|  | ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py | 
|  | ; RUN: opt -S -mtriple=aarch64--linux-gnu -passes=slp-vectorizer,dce,instcombine -slp-threshold=-7 -pass-remarks-output=%t < %s | FileCheck %s | 
|  | ; RUN: cat %t | FileCheck -check-prefix=YAML %s | 
|  | ; RUN: opt -S -mtriple=aarch64--linux-gnu -passes='slp-vectorizer,dce,instcombine' -slp-threshold=-7 -pass-remarks-output=%t < %s | FileCheck %s | 
|  | ; RUN: cat %t | FileCheck -check-prefix=YAML %s | 
|  |  | 
|  | ; These tests check that we remove from consideration pairs of seed | 
|  | ; getelementptrs when they are known to have a constant difference. Such pairs | 
|  | ; are likely not good candidates for vectorization since one can be computed | 
|  | ; from the other. We use an unprofitable threshold to force vectorization. | 
|  | ; | 
|  | ; int getelementptr(int *g, int n, int w, int x, int y, int z) { | 
|  | ;   int sum = 0; | 
|  | ;   for (int i = 0; i < n ; ++i) { | 
|  | ;     sum += g[2*i + w]; sum += g[2*i + x]; | 
|  | ;     sum += g[2*i + y]; sum += g[2*i + z]; | 
|  | ;   } | 
|  | ;   return sum; | 
|  | ; } | 
|  | ; | 
|  |  | 
|  | ; YAML-LABEL: Function:        getelementptr_4x32 | 
|  | ; YAML:      --- !Passed | 
|  | ; YAML-NEXT: Pass:            slp-vectorizer | 
|  | ; YAML-NEXT: Name:            VectorizedList | 
|  | ; YAML-NEXT: Function:        getelementptr_4x32 | 
|  | ; YAML-NEXT: Args: | 
|  | ; YAML-NEXT:   - String:          'SLP vectorized with cost ' | 
|  | ; YAML-NEXT:   - Cost:            '4' | 
|  | ; YAML-NEXT:   - String:          ' and with tree size ' | 
|  | ; YAML-NEXT:   - TreeSize:        '3' | 
|  |  | 
|  | ; YAML:      --- !Passed | 
|  | ; YAML-NEXT: Pass:            slp-vectorizer | 
|  | ; YAML-NEXT: Name:            VectorizedList | 
|  | ; YAML-NEXT: Function:        getelementptr_4x32 | 
|  | ; YAML-NEXT: Args: | 
|  | ; YAML-NEXT:   - String:          'SLP vectorized with cost ' | 
|  | ; YAML-NEXT:   - Cost:            '6' | 
|  | ; YAML-NEXT:   - String:          ' and with tree size ' | 
|  | ; YAML-NEXT:   - TreeSize:        '3' | 
|  |  | 
|  | define i32 @getelementptr_4x32(ptr nocapture readonly %g, i32 %n, i32 %x, i32 %y, i32 %z) { | 
|  | ; CHECK-LABEL: @getelementptr_4x32( | 
|  | ; CHECK-NEXT:  entry: | 
|  | ; CHECK-NEXT:    [[CMP31:%.*]] = icmp sgt i32 [[N:%.*]], 0 | 
|  | ; CHECK-NEXT:    br i1 [[CMP31]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_COND_CLEANUP:%.*]] | 
|  | ; CHECK:       for.body.preheader: | 
|  | ; CHECK-NEXT:    [[TMP0:%.*]] = insertelement <2 x i32> <i32 0, i32 poison>, i32 [[X:%.*]], i64 1 | 
|  | ; CHECK-NEXT:    [[TMP1:%.*]] = insertelement <2 x i32> poison, i32 [[Y:%.*]], i64 0 | 
|  | ; CHECK-NEXT:    [[TMP2:%.*]] = insertelement <2 x i32> [[TMP1]], i32 [[Z:%.*]], i64 1 | 
|  | ; CHECK-NEXT:    br label [[FOR_BODY:%.*]] | 
|  | ; CHECK:       for.cond.cleanup.loopexit: | 
|  | ; CHECK-NEXT:    br label [[FOR_COND_CLEANUP]] | 
|  | ; CHECK:       for.cond.cleanup: | 
|  | ; CHECK-NEXT:    [[SUM_0_LCSSA:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[ADD16:%.*]], [[FOR_COND_CLEANUP_LOOPEXIT:%.*]] ] | 
|  | ; CHECK-NEXT:    ret i32 [[SUM_0_LCSSA]] | 
|  | ; CHECK:       for.body: | 
|  | ; CHECK-NEXT:    [[INDVARS_IV:%.*]] = phi i32 [ 0, [[FOR_BODY_PREHEADER]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ] | 
|  | ; CHECK-NEXT:    [[SUM_032:%.*]] = phi i32 [ 0, [[FOR_BODY_PREHEADER]] ], [ [[ADD16]], [[FOR_BODY]] ] | 
|  | ; CHECK-NEXT:    [[T4:%.*]] = shl nuw nsw i32 [[INDVARS_IV]], 1 | 
|  | ; CHECK-NEXT:    [[TMP3:%.*]] = insertelement <2 x i32> poison, i32 [[T4]], i64 0 | 
|  | ; CHECK-NEXT:    [[TMP4:%.*]] = shufflevector <2 x i32> [[TMP3]], <2 x i32> poison, <2 x i32> zeroinitializer | 
|  | ; CHECK-NEXT:    [[TMP5:%.*]] = add nsw <2 x i32> [[TMP4]], [[TMP0]] | 
|  | ; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <2 x i32> [[TMP5]], i64 0 | 
|  | ; CHECK-NEXT:    [[TMP7:%.*]] = zext nneg i32 [[TMP6]] to i64 | 
|  | ; CHECK-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[G:%.*]], i64 [[TMP7]] | 
|  | ; CHECK-NEXT:    [[T6:%.*]] = load i32, ptr [[ARRAYIDX]], align 4 | 
|  | ; CHECK-NEXT:    [[ADD1:%.*]] = add nsw i32 [[T6]], [[SUM_032]] | 
|  | ; CHECK-NEXT:    [[TMP8:%.*]] = extractelement <2 x i32> [[TMP5]], i64 1 | 
|  | ; CHECK-NEXT:    [[TMP9:%.*]] = sext i32 [[TMP8]] to i64 | 
|  | ; CHECK-NEXT:    [[ARRAYIDX5:%.*]] = getelementptr inbounds i32, ptr [[G]], i64 [[TMP9]] | 
|  | ; CHECK-NEXT:    [[T8:%.*]] = load i32, ptr [[ARRAYIDX5]], align 4 | 
|  | ; CHECK-NEXT:    [[ADD6:%.*]] = add nsw i32 [[ADD1]], [[T8]] | 
|  | ; CHECK-NEXT:    [[TMP10:%.*]] = add nsw <2 x i32> [[TMP4]], [[TMP2]] | 
|  | ; CHECK-NEXT:    [[TMP11:%.*]] = extractelement <2 x i32> [[TMP10]], i64 0 | 
|  | ; CHECK-NEXT:    [[TMP12:%.*]] = sext i32 [[TMP11]] to i64 | 
|  | ; CHECK-NEXT:    [[ARRAYIDX10:%.*]] = getelementptr inbounds i32, ptr [[G]], i64 [[TMP12]] | 
|  | ; CHECK-NEXT:    [[T10:%.*]] = load i32, ptr [[ARRAYIDX10]], align 4 | 
|  | ; CHECK-NEXT:    [[ADD11:%.*]] = add nsw i32 [[ADD6]], [[T10]] | 
|  | ; CHECK-NEXT:    [[TMP13:%.*]] = extractelement <2 x i32> [[TMP10]], i64 1 | 
|  | ; CHECK-NEXT:    [[TMP14:%.*]] = sext i32 [[TMP13]] to i64 | 
|  | ; CHECK-NEXT:    [[ARRAYIDX15:%.*]] = getelementptr inbounds i32, ptr [[G]], i64 [[TMP14]] | 
|  | ; CHECK-NEXT:    [[T12:%.*]] = load i32, ptr [[ARRAYIDX15]], align 4 | 
|  | ; CHECK-NEXT:    [[ADD16]] = add nsw i32 [[ADD11]], [[T12]] | 
|  | ; CHECK-NEXT:    [[INDVARS_IV_NEXT]] = add nuw nsw i32 [[INDVARS_IV]], 1 | 
|  | ; CHECK-NEXT:    [[EXITCOND:%.*]] = icmp eq i32 [[INDVARS_IV_NEXT]], [[N]] | 
|  | ; CHECK-NEXT:    br i1 [[EXITCOND]], label [[FOR_COND_CLEANUP_LOOPEXIT]], label [[FOR_BODY]] | 
|  | ; | 
|  | entry: | 
|  | %cmp31 = icmp sgt i32 %n, 0 | 
|  | br i1 %cmp31, label %for.body.preheader, label %for.cond.cleanup | 
|  |  | 
|  | for.body.preheader: | 
|  | br label %for.body | 
|  |  | 
|  | for.cond.cleanup.loopexit: | 
|  | br label %for.cond.cleanup | 
|  |  | 
|  | for.cond.cleanup: | 
|  | %sum.0.lcssa = phi i32 [ 0, %entry ], [ %add16, %for.cond.cleanup.loopexit ] | 
|  | ret i32 %sum.0.lcssa | 
|  |  | 
|  | for.body: | 
|  | %indvars.iv = phi i32 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ] | 
|  | %sum.032 = phi i32 [ 0, %for.body.preheader ], [ %add16, %for.body ] | 
|  | %t4 = shl nsw i32 %indvars.iv, 1 | 
|  | %t5 = add nsw i32 %t4, 0 | 
|  | %arrayidx = getelementptr inbounds i32, ptr %g, i32 %t5 | 
|  | %t6 = load i32, ptr %arrayidx, align 4 | 
|  | %add1 = add nsw i32 %t6, %sum.032 | 
|  | %t7 = add nsw i32 %t4, %x | 
|  | %arrayidx5 = getelementptr inbounds i32, ptr %g, i32 %t7 | 
|  | %t8 = load i32, ptr %arrayidx5, align 4 | 
|  | %add6 = add nsw i32 %add1, %t8 | 
|  | %t9 = add nsw i32 %t4, %y | 
|  | %arrayidx10 = getelementptr inbounds i32, ptr %g, i32 %t9 | 
|  | %t10 = load i32, ptr %arrayidx10, align 4 | 
|  | %add11 = add nsw i32 %add6, %t10 | 
|  | %t11 = add nsw i32 %t4, %z | 
|  | %arrayidx15 = getelementptr inbounds i32, ptr %g, i32 %t11 | 
|  | %t12 = load i32, ptr %arrayidx15, align 4 | 
|  | %add16 = add nsw i32 %add11, %t12 | 
|  | %indvars.iv.next = add nuw nsw i32 %indvars.iv, 1 | 
|  | %exitcond = icmp eq i32 %indvars.iv.next , %n | 
|  | br i1 %exitcond, label %for.cond.cleanup.loopexit, label %for.body | 
|  | } | 
|  |  | 
|  | ; YAML-LABEL: Function:        getelementptr_2x32 | 
|  | ; YAML:      --- !Passed | 
|  | ; YAML-NEXT: Pass:            slp-vectorizer | 
|  | ; YAML-NEXT: Name:            VectorizedList | 
|  | ; YAML-NEXT: Function:        getelementptr_2x32 | 
|  | ; YAML-NEXT: Args: | 
|  | ; YAML-NEXT:   - String:          'SLP vectorized with cost ' | 
|  | ; YAML-NEXT:   - Cost:            '6' | 
|  | ; YAML-NEXT:   - String:          ' and with tree size ' | 
|  | ; YAML-NEXT:   - TreeSize:        '3' | 
|  |  | 
|  | define i32 @getelementptr_2x32(ptr nocapture readonly %g, i32 %n, i32 %x, i32 %y, i32 %z) { | 
|  | ; CHECK-LABEL: @getelementptr_2x32( | 
|  | ; CHECK-NEXT:  entry: | 
|  | ; CHECK-NEXT:    [[CMP31:%.*]] = icmp sgt i32 [[N:%.*]], 0 | 
|  | ; CHECK-NEXT:    br i1 [[CMP31]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_COND_CLEANUP:%.*]] | 
|  | ; CHECK:       for.body.preheader: | 
|  | ; CHECK-NEXT:    [[TMP0:%.*]] = insertelement <2 x i32> poison, i32 [[Y:%.*]], i64 0 | 
|  | ; CHECK-NEXT:    [[TMP1:%.*]] = insertelement <2 x i32> [[TMP0]], i32 [[Z:%.*]], i64 1 | 
|  | ; CHECK-NEXT:    br label [[FOR_BODY:%.*]] | 
|  | ; CHECK:       for.cond.cleanup.loopexit: | 
|  | ; CHECK-NEXT:    br label [[FOR_COND_CLEANUP]] | 
|  | ; CHECK:       for.cond.cleanup: | 
|  | ; CHECK-NEXT:    [[SUM_0_LCSSA:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[ADD16:%.*]], [[FOR_COND_CLEANUP_LOOPEXIT:%.*]] ] | 
|  | ; CHECK-NEXT:    ret i32 [[SUM_0_LCSSA]] | 
|  | ; CHECK:       for.body: | 
|  | ; CHECK-NEXT:    [[INDVARS_IV:%.*]] = phi i32 [ 0, [[FOR_BODY_PREHEADER]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ] | 
|  | ; CHECK-NEXT:    [[SUM_032:%.*]] = phi i32 [ 0, [[FOR_BODY_PREHEADER]] ], [ [[ADD16]], [[FOR_BODY]] ] | 
|  | ; CHECK-NEXT:    [[T4:%.*]] = shl nuw nsw i32 [[INDVARS_IV]], 1 | 
|  | ; CHECK-NEXT:    [[TMP2:%.*]] = zext nneg i32 [[T4]] to i64 | 
|  | ; CHECK-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[G:%.*]], i64 [[TMP2]] | 
|  | ; CHECK-NEXT:    [[T6:%.*]] = load i32, ptr [[ARRAYIDX]], align 4 | 
|  | ; CHECK-NEXT:    [[ADD1:%.*]] = add nsw i32 [[T6]], [[SUM_032]] | 
|  | ; CHECK-NEXT:    [[T7:%.*]] = or disjoint i32 [[T4]], 1 | 
|  | ; CHECK-NEXT:    [[TMP3:%.*]] = zext nneg i32 [[T7]] to i64 | 
|  | ; CHECK-NEXT:    [[ARRAYIDX5:%.*]] = getelementptr inbounds i32, ptr [[G]], i64 [[TMP3]] | 
|  | ; CHECK-NEXT:    [[T8:%.*]] = load i32, ptr [[ARRAYIDX5]], align 4 | 
|  | ; CHECK-NEXT:    [[ADD6:%.*]] = add nsw i32 [[ADD1]], [[T8]] | 
|  | ; CHECK-NEXT:    [[TMP4:%.*]] = insertelement <2 x i32> poison, i32 [[T4]], i64 0 | 
|  | ; CHECK-NEXT:    [[TMP5:%.*]] = shufflevector <2 x i32> [[TMP4]], <2 x i32> poison, <2 x i32> zeroinitializer | 
|  | ; CHECK-NEXT:    [[TMP6:%.*]] = add nsw <2 x i32> [[TMP5]], [[TMP1]] | 
|  | ; CHECK-NEXT:    [[TMP7:%.*]] = extractelement <2 x i32> [[TMP6]], i64 0 | 
|  | ; CHECK-NEXT:    [[TMP8:%.*]] = sext i32 [[TMP7]] to i64 | 
|  | ; CHECK-NEXT:    [[ARRAYIDX10:%.*]] = getelementptr inbounds i32, ptr [[G]], i64 [[TMP8]] | 
|  | ; CHECK-NEXT:    [[T10:%.*]] = load i32, ptr [[ARRAYIDX10]], align 4 | 
|  | ; CHECK-NEXT:    [[ADD11:%.*]] = add nsw i32 [[ADD6]], [[T10]] | 
|  | ; CHECK-NEXT:    [[TMP9:%.*]] = extractelement <2 x i32> [[TMP6]], i64 1 | 
|  | ; CHECK-NEXT:    [[TMP10:%.*]] = sext i32 [[TMP9]] to i64 | 
|  | ; CHECK-NEXT:    [[ARRAYIDX15:%.*]] = getelementptr inbounds i32, ptr [[G]], i64 [[TMP10]] | 
|  | ; CHECK-NEXT:    [[T12:%.*]] = load i32, ptr [[ARRAYIDX15]], align 4 | 
|  | ; CHECK-NEXT:    [[ADD16]] = add nsw i32 [[ADD11]], [[T12]] | 
|  | ; CHECK-NEXT:    [[INDVARS_IV_NEXT]] = add nuw nsw i32 [[INDVARS_IV]], 1 | 
|  | ; CHECK-NEXT:    [[EXITCOND:%.*]] = icmp eq i32 [[INDVARS_IV_NEXT]], [[N]] | 
|  | ; CHECK-NEXT:    br i1 [[EXITCOND]], label [[FOR_COND_CLEANUP_LOOPEXIT]], label [[FOR_BODY]] | 
|  | ; | 
|  | entry: | 
|  | %cmp31 = icmp sgt i32 %n, 0 | 
|  | br i1 %cmp31, label %for.body.preheader, label %for.cond.cleanup | 
|  |  | 
|  | for.body.preheader: | 
|  | br label %for.body | 
|  |  | 
|  | for.cond.cleanup.loopexit: | 
|  | br label %for.cond.cleanup | 
|  |  | 
|  | for.cond.cleanup: | 
|  | %sum.0.lcssa = phi i32 [ 0, %entry ], [ %add16, %for.cond.cleanup.loopexit ] | 
|  | ret i32 %sum.0.lcssa | 
|  |  | 
|  | for.body: | 
|  | %indvars.iv = phi i32 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ] | 
|  | %sum.032 = phi i32 [ 0, %for.body.preheader ], [ %add16, %for.body ] | 
|  | %t4 = shl nsw i32 %indvars.iv, 1 | 
|  | %t5 = add nsw i32 %t4, 0 | 
|  | %arrayidx = getelementptr inbounds i32, ptr %g, i32 %t5 | 
|  | %t6 = load i32, ptr %arrayidx, align 4 | 
|  | %add1 = add nsw i32 %t6, %sum.032 | 
|  | %t7 = add nsw i32 %t4, 1 | 
|  | %arrayidx5 = getelementptr inbounds i32, ptr %g, i32 %t7 | 
|  | %t8 = load i32, ptr %arrayidx5, align 4 | 
|  | %add6 = add nsw i32 %add1, %t8 | 
|  | %t9 = add nsw i32 %t4, %y | 
|  | %arrayidx10 = getelementptr inbounds i32, ptr %g, i32 %t9 | 
|  | %t10 = load i32, ptr %arrayidx10, align 4 | 
|  | %add11 = add nsw i32 %add6, %t10 | 
|  | %t11 = add nsw i32 %t4, %z | 
|  | %arrayidx15 = getelementptr inbounds i32, ptr %g, i32 %t11 | 
|  | %t12 = load i32, ptr %arrayidx15, align 4 | 
|  | %add16 = add nsw i32 %add11, %t12 | 
|  | %indvars.iv.next = add nuw nsw i32 %indvars.iv, 1 | 
|  | %exitcond = icmp eq i32 %indvars.iv.next , %n | 
|  | br i1 %exitcond, label %for.cond.cleanup.loopexit, label %for.body | 
|  | } |