1 files changed, 0 insertions, 371 deletions
diff --git a/llvm/test/Transforms/LoopFusion/cannot_fuse.ll b/llvm/test/Transforms/LoopFusion/cannot_fuse.ll
deleted file mode 100644
index d742a5b03d5..00000000000
--- a/llvm/test/Transforms/LoopFusion/cannot_fuse.ll
+++ /dev/null
@@ -1,371 +0,0 @@
-; RUN: opt -S -loop-fusion -debug-only=loop-fusion -disable-output < %s 2>&1 | FileCheck %s
-; REQUIRES: asserts
-
-@B = common global [1024 x i32] zeroinitializer, align 16
-
-; CHECK that the two candidates for fusion are placed into separate candidate
-; sets because they are not control flow equivalent.
-
-; CHECK: Performing Loop Fusion on function non_cfe
-; CHECK: Fusion Candidates:
-; CHECK: *** Fusion Candidate Set ***
-; CHECK: bb
-; CHECK: ****************************
-; CHECK: *** Fusion Candidate Set ***
-; CHECK: bb20.preheader
-; CHECK: ****************************
-; CHECK: Loop Fusion complete
-define void @non_cfe(i32* noalias %arg) {
-bb:
-  br label %bb5
-
-bb5:                                              ; preds = %bb14, %bb
-  %indvars.iv2 = phi i64 [ %indvars.iv.next3, %bb14 ], [ 0, %bb ]
-  %.01 = phi i32 [ 0, %bb ], [ %tmp15, %bb14 ]
-  %exitcond4 = icmp ne i64 %indvars.iv2, 100
-  br i1 %exitcond4, label %bb7, label %bb16
-
-bb7:                                              ; preds = %bb5
-  %tmp = add nsw i32 %.01, -3
-  %tmp8 = add nuw nsw i64 %indvars.iv2, 3
-  %tmp9 = trunc i64 %tmp8 to i32
-  %tmp10 = mul nsw i32 %tmp, %tmp9
-  %tmp11 = trunc i64 %indvars.iv2 to i32
-  %tmp12 = srem i32 %tmp10, %tmp11
-  %tmp13 = getelementptr inbounds i32, i32* %arg, i64 %indvars.iv2
-  store i32 %tmp12, i32* %tmp13, align 4
-  br label %bb14
-
-bb14:                                             ; preds = %bb7
-  %indvars.iv.next3 = add nuw nsw i64 %indvars.iv2, 1
-  %tmp15 = add nuw nsw i32 %.01, 1
-  br label %bb5
-
-bb16:                                             ; preds = %bb5
-  %tmp17 = load i32, i32* %arg, align 4
-  %tmp18 = icmp slt i32 %tmp17, 0
-  br i1 %tmp18, label %bb20, label %bb33
-
-bb20:                                             ; preds = %bb30, %bb16
-  %indvars.iv = phi i64 [ %indvars.iv.next, %bb30 ], [ 0, %bb16 ]
-  %.0 = phi i32 [ 0, %bb16 ], [ %tmp31, %bb30 ]
-  %exitcond = icmp ne i64 %indvars.iv, 100
-  br i1 %exitcond, label %bb22, label %bb33
-
-bb22:                                             ; preds = %bb20
-  %tmp23 = add nsw i32 %.0, -3
-  %tmp24 = add nuw nsw i64 %indvars.iv, 3
-  %tmp25 = trunc i64 %tmp24 to i32
-  %tmp26 = mul nsw i32 %tmp23, %tmp25
-  %tmp27 = trunc i64 %indvars.iv to i32
-  %tmp28 = srem i32 %tmp26, %tmp27
-  %tmp29 = getelementptr inbounds [1024 x i32], [1024 x i32]* @B, i64 0, i64 %indvars.iv
-  store i32 %tmp28, i32* %tmp29, align 4
-  br label %bb30
-
-bb30:                                             ; preds = %bb22
-  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
-  %tmp31 = add nuw nsw i32 %.0, 1
-  br label %bb20
-
-bb33:                                             ; preds = %bb20, %bb16
-  ret void
-}
-
-; Check that fusion detects the two canddates are not adjacent (the exit block
-; of the first candidate is not the preheader of the second candidate).
-
-; CHECK: Performing Loop Fusion on function non_adjacent
-; CHECK: Fusion Candidates:
-; CHECK: *** Fusion Candidate Set ***
-; CHECK-NEXT: [[LOOP1PREHEADER:bb[0-9]*]]
-; CHECK-NEXT: [[LOOP2PREHEADER:bb[0-9]*]]
-; CHECK-NEXT: ****************************
-; CHECK: Attempting fusion on Candidate Set:
-; CHECK-NEXT: [[LOOP1PREHEADER]]
-; CHECK-NEXT: [[LOOP2PREHEADER]]
-; CHECK: Fusion candidates are not adjacent. Not fusing.
-; CHECK: Loop Fusion complete
-define void @non_adjacent(i32* noalias %arg) {
-bb:
-  br label %bb3
-
-bb3:                                              ; preds = %bb11, %bb
-  %.01 = phi i64 [ 0, %bb ], [ %tmp12, %bb11 ]
-  %exitcond2 = icmp ne i64 %.01, 100
-  br i1 %exitcond2, label %bb5, label %bb4
-
-bb4:                                              ; preds = %bb3
-  br label %bb13
-
-bb5:                                              ; preds = %bb3
-  %tmp = add nsw i64 %.01, -3
-  %tmp6 = add nuw nsw i64 %.01, 3
-  %tmp7 = mul nsw i64 %tmp, %tmp6
-  %tmp8 = srem i64 %tmp7, %.01
-  %tmp9 = trunc i64 %tmp8 to i32
-  %tmp10 = getelementptr inbounds i32, i32* %arg, i64 %.01
-  store i32 %tmp9, i32* %tmp10, align 4
-  br label %bb11
-
-bb11:                                             ; preds = %bb5
-  %tmp12 = add nuw nsw i64 %.01, 1
-  br label %bb3
-
-bb13:                                             ; preds = %bb4
-  br label %bb14
-
-bb14:                                             ; preds = %bb23, %bb13
-  %.0 = phi i64 [ 0, %bb13 ], [ %tmp24, %bb23 ]
-  %exitcond = icmp ne i64 %.0, 100
-  br i1 %exitcond, label %bb16, label %bb15
-
-bb15:                                             ; preds = %bb14
-  br label %bb25
-
-bb16:                                             ; preds = %bb14
-  %tmp17 = add nsw i64 %.0, -3
-  %tmp18 = add nuw nsw i64 %.0, 3
-  %tmp19 = mul nsw i64 %tmp17, %tmp18
-  %tmp20 = srem i64 %tmp19, %.0
-  %tmp21 = trunc i64 %tmp20 to i32
-  %tmp22 = getelementptr inbounds [1024 x i32], [1024 x i32]* @B, i64 0, i64 %.0
-  store i32 %tmp21, i32* %tmp22, align 4
-  br label %bb23
-
-bb23:                                             ; preds = %bb16
-  %tmp24 = add nuw nsw i64 %.0, 1
-  br label %bb14
-
-bb25:                                             ; preds = %bb15
-  ret void
-}
-
-; Check that the different bounds are detected and prevent fusion.
-
-; CHECK: Performing Loop Fusion on function different_bounds
-; CHECK: Fusion Candidates:
-; CHECK: *** Fusion Candidate Set ***
-; CHECK-NEXT: [[LOOP1PREHEADER:bb[0-9]*]]
-; CHECK-NEXT: [[LOOP2PREHEADER:bb[0-9]*]]
-; CHECK-NEXT: ****************************
-; CHECK: Attempting fusion on Candidate Set:
-; CHECK-NEXT: [[LOOP1PREHEADER]]
-; CHECK-NEXT: [[LOOP2PREHEADER]]
-; CHECK: Fusion candidates do not have identical trip counts. Not fusing.
-; CHECK: Loop Fusion complete
-define void @different_bounds(i32* noalias %arg) {
-bb:
-  br label %bb3
-
-bb3:                                              ; preds = %bb11, %bb
-  %.01 = phi i64 [ 0, %bb ], [ %tmp12, %bb11 ]
-  %exitcond2 = icmp ne i64 %.01, 100
-  br i1 %exitcond2, label %bb5, label %bb4
-
-bb4:                                              ; preds = %bb3
-  br label %bb13
-
-bb5:                                              ; preds = %bb3
-  %tmp = add nsw i64 %.01, -3
-  %tmp6 = add nuw nsw i64 %.01, 3
-  %tmp7 = mul nsw i64 %tmp, %tmp6
-  %tmp8 = srem i64 %tmp7, %.01
-  %tmp9 = trunc i64 %tmp8 to i32
-  %tmp10 = getelementptr inbounds i32, i32* %arg, i64 %.01
-  store i32 %tmp9, i32* %tmp10, align 4
-  br label %bb11
-
-bb11:                                             ; preds = %bb5
-  %tmp12 = add nuw nsw i64 %.01, 1
-  br label %bb3
-
-bb13:                                             ; preds = %bb4
-  br label %bb14
-
-bb14:                                             ; preds = %bb23, %bb13
-  %.0 = phi i64 [ 0, %bb13 ], [ %tmp24, %bb23 ]
-  %exitcond = icmp ne i64 %.0, 200
-  br i1 %exitcond, label %bb16, label %bb15
-
-bb15:                                             ; preds = %bb14
-  br label %bb25
-
-bb16:                                             ; preds = %bb14
-  %tmp17 = add nsw i64 %.0, -3
-  %tmp18 = add nuw nsw i64 %.0, 3
-  %tmp19 = mul nsw i64 %tmp17, %tmp18
-  %tmp20 = srem i64 %tmp19, %.0
-  %tmp21 = trunc i64 %tmp20 to i32
-  %tmp22 = getelementptr inbounds [1024 x i32], [1024 x i32]* @B, i64 0, i64 %.0
-  store i32 %tmp21, i32* %tmp22, align 4
-  br label %bb23
-
-bb23:                                             ; preds = %bb16
-  %tmp24 = add nuw nsw i64 %.0, 1
-  br label %bb14
-
-bb25:                                             ; preds = %bb15
-  ret void
-}
-
-; Check that the negative dependence between the two candidates is identified
-; and prevents fusion.
-
-; CHECK: Performing Loop Fusion on function negative_dependence
-; CHECK: Fusion Candidates:
-; CHECK: *** Fusion Candidate Set ***
-; CHECK-NEXT: [[LOOP1PREHEADER:bb[0-9]*]]
-; CHECK-NEXT: [[LOOP2PREHEADER:bb[0-9]*]]
-; CHECK-NEXT: ****************************
-; CHECK: Attempting fusion on Candidate Set:
-; CHECK-NEXT: [[LOOP1PREHEADER]]
-; CHECK-NEXT: [[LOOP2PREHEADER]]
-; CHECK: Memory dependencies do not allow fusion!
-; CHECK: Loop Fusion complete
-define void @negative_dependence(i32* noalias %arg) {
-bb:
-  br label %bb5
-
-bb5:                                              ; preds = %bb9, %bb
-  %indvars.iv2 = phi i64 [ %indvars.iv.next3, %bb9 ], [ 0, %bb ]
-  %exitcond4 = icmp ne i64 %indvars.iv2, 100
-  br i1 %exitcond4, label %bb7, label %bb11
-
-bb7:                                              ; preds = %bb5
-  %tmp = getelementptr inbounds i32, i32* %arg, i64 %indvars.iv2
-  %tmp8 = trunc i64 %indvars.iv2 to i32
-  store i32 %tmp8, i32* %tmp, align 4
-  br label %bb9
-
-bb9:                                              ; preds = %bb7
-  %indvars.iv.next3 = add nuw nsw i64 %indvars.iv2, 1
-  br label %bb5
-
-bb11:                                             ; preds = %bb18, %bb5
-  %indvars.iv = phi i64 [ %indvars.iv.next, %bb18 ], [ 0, %bb5 ]
-  %exitcond = icmp ne i64 %indvars.iv, 100
-  br i1 %exitcond, label %bb13, label %bb19
-
-bb13:                                             ; preds = %bb11
-  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
-  %tmp14 = getelementptr inbounds i32, i32* %arg, i64 %indvars.iv.next
-  %tmp15 = load i32, i32* %tmp14, align 4
-  %tmp16 = shl nsw i32 %tmp15, 1
-  %tmp17 = getelementptr inbounds [1024 x i32], [1024 x i32]* @B, i64 0, i64 %indvars.iv
-  store i32 %tmp16, i32* %tmp17, align 4
-  br label %bb18
-
-bb18:                                             ; preds = %bb13
-  br label %bb11
-
-bb19:                                             ; preds = %bb11
-  ret void
-}
-
-; Check for values defined in Loop 0 and used in Loop 1.
-; It is not safe to fuse in this case, because the second loop has
-; a use of %.01.lcssa which is defined in the body of loop 0. The
-; first loop must execute completely in order to compute the correct
-; value of %.01.lcssa to be used in the second loop.
-
-; CHECK: Performing Loop Fusion on function sumTest
-; CHECK: Fusion Candidates:
-; CHECK: *** Fusion Candidate Set ***
-; CHECK-NEXT: [[LOOP1PREHEADER:bb[0-9]*]]
-; CHECK-NEXT: [[LOOP2PREHEADER:bb[0-9]*]]
-; CHECK-NEXT: ****************************
-; CHECK: Attempting fusion on Candidate Set:
-; CHECK-NEXT: [[LOOP1PREHEADER]]
-; CHECK-NEXT: [[LOOP2PREHEADER]]
-; CHECK: Memory dependencies do not allow fusion!
-; CHECK: Loop Fusion complete
-define i32 @sumTest(i32* noalias %arg) {
-bb:
-  br label %bb6
-
-bb6:                                              ; preds = %bb9, %bb
-  %indvars.iv3 = phi i64 [ %indvars.iv.next4, %bb9 ], [ 0, %bb ]
-  %.01 = phi i32 [ 0, %bb ], [ %tmp11, %bb9 ]
-  %exitcond5 = icmp ne i64 %indvars.iv3, 100
-  br i1 %exitcond5, label %bb9, label %bb13
-
-bb9:                                              ; preds = %bb6
-  %tmp = getelementptr inbounds i32, i32* %arg, i64 %indvars.iv3
-  %tmp10 = load i32, i32* %tmp, align 4
-  %tmp11 = add nsw i32 %.01, %tmp10
-  %indvars.iv.next4 = add nuw nsw i64 %indvars.iv3, 1
-  br label %bb6
-
-bb13:                                             ; preds = %bb20, %bb6
-  %.01.lcssa = phi i32 [ %.01, %bb6 ], [ %.01.lcssa, %bb20 ]
-  %indvars.iv = phi i64 [ %indvars.iv.next, %bb20 ], [ 0, %bb6 ]
-  %exitcond = icmp ne i64 %indvars.iv, 100
-  br i1 %exitcond, label %bb15, label %bb14
-
-bb14:                                             ; preds = %bb13
-  br label %bb21
-
-bb15:                                             ; preds = %bb13
-  %tmp16 = getelementptr inbounds i32, i32* %arg, i64 %indvars.iv
-  %tmp17 = load i32, i32* %tmp16, align 4
-  %tmp18 = sdiv i32 %tmp17, %.01.lcssa
-  %tmp19 = getelementptr inbounds [1024 x i32], [1024 x i32]* @B, i64 0, i64 %indvars.iv
-  store i32 %tmp18, i32* %tmp19, align 4
-  br label %bb20
-
-bb20:                                             ; preds = %bb15
-  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
-  br label %bb13
-
-bb21:                                             ; preds = %bb14
-  ret i32 %.01.lcssa
-}
-
-; Similar to sumTest above. The first loop computes %add and must
-; complete before it is used in the second loop. Thus, these two loops
-; also cannot be fused.
-
-; CHECK: Performing Loop Fusion on function test
-; CHECK: Fusion Candidates:
-; CHECK: *** Fusion Candidate Set ***
-; CHECK-NEXT: [[LOOP1PREHEADER:for.body[0-9]*.preheader]]
-; CHECK-NEXT: [[LOOP2PREHEADER:for.body[0-9]*.preheader]]
-; CHECK-NEXT: ****************************
-; CHECK: Attempting fusion on Candidate Set:
-; CHECK-NEXT: [[LOOP1PREHEADER]]
-; CHECK-NEXT: [[LOOP2PREHEADER]]
-; CHECK: Memory dependencies do not allow fusion!
-; CHECK: Loop Fusion complete
-define float @test(float* nocapture %a, i32 %n) {
-entry:
-  %conv = zext i32 %n to i64
-  %cmp32 = icmp eq i32 %n, 0
-  br i1 %cmp32, label %for.cond.cleanup7, label %for.body
-
-for.body:                                         ; preds = %for.body, %entry
-  %i.034 = phi i64 [ %inc, %for.body ], [ 0, %entry ]
-  %sum1.033 = phi float [ %add, %for.body ], [ 0.000000e+00, %entry ]
-  %idxprom = trunc i64 %i.034 to i32
-  %arrayidx = getelementptr inbounds float, float* %a, i32 %idxprom
-  %0 = load float, float* %arrayidx, align 4
-  %add = fadd float %sum1.033, %0
-  %inc = add nuw nsw i64 %i.034, 1
-  %cmp = icmp ult i64 %inc, %conv
-  br i1 %cmp, label %for.body, label %for.body8
-
-for.body8:                                        ; preds = %for.body, %for.body8
-  %i2.031 = phi i64 [ %inc14, %for.body8 ], [ 0, %for.body ]
-  %idxprom9 = trunc i64 %i2.031 to i32
-  %arrayidx10 = getelementptr inbounds float, float* %a, i32 %idxprom9
-  %1 = load float, float* %arrayidx10, align 4
-  %div = fdiv float %1, %add
-  store float %div, float* %arrayidx10, align 4
-  %inc14 = add nuw nsw i64 %i2.031, 1
-  %cmp5 = icmp ult i64 %inc14, %conv
-  br i1 %cmp5, label %for.body8, label %for.cond.cleanup7
-
-for.cond.cleanup7:                                ; preds = %for.body8, %entry
-  %sum1.0.lcssa36 = phi float [ 0.000000e+00, %entry ], [ %add, %for.body8 ]
-  ret float %sum1.0.lcssa36
-}