = fadd float [[MUL_3]], [[MUL_2]]
; CHECK-NEXT: store float [[SUB]], ptr [[A]], align 4
; CHECK-NEXT: [[GEP_A_1:%.*]] = getelementptr inbounds float, ptr [[A]], i64 1
; CHECK-NEXT: store float [[ADD]], ptr [[GEP_A_1]], align 4
; CHECK-NEXT: store float [[B_2]], ptr [[B]], align 4
; CHECK-NEXT: ret void
;
%gep.B.1 = getelementptr inbounds float, ptr %B, i64 1
%A.0 = load float, ptr %A, align 4
%B.1 = load float, ptr %gep.B.1, align 4
%mul.0 = fmul fast float %B.1, %A.0
%B.0 = load float, ptr %B, align 4
%gep.B.2 = getelementptr inbounds float, ptr %B, i64 2
%B.2 = load float, ptr %gep.B.2, align 4
%mul.1 = fmul fast float %B.2, %B.0
%sub = fsub float %mul.0, %mul.1
%mul.2 = fmul fast float %B.0, %B.1
%mul.3 = fmul fast float %B.2, %A.0
%add = fadd float %mul.3, %mul.2
store float %sub, ptr %A, align 4
%gep.A.1 = getelementptr inbounds float, ptr %A, i64 1
store float %add, ptr %gep.A.1, align 4
store float %B.2, ptr %B, align 4
ret void
}
; FMA cannot be used due to missing fast-math flags, so SLP should kick in.
define void @slp_profitable_missing_fmf_on_fmul_fadd_fsub(ptr %A, ptr %B) {
; CHECK-LABEL: @slp_profitable_missing_fmf_on_fmul_fadd_fsub(
; CHECK-NEXT: [[GEP_B_1:%.*]] = getelementptr inbounds float, ptr [[B:%.*]], i64 1
; CHECK-NEXT: [[A_0:%.*]] = load float, ptr [[A:%.*]], align 4
; CHECK-NEXT: [[B_1:%.*]] = load float, ptr [[GEP_B_1]], align 4
; CHECK-NEXT: [[MUL_0:%.*]] = fmul float [[B_1]], [[A_0]]
; CHECK-NEXT: [[B_0:%.*]] = load float, ptr [[B]], align 4
; CHECK-NEXT: [[GEP_B_2:%.*]] = getelementptr inbounds float, ptr [[B]], i64 2
; CHECK-NEXT: [[B_2:%.*]] = load float, ptr [[GEP_B_2]], align 4
; CHECK-NEXT: [[MUL_1:%.*]] = fmul float [[B_2]], [[B_0]]
; CHECK-NEXT: [[SUB:%.*]] = fsub float [[MUL_0]], [[MUL_1]]
; CHECK-NEXT: [[MUL_2:%.*]] = fmul float [[B_0]], [[B_1]]
; CHECK-NEXT: [[MUL_3:%.*]] = fmul float [[B_2]], [[A_0]]
; CHECK-NEXT: [[ADD:%.*]] = fadd float [[MUL_3]], [[MUL_2]]
; CHECK-NEXT: store float [[SUB]], ptr [[A]], align 4
; CHECK-NEXT: [[GEP_A_1:%.*]] = getelementptr inbounds float, ptr [[A]], i64 1
; CHECK-NEXT: store float [[ADD]], ptr [[GEP_A_1]], align 4
; CHECK-NEXT: store float [[B_2]], ptr [[B]], align 4
; CHECK-NEXT: ret void
;
%gep.B.1 = getelementptr inbounds float, ptr %B, i64 1
%A.0 = load float, ptr %A, align 4
%B.1 = load float, ptr %gep.B.1, align 4
%mul.0 = fmul float %B.1, %A.0
%B.0 = load float, ptr %B, align 4
%gep.B.2 = getelementptr inbounds float, ptr %B, i64 2
%B.2 = load float, ptr %gep.B.2, align 4
%mul.1 = fmul float %B.2, %B.0
%sub = fsub float %mul.0, %mul.1
%mul.2 = fmul float %B.0, %B.1
%mul.3 = fmul float %B.2, %A.0
%add = fadd float %mul.3, %mul.2
store float %sub, ptr %A, align 4
%gep.A.1 = getelementptr inbounds float, ptr %A, i64 1
store float %add, ptr %gep.A.1, align 4
store float %B.2, ptr %B, align 4
ret void
}
; FMA cannot be used due to missing fast-math flags, so SLP should kick in.
define void @slp_profitable_missing_fmf_nnans_only(ptr %A, ptr %B) {
; CHECK-LABEL: @slp_profitable_missing_fmf_nnans_only(
; CHECK-NEXT: [[GEP_B_1:%.*]] = getelementptr inbounds float, ptr [[B:%.*]], i64 1
; CHECK-NEXT: [[A_0:%.*]] = load float, ptr [[A:%.*]], align 4
; CHECK-NEXT: [[B_1:%.*]] = load float, ptr [[GEP_B_1]], align 4
; CHECK-NEXT: [[MUL_0:%.*]] = fmul nnan float [[B_1]], [[A_0]]
; CHECK-NEXT: [[B_0:%.*]] = load float, ptr [[B]], align 4
; CHECK-NEXT: [[GEP_B_2:%.*]] = getelementptr inbounds float, ptr [[B]], i64 2
; CHECK-NEXT: [[B_2:%.*]] = load float, ptr [[GEP_B_2]], align 4
; CHECK-NEXT: [[MUL_1:%.*]] = fmul nnan float [[B_2]], [[B_0]]
; CHECK-NEXT: [[SUB:%.*]] = fsub nnan float [[MUL_0]], [[MUL_1]]
; CHECK-NEXT: [[MUL_2:%.*]] = fmul nnan float [[B_0]], [[B_1]]
; CHECK-NEXT: [[MUL_3:%.*]] = fmul nnan float [[B_2]], [[A_0]]
; CHECK-NEXT: [[ADD:%.*]] = fadd nnan float [[MUL_3]], [[MUL_2]]
; CHECK-NEXT: store float [[SUB]], ptr [[A]], align 4
; CHECK-NEXT: [[GEP_A_1:%.*]] = getelementptr inbounds float, ptr [[A]], i64 1
; CHECK-NEXT: store float [[ADD]], ptr [[GEP_A_1]], align 4
; CHECK-NEXT: store float [[B_2]], ptr [[B]], align 4
; CHECK-NEXT: ret void
;
%gep.B.1 = getelementptr inbounds float, ptr %B, i64 1
%A.0 = load float, ptr %A, align 4
%B.1 = load float, ptr %gep.B.1, align 4
%mul.0 = fmul nnan float %B.1, %A.0
%B.0 = load float, ptr %B, align 4
%gep.B.2 = getelementptr inbounds float, ptr %B, i64 2
%B.2 = load float, ptr %gep.B.2, align 4
%mul.1 = fmul nnan float %B.2, %B.0
%sub = fsub nnan float %mul.0, %mul.1
%mul.2 = fmul nnan float %B.0, %B.1
%mul.3 = fmul nnan float %B.2, %A.0
%add = fadd nnan float %mul.3, %mul.2
store float %sub, ptr %A, align 4
%gep.A.1 = getelementptr inbounds float, ptr %A, i64 1
store float %add, ptr %gep.A.1, align 4
store float %B.2, ptr %B, align 4
ret void
}
; Test case where not vectorizing is more profitable because multiple
; fmul/{fadd,fsub} pairs can be lowered to fma instructions.
define float @slp_not_profitable_in_loop(float %x, ptr %A) {
; CHECK-LABEL: @slp_not_profitable_in_loop(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[GEP_A_1:%.*]] = getelementptr inbounds float, ptr [[A:%.*]], i64 1
; CHECK-NEXT: [[L_0:%.*]] = load float, ptr [[GEP_A_1]], align 4
; CHECK-NEXT: [[GEP_A_2:%.*]] = getelementptr inbounds float, ptr [[A]], i64 2
; CHECK-NEXT: [[L_1:%.*]] = load float, ptr [[GEP_A_2]], align 4
; CHECK-NEXT: [[L_2:%.*]] = load float, ptr [[A]], align 4
; CHECK-NEXT: [[L_3:%.*]] = load float, ptr [[A]], align 4
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[IV:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[RED:%.*]] = phi float [ 0.000000e+00, [[ENTRY]] ], [ [[RED_NEXT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[MUL11:%.*]] = fmul fast float 3.000000e+00, [[L_0]]
; CHECK-NEXT: [[MUL12:%.*]] = fmul fast float 3.000000e+00, [[L_1]]
; CHECK-NEXT: [[MUL14:%.*]] = fmul fast float [[X:%.*]], [[L_2]]
; CHECK-NEXT: [[MUL16:%.*]] = fmul fast float 3.000000e+00, [[L_3]]
; CHECK-NEXT: [[ADD:%.*]] = fadd fast float [[MUL12]], [[MUL11]]
; CHECK-NEXT: [[ADD13:%.*]] = fadd fast float [[ADD]], [[MUL14]]
; CHECK-NEXT: [[RED_NEXT]] = fadd fast float [[ADD13]], [[MUL16]]
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
; CHECK-NEXT: [[CMP:%.*]] = icmp eq i64 [[IV]], 10
; CHECK-NEXT: br i1 [[CMP]], label [[EXIT:%.*]], label [[LOOP]]
; CHECK: exit:
; CHECK-NEXT: ret float [[RED_NEXT]]
;
entry:
%gep.A.1 = getelementptr inbounds float, ptr %A, i64 1
%l.0 = load float, ptr %gep.A.1, align 4
%gep.A.2 = getelementptr inbounds float, ptr %A, i64 2
%l.1 = load float, ptr %gep.A.2, align 4
%l.2 = load float, ptr %A, align 4
%l.3 = load float, ptr %A, align 4
br label %loop
loop:
%iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
%red = phi float [ 0.000000e+00, %entry ], [ %red.next, %loop ]
%mul11 = fmul fast float 3.000000e+00, %l.0
%mul12 = fmul fast float 3.000000e+00, %l.1
%mul14 = fmul fast float %x, %l.2
%mul16 = fmul fast float 3.000000e+00, %l.3
%add = fadd fast float %mul12, %mul11
%add13 = fadd fast float %add, %mul14
%red.next = fadd fast float %add13, %mul16
%iv.next = add nuw nsw i64 %iv, 1
%cmp = icmp eq i64 %iv, 10
br i1 %cmp, label %exit, label %loop
exit:
ret float %red.next
}
define void @slp_profitable(ptr %A, ptr %B, float %0) {
; CHECK-LABEL: @slp_profitable(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[SUB_I1096:%.*]] = fsub fast float 1.000000e+00, [[TMP0:%.*]]
; CHECK-NEXT: [[TMP1:%.*]] = load <2 x float>, ptr [[A:%.*]], align 4
; CHECK-NEXT: [[TMP2:%.*]] = insertelement <2 x float> poison, float [[TMP0]], i32 0
; CHECK-NEXT: [[TMP3:%.*]] = shufflevector <2 x float> [[TMP2]], <2 x float> poison, <2 x i32> zeroinitializer
; CHECK-NEXT: [[TMP4:%.*]] = fmul fast <2 x float> [[TMP1]], [[TMP3]]
; CHECK-NEXT: [[TMP5:%.*]] = shufflevector <2 x float> [[TMP4]], <2 x float> poison, <2 x i32> <i32 1, i32 0>
; CHECK-NEXT: [[TMP6:%.*]] = insertelement <2 x float> poison, float [[SUB_I1096]], i32 0
; CHECK-NEXT: [[TMP7:%.*]] = shufflevector <2 x float> [[TMP6]], <2 x float> poison, <2 x i32> zeroinitializer
; CHECK-NEXT: [[TMP8:%.*]] = fmul fast <2 x float> [[TMP1]], [[TMP7]]
; CHECK-NEXT: [[TMP9:%.*]] = fadd fast <2 x float> [[TMP5]], [[TMP8]]
; CHECK-NEXT: [[TMP10:%.*]] = fsub fast <2 x float> [[TMP5]], [[TMP8]]
; CHECK-NEXT: [[TMP11:%.*]] = shufflevector <2 x float> [[TMP9]], <2 x float> [[TMP10]], <2 x i32> <i32 0, i32 3>
; CHECK-NEXT: store <2 x float> [[TMP11]], ptr [[B:%.*]], align 4
; CHECK-NEXT: ret void
;
entry:
%gep.A.1 = getelementptr inbounds float, ptr %A, i64 1
%sub.i1096 = fsub fast float 1.000000e+00, %0
%1 = load float, ptr %A, align 4
%mul.i1100 = fmul fast float %1, %sub.i1096
%2 = load float, ptr %gep.A.1, align 4
%mul7.i1101 = fmul fast float %2, %0
%add.i1102 = fadd fast float %mul7.i1101, %mul.i1100
%mul14.i = fmul fast float %1, %0
%3 = fmul fast float %2, %sub.i1096
%add15.i = fsub fast float %mul14.i, %3
store float %add.i1102, ptr %B, align 4
%gep.B.1 = getelementptr inbounds float, ptr %B, i64 1
store float %add15.i, ptr %gep.B.1, align 4
ret void
}
|
