forked from OSchip/llvm-project
235 lines
7.0 KiB
LLVM
235 lines
7.0 KiB
LLVM
; RUN: opt -S -loop-fusion < %s | FileCheck %s
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@B = common global [1024 x i32] zeroinitializer, align 16
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; CHECK: void @dep_free_parametric
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; CHECK-next: entry:
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; CHECK: br i1 %{{.*}}, label %[[LOOP1PREHEADER:bb[0-9]*]], label %[[LOOP1SUCC:bb[0-9]+]]
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; CHECK: [[LOOP1PREHEADER]]
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; CHECK-NEXT: br label %[[LOOP1BODY:bb[0-9]*]]
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; CHECK: [[LOOP1BODY]]
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; CHECK: br i1 %{{.*}}, label %[[LOOP1BODY]], label %[[LOOP2EXIT:bb[0-9]+]]
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; CHECK: [[LOOP2EXIT]]
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; CHECK: br label %[[LOOP1SUCC]]
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; CHECK: [[LOOP1SUCC]]
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; CHECK: ret void
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define void @dep_free_parametric(i32* noalias %A, i64 %N) {
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entry:
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%cmp4 = icmp slt i64 0, %N
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br i1 %cmp4, label %bb3, label %bb14
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bb3: ; preds = %entry
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br label %bb5
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bb5: ; preds = %bb3, %bb5
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%i.05 = phi i64 [ %inc, %bb5 ], [ 0, %bb3 ]
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%sub = sub nsw i64 %i.05, 3
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%add = add nsw i64 %i.05, 3
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%mul = mul nsw i64 %sub, %add
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%rem = srem i64 %mul, %i.05
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%conv = trunc i64 %rem to i32
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%arrayidx = getelementptr inbounds i32, i32* %A, i64 %i.05
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store i32 %conv, i32* %arrayidx, align 4
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%inc = add nsw i64 %i.05, 1
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%cmp = icmp slt i64 %inc, %N
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br i1 %cmp, label %bb5, label %bb10
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bb10: ; preds = %bb5
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br label %bb14
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bb14: ; preds = %bb10, %entry
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%cmp31 = icmp slt i64 0, %N
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br i1 %cmp31, label %bb8, label %bb12
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bb8: ; preds = %bb14
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br label %bb9
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bb9: ; preds = %bb8, %bb9
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%i1.02 = phi i64 [ %inc14, %bb9 ], [ 0, %bb8 ]
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%sub7 = sub nsw i64 %i1.02, 3
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%add8 = add nsw i64 %i1.02, 3
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%mul9 = mul nsw i64 %sub7, %add8
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%rem10 = srem i64 %mul9, %i1.02
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%conv11 = trunc i64 %rem10 to i32
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%arrayidx12 = getelementptr inbounds [1024 x i32], [1024 x i32]* @B, i64 0, i64 %i1.02
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store i32 %conv11, i32* %arrayidx12, align 4
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%inc14 = add nsw i64 %i1.02, 1
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%cmp3 = icmp slt i64 %inc14, %N
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br i1 %cmp3, label %bb9, label %bb15
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bb15: ; preds = %bb9
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br label %bb12
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bb12: ; preds = %bb15, %bb14
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ret void
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}
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; Test that `%add` is moved in for.first.preheader, and the two loops for.first
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; and for.second are fused.
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; CHECK: void @moveinsts_preheader
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; CHECK-LABEL: for.first.guard:
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; CHECK: br i1 %cmp.guard, label %for.first.preheader, label %for.end
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; CHECK-LABEL: for.first.preheader:
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; CHECK-NEXT: %add = add nsw i32 %x, 1
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; CHECK-NEXT: br label %for.first
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; CHECK-LABEL: for.first:
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; CHECK: br i1 %cmp.j, label %for.first, label %for.second.exit
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; CHECK-LABEL: for.second.exit:
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; CHECK-NEXT: br label %for.end
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; CHECK-LABEL: for.end:
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; CHECK-NEXT: ret void
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define void @moveinsts_preheader(i32* noalias %A, i32* noalias %B, i64 %N, i32 %x) {
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for.first.guard:
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%cmp.guard = icmp slt i64 0, %N
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br i1 %cmp.guard, label %for.first.preheader, label %for.second.guard
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for.first.preheader:
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br label %for.first
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for.first:
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%i = phi i64 [ %inc.i, %for.first ], [ 0, %for.first.preheader ]
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%Ai = getelementptr inbounds i32, i32* %A, i64 %i
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store i32 0, i32* %Ai, align 4
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%inc.i = add nsw i64 %i, 1
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%cmp.i = icmp slt i64 %inc.i, %N
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br i1 %cmp.i, label %for.first, label %for.first.exit
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for.first.exit:
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br label %for.second.guard
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for.second.guard:
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br i1 %cmp.guard, label %for.second.preheader, label %for.end
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for.second.preheader:
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%add = add nsw i32 %x, 1
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br label %for.second
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for.second:
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%j = phi i64 [ %inc.j, %for.second ], [ 0, %for.second.preheader ]
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%Bj = getelementptr inbounds i32, i32* %B, i64 %j
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store i32 0, i32* %Bj, align 4
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%inc.j = add nsw i64 %j, 1
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%cmp.j = icmp slt i64 %inc.j, %N
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br i1 %cmp.j, label %for.second, label %for.second.exit
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for.second.exit:
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br label %for.end
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for.end:
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ret void
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}
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; Test that `%add` is moved in for.second.exit, and the two loops for.first
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; and for.second are fused.
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; CHECK: void @moveinsts_exitblock
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; CHECK-LABEL: for.first.guard:
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; CHECK: br i1 %cmp.guard, label %for.first.preheader, label %for.end
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; CHECK-LABEL: for.first.preheader:
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; CHECK-NEXT: br label %for.first
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; CHECK-LABEL: for.first:
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; CHECK: br i1 %cmp.j, label %for.first, label %for.second.exit
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; CHECK-LABEL: for.second.exit:
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; CHECK-NEXT: %add = add nsw i32 %x, 1
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; CHECK-NEXT: br label %for.end
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; CHECK-LABEL: for.end:
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; CHECK-NEXT: ret void
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define void @moveinsts_exitblock(i32* noalias %A, i32* noalias %B, i64 %N, i32 %x) {
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for.first.guard:
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%cmp.guard = icmp slt i64 0, %N
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br i1 %cmp.guard, label %for.first.preheader, label %for.second.guard
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for.first.preheader:
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br label %for.first
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for.first:
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%i.04 = phi i64 [ %inc, %for.first ], [ 0, %for.first.preheader ]
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%arrayidx = getelementptr inbounds i32, i32* %A, i64 %i.04
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store i32 0, i32* %arrayidx, align 4
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%inc = add nsw i64 %i.04, 1
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%cmp = icmp slt i64 %inc, %N
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br i1 %cmp, label %for.first, label %for.first.exit
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for.first.exit:
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%add = add nsw i32 %x, 1
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br label %for.second.guard
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for.second.guard:
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br i1 %cmp.guard, label %for.second.preheader, label %for.end
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for.second.preheader:
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br label %for.second
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for.second:
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%j.02 = phi i64 [ %inc6, %for.second ], [ 0, %for.second.preheader ]
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%arrayidx4 = getelementptr inbounds i32, i32* %B, i64 %j.02
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store i32 0, i32* %arrayidx4, align 4
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%inc6 = add nsw i64 %j.02, 1
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%cmp.j = icmp slt i64 %inc6, %N
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br i1 %cmp.j, label %for.second, label %for.second.exit
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for.second.exit:
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br label %for.end
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for.end:
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ret void
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}
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; Test that `%add` is moved in for.first.guard, and the two loops for.first
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; and for.second are fused.
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; CHECK: void @moveinsts_guardblock
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; CHECK-LABEL: for.first.guard:
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; CHECK-NEXT: %cmp.guard = icmp slt i64 0, %N
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; CHECK-NEXT: %add = add nsw i32 %x, 1
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; CHECK: br i1 %cmp.guard, label %for.first.preheader, label %for.end
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; CHECK-LABEL: for.first.preheader:
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; CHECK-NEXT: br label %for.first
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; CHECK-LABEL: for.first:
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; CHECK: br i1 %cmp.j, label %for.first, label %for.second.exit
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; CHECK-LABEL: for.second.exit:
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; CHECK-NEXT: br label %for.end
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; CHECK-LABEL: for.end:
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; CHECK-NEXT: ret void
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define void @moveinsts_guardblock(i32* noalias %A, i32* noalias %B, i64 %N, i32 %x) {
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for.first.guard:
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%cmp.guard = icmp slt i64 0, %N
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br i1 %cmp.guard, label %for.first.preheader, label %for.second.guard
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for.first.preheader:
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br label %for.first
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for.first:
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%i.04 = phi i64 [ %inc, %for.first ], [ 0, %for.first.preheader ]
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%arrayidx = getelementptr inbounds i32, i32* %A, i64 %i.04
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store i32 0, i32* %arrayidx, align 4
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%inc = add nsw i64 %i.04, 1
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%cmp = icmp slt i64 %inc, %N
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br i1 %cmp, label %for.first, label %for.first.exit
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for.first.exit:
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br label %for.second.guard
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for.second.guard:
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%add = add nsw i32 %x, 1
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br i1 %cmp.guard, label %for.second.preheader, label %for.end
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for.second.preheader:
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br label %for.second
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for.second:
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%j.02 = phi i64 [ %inc6, %for.second ], [ 0, %for.second.preheader ]
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%arrayidx4 = getelementptr inbounds i32, i32* %B, i64 %j.02
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store i32 0, i32* %arrayidx4, align 4
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%inc6 = add nsw i64 %j.02, 1
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%cmp.j = icmp slt i64 %inc6, %N
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br i1 %cmp.j, label %for.second, label %for.second.exit
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for.second.exit:
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br label %for.end
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for.end:
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ret void
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}
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