; NOTE: Assertions have been autogenerated by utils/update_test_checks.py ; RUN: opt -slp-vectorizer -S < %s -mtriple=x86_64-unknown-linux -mcpu=corei7-avx -verify | FileCheck %s -check-prefix=ENABLED ; ; Without supernode operand reordering, this does not get fully vectorized. ; S[0] = (A[0] + B[0]) + C[0] ; S[1] = (B[1] + C[1]) + A[1] define void @test_supernode_add(double* %Aarray, double* %Barray, double *%Carray, double *%Sarray) { ; ENABLED-LABEL: @test_supernode_add( ; ENABLED-NEXT: entry: ; ENABLED-NEXT: [[IDXA0:%.*]] = getelementptr inbounds double, double* [[AARRAY:%.*]], i64 0 ; ENABLED-NEXT: [[IDXA1:%.*]] = getelementptr inbounds double, double* [[AARRAY]], i64 1 ; ENABLED-NEXT: [[IDXB0:%.*]] = getelementptr inbounds double, double* [[BARRAY:%.*]], i64 0 ; ENABLED-NEXT: [[IDXB1:%.*]] = getelementptr inbounds double, double* [[BARRAY]], i64 1 ; ENABLED-NEXT: [[IDXC0:%.*]] = getelementptr inbounds double, double* [[CARRAY:%.*]], i64 0 ; ENABLED-NEXT: [[IDXC1:%.*]] = getelementptr inbounds double, double* [[CARRAY]], i64 1 ; ENABLED-NEXT: [[IDXS0:%.*]] = getelementptr inbounds double, double* [[SARRAY:%.*]], i64 0 ; ENABLED-NEXT: [[IDXS1:%.*]] = getelementptr inbounds double, double* [[SARRAY]], i64 1 ; ENABLED-NEXT: [[A0:%.*]] = load double, double* [[IDXA0]], align 8 ; ENABLED-NEXT: [[A1:%.*]] = load double, double* [[IDXA1]], align 8 ; ENABLED-NEXT: [[TMP0:%.*]] = bitcast double* [[IDXB0]] to <2 x double>* ; ENABLED-NEXT: [[TMP1:%.*]] = load <2 x double>, <2 x double>* [[TMP0]], align 8 ; ENABLED-NEXT: [[C0:%.*]] = load double, double* [[IDXC0]], align 8 ; ENABLED-NEXT: [[C1:%.*]] = load double, double* [[IDXC1]], align 8 ; ENABLED-NEXT: [[TMP2:%.*]] = insertelement <2 x double> poison, double [[A0]], i32 0 ; ENABLED-NEXT: [[TMP3:%.*]] = insertelement <2 x double> [[TMP2]], double [[C1]], i32 1 ; ENABLED-NEXT: [[TMP4:%.*]] = fadd fast <2 x double> [[TMP3]], [[TMP1]] ; ENABLED-NEXT: [[TMP5:%.*]] = insertelement <2 x double> poison, double [[C0]], i32 0 ; ENABLED-NEXT: [[TMP6:%.*]] = insertelement <2 x double> [[TMP5]], double [[A1]], i32 1 ; ENABLED-NEXT: [[TMP7:%.*]] = fadd fast <2 x double> [[TMP4]], [[TMP6]] ; ENABLED-NEXT: [[TMP8:%.*]] = bitcast double* [[IDXS0]] to <2 x double>* ; ENABLED-NEXT: store <2 x double> [[TMP7]], <2 x double>* [[TMP8]], align 8 ; ENABLED-NEXT: ret void ; entry: %idxA0 = getelementptr inbounds double, double* %Aarray, i64 0 %idxA1 = getelementptr inbounds double, double* %Aarray, i64 1 %idxB0 = getelementptr inbounds double, double* %Barray, i64 0 %idxB1 = getelementptr inbounds double, double* %Barray, i64 1 %idxC0 = getelementptr inbounds double, double* %Carray, i64 0 %idxC1 = getelementptr inbounds double, double* %Carray, i64 1 %idxS0 = getelementptr inbounds double, double* %Sarray, i64 0 %idxS1 = getelementptr inbounds double, double* %Sarray, i64 1 %A0 = load double, double *%idxA0, align 8 %A1 = load double, double *%idxA1, align 8 %B0 = load double, double *%idxB0, align 8 %B1 = load double, double *%idxB1, align 8 %C0 = load double, double *%idxC0, align 8 %C1 = load double, double *%idxC1, align 8 %addA0B0 = fadd fast double %A0, %B0 %addB1C1 = fadd fast double %B1, %C1 %add0 = fadd fast double %addA0B0, %C0 %add1 = fadd fast double %addB1C1, %A1 store double %add0, double *%idxS0, align 8 store double %add1, double *%idxS1, align 8 ret void } ; Without supernode operand reordering, this does not get fully vectorized. ; S[0] = (A[0] - B[0]) + C[0] ; S[1] = (C[1] - B[1]) + A[1] define void @test_supernode_addsub(double* %Aarray, double* %Barray, double *%Carray, double *%Sarray) { ; ENABLED-LABEL: @test_supernode_addsub( ; ENABLED-NEXT: entry: ; ENABLED-NEXT: [[IDXA0:%.*]] = getelementptr inbounds double, double* [[AARRAY:%.*]], i64 0 ; ENABLED-NEXT: [[IDXA1:%.*]] = getelementptr inbounds double, double* [[AARRAY]], i64 1 ; ENABLED-NEXT: [[IDXB0:%.*]] = getelementptr inbounds double, double* [[BARRAY:%.*]], i64 0 ; ENABLED-NEXT: [[IDXB1:%.*]] = getelementptr inbounds double, double* [[BARRAY]], i64 1 ; ENABLED-NEXT: [[IDXC0:%.*]] = getelementptr inbounds double, double* [[CARRAY:%.*]], i64 0 ; ENABLED-NEXT: [[IDXC1:%.*]] = getelementptr inbounds double, double* [[CARRAY]], i64 1 ; ENABLED-NEXT: [[IDXS0:%.*]] = getelementptr inbounds double, double* [[SARRAY:%.*]], i64 0 ; ENABLED-NEXT: [[IDXS1:%.*]] = getelementptr inbounds double, double* [[SARRAY]], i64 1 ; ENABLED-NEXT: [[A0:%.*]] = load double, double* [[IDXA0]], align 8 ; ENABLED-NEXT: [[A1:%.*]] = load double, double* [[IDXA1]], align 8 ; ENABLED-NEXT: [[TMP0:%.*]] = bitcast double* [[IDXB0]] to <2 x double>* ; ENABLED-NEXT: [[TMP1:%.*]] = load <2 x double>, <2 x double>* [[TMP0]], align 8 ; ENABLED-NEXT: [[C0:%.*]] = load double, double* [[IDXC0]], align 8 ; ENABLED-NEXT: [[C1:%.*]] = load double, double* [[IDXC1]], align 8 ; ENABLED-NEXT: [[TMP2:%.*]] = insertelement <2 x double> poison, double [[A0]], i32 0 ; ENABLED-NEXT: [[TMP3:%.*]] = insertelement <2 x double> [[TMP2]], double [[C1]], i32 1 ; ENABLED-NEXT: [[TMP4:%.*]] = fsub fast <2 x double> [[TMP3]], [[TMP1]] ; ENABLED-NEXT: [[TMP5:%.*]] = insertelement <2 x double> poison, double [[C0]], i32 0 ; ENABLED-NEXT: [[TMP6:%.*]] = insertelement <2 x double> [[TMP5]], double [[A1]], i32 1 ; ENABLED-NEXT: [[TMP7:%.*]] = fadd fast <2 x double> [[TMP4]], [[TMP6]] ; ENABLED-NEXT: [[TMP8:%.*]] = bitcast double* [[IDXS0]] to <2 x double>* ; ENABLED-NEXT: store <2 x double> [[TMP7]], <2 x double>* [[TMP8]], align 8 ; ENABLED-NEXT: ret void ; entry: %idxA0 = getelementptr inbounds double, double* %Aarray, i64 0 %idxA1 = getelementptr inbounds double, double* %Aarray, i64 1 %idxB0 = getelementptr inbounds double, double* %Barray, i64 0 %idxB1 = getelementptr inbounds double, double* %Barray, i64 1 %idxC0 = getelementptr inbounds double, double* %Carray, i64 0 %idxC1 = getelementptr inbounds double, double* %Carray, i64 1 %idxS0 = getelementptr inbounds double, double* %Sarray, i64 0 %idxS1 = getelementptr inbounds double, double* %Sarray, i64 1 %A0 = load double, double *%idxA0, align 8 %A1 = load double, double *%idxA1, align 8 %B0 = load double, double *%idxB0, align 8 %B1 = load double, double *%idxB1, align 8 %C0 = load double, double *%idxC0, align 8 %C1 = load double, double *%idxC1, align 8 %subA0B0 = fsub fast double %A0, %B0 %subC1B1 = fsub fast double %C1, %B1 %add0 = fadd fast double %subA0B0, %C0 %add1 = fadd fast double %subC1B1, %A1 store double %add0, double *%idxS0, align 8 store double %add1, double *%idxS1, align 8 ret void } ; Without supernode operand reordering, this does not get fully vectorized. ; This checks that the super-node works with alternate sequences. ; ; S[0] = (A[0] - B[0]) - C[0] ; S[1] = (B[1] + C[1]) + A[1] define void @test_supernode_addsub_alt(double* %Aarray, double* %Barray, double *%Carray, double *%Sarray) { ; ENABLED-LABEL: @test_supernode_addsub_alt( ; ENABLED-NEXT: entry: ; ENABLED-NEXT: [[IDXA0:%.*]] = getelementptr inbounds double, double* [[AARRAY:%.*]], i64 0 ; ENABLED-NEXT: [[IDXA1:%.*]] = getelementptr inbounds double, double* [[AARRAY]], i64 1 ; ENABLED-NEXT: [[IDXB0:%.*]] = getelementptr inbounds double, double* [[BARRAY:%.*]], i64 0 ; ENABLED-NEXT: [[IDXB1:%.*]] = getelementptr inbounds double, double* [[BARRAY]], i64 1 ; ENABLED-NEXT: [[IDXC0:%.*]] = getelementptr inbounds double, double* [[CARRAY:%.*]], i64 0 ; ENABLED-NEXT: [[IDXC1:%.*]] = getelementptr inbounds double, double* [[CARRAY]], i64 1 ; ENABLED-NEXT: [[IDXS0:%.*]] = getelementptr inbounds double, double* [[SARRAY:%.*]], i64 0 ; ENABLED-NEXT: [[IDXS1:%.*]] = getelementptr inbounds double, double* [[SARRAY]], i64 1 ; ENABLED-NEXT: [[A0:%.*]] = load double, double* [[IDXA0]], align 8 ; ENABLED-NEXT: [[A1:%.*]] = load double, double* [[IDXA1]], align 8 ; ENABLED-NEXT: [[B0:%.*]] = load double, double* [[IDXB0]], align 8 ; ENABLED-NEXT: [[B1:%.*]] = load double, double* [[IDXB1]], align 8 ; ENABLED-NEXT: [[C0:%.*]] = load double, double* [[IDXC0]], align 8 ; ENABLED-NEXT: [[C1:%.*]] = load double, double* [[IDXC1]], align 8 ; ENABLED-NEXT: [[SUBA0B0:%.*]] = fsub fast double [[A0]], [[B0]] ; ENABLED-NEXT: [[ADDB1C1:%.*]] = fadd fast double [[B1]], [[C1]] ; ENABLED-NEXT: [[SUB0:%.*]] = fsub fast double [[SUBA0B0]], [[C0]] ; ENABLED-NEXT: [[ADD1:%.*]] = fadd fast double [[ADDB1C1]], [[A1]] ; ENABLED-NEXT: store double [[SUB0]], double* [[IDXS0]], align 8 ; ENABLED-NEXT: store double [[ADD1]], double* [[IDXS1]], align 8 ; ENABLED-NEXT: ret void ; entry: %idxA0 = getelementptr inbounds double, double* %Aarray, i64 0 %idxA1 = getelementptr inbounds double, double* %Aarray, i64 1 %idxB0 = getelementptr inbounds double, double* %Barray, i64 0 %idxB1 = getelementptr inbounds double, double* %Barray, i64 1 %idxC0 = getelementptr inbounds double, double* %Carray, i64 0 %idxC1 = getelementptr inbounds double, double* %Carray, i64 1 %idxS0 = getelementptr inbounds double, double* %Sarray, i64 0 %idxS1 = getelementptr inbounds double, double* %Sarray, i64 1 %A0 = load double, double *%idxA0, align 8 %A1 = load double, double *%idxA1, align 8 %B0 = load double, double *%idxB0, align 8 %B1 = load double, double *%idxB1, align 8 %C0 = load double, double *%idxC0, align 8 %C1 = load double, double *%idxC1, align 8 %subA0B0 = fsub fast double %A0, %B0 %addB1C1 = fadd fast double %B1, %C1 %sub0 = fsub fast double %subA0B0, %C0 %add1 = fadd fast double %addB1C1, %A1 store double %sub0, double *%idxS0, align 8 store double %add1, double *%idxS1, align 8 ret void } ; This checks that vectorizeTree() works correctly with the supernode ; and does not generate uses before defs. ; If all of the operands of the supernode are vectorizable, then the scheduler ; will fix their position in the program. If not, then the scheduler may not ; touch them, leading to uses before defs. ; ; A0 = ... ; C = ... ; t1 = A0 + C ; B0 = ... ; t2 = t1 + B0 ; A1 = ... ; B1 = ... ; t3 = A1 + B1 ; D = ... ; t4 = t3 + D ; ; ; A0 C A1 B1 A0 C A1 D A0:1 C,D ; \ / \ / Reorder \ / \ / Bundles \ / ; t1 + B0 t3 + D -------> t1 + B0 t3 + B1 ------> t1:3 + B0:1 ; |/ |/ |/ |/ |/ ; t2 + t4 + t2 + t4 + t2:4 + ; ; After reordering, 'D' conceptually becomes an operand of t3: ; t3 = A1 + D ; But D is defined *after* its use. ; define void @supernode_scheduling(double* %Aarray, double* %Barray, double *%Carray, double *%Darray, double *%Sarray) { ; ENABLED-LABEL: @supernode_scheduling( ; ENABLED-NEXT: entry: ; ENABLED-NEXT: [[IDXA0:%.*]] = getelementptr inbounds double, double* [[AARRAY:%.*]], i64 0 ; ENABLED-NEXT: [[IDXA1:%.*]] = getelementptr inbounds double, double* [[AARRAY]], i64 1 ; ENABLED-NEXT: [[IDXB0:%.*]] = getelementptr inbounds double, double* [[BARRAY:%.*]], i64 0 ; ENABLED-NEXT: [[IDXB1:%.*]] = getelementptr inbounds double, double* [[BARRAY]], i64 1 ; ENABLED-NEXT: [[IDXC:%.*]] = getelementptr inbounds double, double* [[CARRAY:%.*]], i64 0 ; ENABLED-NEXT: [[IDXD:%.*]] = getelementptr inbounds double, double* [[DARRAY:%.*]], i64 0 ; ENABLED-NEXT: [[IDXS0:%.*]] = getelementptr inbounds double, double* [[SARRAY:%.*]], i64 0 ; ENABLED-NEXT: [[IDXS1:%.*]] = getelementptr inbounds double, double* [[SARRAY]], i64 1 ; ENABLED-NEXT: [[C:%.*]] = load double, double* [[IDXC]], align 8 ; ENABLED-NEXT: [[B0:%.*]] = load double, double* [[IDXB0]], align 8 ; ENABLED-NEXT: [[TMP0:%.*]] = bitcast double* [[IDXA0]] to <2 x double>* ; ENABLED-NEXT: [[TMP1:%.*]] = load <2 x double>, <2 x double>* [[TMP0]], align 8 ; ENABLED-NEXT: [[B1:%.*]] = load double, double* [[IDXB1]], align 8 ; ENABLED-NEXT: [[TMP2:%.*]] = insertelement <2 x double> poison, double [[C]], i32 0 ; ENABLED-NEXT: [[TMP3:%.*]] = insertelement <2 x double> [[TMP2]], double [[B1]], i32 1 ; ENABLED-NEXT: [[TMP4:%.*]] = fadd fast <2 x double> [[TMP1]], [[TMP3]] ; ENABLED-NEXT: [[D:%.*]] = load double, double* [[IDXD]], align 8 ; ENABLED-NEXT: [[TMP5:%.*]] = insertelement <2 x double> poison, double [[B0]], i32 0 ; ENABLED-NEXT: [[TMP6:%.*]] = insertelement <2 x double> [[TMP5]], double [[D]], i32 1 ; ENABLED-NEXT: [[TMP7:%.*]] = fadd fast <2 x double> [[TMP4]], [[TMP6]] ; ENABLED-NEXT: [[TMP8:%.*]] = bitcast double* [[IDXS0]] to <2 x double>* ; ENABLED-NEXT: store <2 x double> [[TMP7]], <2 x double>* [[TMP8]], align 8 ; ENABLED-NEXT: ret void ; entry: %idxA0 = getelementptr inbounds double, double* %Aarray, i64 0 %idxA1 = getelementptr inbounds double, double* %Aarray, i64 1 %idxB0 = getelementptr inbounds double, double* %Barray, i64 0 %idxB1 = getelementptr inbounds double, double* %Barray, i64 1 %idxC = getelementptr inbounds double, double* %Carray, i64 0 %idxD = getelementptr inbounds double, double* %Darray, i64 0 %idxS0 = getelementptr inbounds double, double* %Sarray, i64 0 %idxS1 = getelementptr inbounds double, double* %Sarray, i64 1 %A0 = load double, double *%idxA0, align 8 %C = load double, double *%idxC, align 8 %t1 = fadd fast double %A0, %C %B0 = load double, double *%idxB0, align 8 %t2 = fadd fast double %t1, %B0 %A1 = load double, double *%idxA1, align 8 %B1 = load double, double *%idxB1, align 8 %t3 = fadd fast double %A1, %B1 %D = load double, double *%idxD, align 8 %t4 = fadd fast double %t3, %D store double %t2, double *%idxS0, align 8 store double %t4, double *%idxS1, align 8 ret void } ; The SLP scheduler has trouble moving instructions across blocks. ; Even though we can build a SuperNode for this example, we should not because the scheduler ; cannot handle the cross-block instruction motion that is required once the operands of the ; SuperNode are reordered. ; ; bb1: ; A0 = ... ; B1 = ... ; Tmp0 = A0 + 2.0 ; Tmp1 = B1 + 2.0 ; ; bb2: ; A1 = ... ; B0 = ... ; S[0] = Tmp0 + B0 ; S[1] = Tmp1 + A1 define void @supernode_scheduling_cross_block(double* %Aarray, double* %Barray, double *%Sarray) { ; ENABLED-LABEL: @supernode_scheduling_cross_block( ; ENABLED-NEXT: entry: ; ENABLED-NEXT: [[IDXA0:%.*]] = getelementptr inbounds double, double* [[AARRAY:%.*]], i64 0 ; ENABLED-NEXT: [[IDXA1:%.*]] = getelementptr inbounds double, double* [[AARRAY]], i64 1 ; ENABLED-NEXT: [[IDXB0:%.*]] = getelementptr inbounds double, double* [[BARRAY:%.*]], i64 0 ; ENABLED-NEXT: [[IDXB1:%.*]] = getelementptr inbounds double, double* [[BARRAY]], i64 1 ; ENABLED-NEXT: [[IDXS0:%.*]] = getelementptr inbounds double, double* [[SARRAY:%.*]], i64 0 ; ENABLED-NEXT: [[IDXS1:%.*]] = getelementptr inbounds double, double* [[SARRAY]], i64 1 ; ENABLED-NEXT: [[A0:%.*]] = load double, double* [[IDXA0]], align 8 ; ENABLED-NEXT: [[B1:%.*]] = load double, double* [[IDXB1]], align 8 ; ENABLED-NEXT: [[TMP0:%.*]] = insertelement <2 x double> poison, double [[A0]], i32 0 ; ENABLED-NEXT: [[TMP1:%.*]] = insertelement <2 x double> [[TMP0]], double [[B1]], i32 1 ; ENABLED-NEXT: [[TMP2:%.*]] = fadd fast <2 x double> [[TMP1]], ; ENABLED-NEXT: br label [[BB:%.*]] ; ENABLED: bb: ; ENABLED-NEXT: [[A1:%.*]] = load double, double* [[IDXA1]], align 8 ; ENABLED-NEXT: [[B0:%.*]] = load double, double* [[IDXB0]], align 8 ; ENABLED-NEXT: [[TMP3:%.*]] = insertelement <2 x double> poison, double [[B0]], i32 0 ; ENABLED-NEXT: [[TMP4:%.*]] = insertelement <2 x double> [[TMP3]], double [[A1]], i32 1 ; ENABLED-NEXT: [[TMP5:%.*]] = fadd fast <2 x double> [[TMP2]], [[TMP4]] ; ENABLED-NEXT: [[TMP6:%.*]] = bitcast double* [[IDXS0]] to <2 x double>* ; ENABLED-NEXT: store <2 x double> [[TMP5]], <2 x double>* [[TMP6]], align 8 ; ENABLED-NEXT: ret void ; entry: %idxA0 = getelementptr inbounds double, double* %Aarray, i64 0 %idxA1 = getelementptr inbounds double, double* %Aarray, i64 1 %idxB0 = getelementptr inbounds double, double* %Barray, i64 0 %idxB1 = getelementptr inbounds double, double* %Barray, i64 1 %idxS0 = getelementptr inbounds double, double* %Sarray, i64 0 %idxS1 = getelementptr inbounds double, double* %Sarray, i64 1 %A0 = load double, double *%idxA0, align 8 %B1 = load double, double *%idxB1, align 8 %Tmp0 = fadd fast double %A0, 2.0 %Tmp1 = fadd fast double %B1, 2.0 br label %bb bb: %A1 = load double, double *%idxA1, align 8 %B0 = load double, double *%idxB0, align 8 %Sum0 = fadd fast double %Tmp0, %B0 %Sum1 = fadd fast double %Tmp1, %A1 store double %Sum0, double *%idxS0, align 8 store double %Sum1, double *%idxS1, align 8 ret void }