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; RUN: opt -S -loop-reroll %s | FileCheck %s
declare i32 @goo(i32, i32)
@buf = external global i8*
@aaa = global [16 x i8] c"\01\02\03\04\05\06\07\08\09\0A\0B\0C\0D\0E\0F\10", align 1
define i32 @test1(i32 %len) {
entry:
br label %while.body
while.body:
;CHECK-LABEL: while.body:
;CHECK-NEXT: %indvar = phi i64 [ %indvar.next, %while.body ], [ 0, %entry ]
;CHECK-NEXT: %sum44.020 = phi i64 [ 0, %entry ], [ %add, %while.body ]
;CHECK-NEXT: %0 = trunc i64 %indvar to i32
;CHECK-NEXT: %scevgep = getelementptr [16 x i8], [16 x i8]* @aaa, i64 0, i64 %indvar
;CHECK-NEXT: [[T2:%[0-9]+]] = load i8, i8* %scevgep, align 1
;CHECK-NEXT: %conv = zext i8 [[T2]] to i64
;CHECK-NEXT: %add = add i64 %conv, %sum44.020
;CHECK-NEXT: %indvar.next = add i64 %indvar, 1
;CHECK-NEXT: %exitcond = icmp eq i32 %0, 15
;CHECK-NEXT: br i1 %exitcond, label %while.end, label %while.body
%dec22 = phi i32 [ 4, %entry ], [ %dec, %while.body ]
%buf.021 = phi i8* [ getelementptr inbounds ([16 x i8], [16 x i8]* @aaa, i64 0, i64 0), %entry ], [ %add.ptr, %while.body ]
%sum44.020 = phi i64 [ 0, %entry ], [ %add9, %while.body ]
%0 = load i8, i8* %buf.021, align 1
%conv = zext i8 %0 to i64
%add = add i64 %conv, %sum44.020
%arrayidx1 = getelementptr inbounds i8, i8* %buf.021, i64 1
%1 = load i8, i8* %arrayidx1, align 1
%conv2 = zext i8 %1 to i64
%add3 = add i64 %add, %conv2
%arrayidx4 = getelementptr inbounds i8, i8* %buf.021, i64 2
%2 = load i8, i8* %arrayidx4, align 1
%conv5 = zext i8 %2 to i64
%add6 = add i64 %add3, %conv5
%arrayidx7 = getelementptr inbounds i8, i8* %buf.021, i64 3
%3 = load i8, i8* %arrayidx7, align 1
%conv8 = zext i8 %3 to i64
%add9 = add i64 %add6, %conv8
%add.ptr = getelementptr inbounds i8, i8* %buf.021, i64 4
%dec = add nsw i32 %dec22, -1
%tobool = icmp eq i32 %dec, 0
br i1 %tobool, label %while.end, label %while.body
while.end: ; preds = %while.body
%conv11 = trunc i64 %add9 to i32
%call = tail call i32 @goo(i32 0, i32 %conv11)
unreachable
}
define i32 @test2(i32 %N, i32* nocapture readonly %a, i32 %S) {
entry:
%cmp.9 = icmp sgt i32 %N, 0
br i1 %cmp.9, label %for.body.lr.ph, label %for.cond.cleanup
for.body.lr.ph:
br label %for.body
for.cond.for.cond.cleanup_crit_edge:
br label %for.cond.cleanup
for.cond.cleanup:
%S.addr.0.lcssa = phi i32 [ %add2, %for.cond.for.cond.cleanup_crit_edge ], [ %S, %entry ]
ret i32 %S.addr.0.lcssa
for.body:
;CHECK-LABEL: for.body:
;CHECK-NEXT: %indvar = phi i64 [ %indvar.next, %for.body ], [ 0, %for.body.lr.ph ]
;CHECK-NEXT: %S.addr.011 = phi i32 [ %S, %for.body.lr.ph ], [ %add, %for.body ]
;CHECK-NEXT: %4 = trunc i64 %indvar to i32
;CHECK-NEXT: %scevgep = getelementptr i32, i32* %a, i64 %indvar
;CHECK-NEXT: %5 = load i32, i32* %scevgep, align 4
;CHECK-NEXT: %add = add nsw i32 %5, %S.addr.011
;CHECK-NEXT: %indvar.next = add i64 %indvar, 1
;CHECK-NEXT: %exitcond = icmp eq i32 %4, %3
;CHECK-NEXT: br i1 %exitcond, label %for.cond.for.cond.cleanup_crit_edge, label %for.body
%i.012 = phi i32 [ 0, %for.body.lr.ph ], [ %add3, %for.body ]
%S.addr.011 = phi i32 [ %S, %for.body.lr.ph ], [ %add2, %for.body ]
%a.addr.010 = phi i32* [ %a, %for.body.lr.ph ], [ %incdec.ptr1, %for.body ]
%incdec.ptr = getelementptr inbounds i32, i32* %a.addr.010, i64 1
%0 = load i32, i32* %a.addr.010, align 4
%add = add nsw i32 %0, %S.addr.011
%incdec.ptr1 = getelementptr inbounds i32, i32* %a.addr.010, i64 2
%1 = load i32, i32* %incdec.ptr, align 4
%add2 = add nsw i32 %add, %1
%add3 = add nsw i32 %i.012, 2
%cmp = icmp slt i32 %add3, %N
br i1 %cmp, label %for.body, label %for.cond.for.cond.cleanup_crit_edge
}
define i32 @test3(i32* nocapture readonly %buf, i32 %len) #0 {
entry:
%cmp10 = icmp sgt i32 %len, 1
br i1 %cmp10, label %while.body.preheader, label %while.end
while.body.preheader: ; preds = %entry
br label %while.body
while.body: ; preds = %while.body.preheader, %while.body
;CHECK-LABEL: while.body:
;CHECK-NEXT: %indvar = phi i64 [ %indvar.next, %while.body ], [ 0, %while.body.preheader ]
;CHECK-NEXT: %S.012 = phi i32 [ %add, %while.body ], [ undef, %while.body.preheader ]
;CHECK-NEXT: %4 = trunc i64 %indvar to i32
;CHECK-NEXT: %5 = mul nsw i64 %indvar, -1
;CHECK-NEXT: %scevgep = getelementptr i32, i32* %buf, i64 %5
;CHECK-NEXT: %6 = load i32, i32* %scevgep, align 4
;CHECK-NEXT: %add = add nsw i32 %6, %S.012
;CHECK-NEXT: %indvar.next = add i64 %indvar, 1
;CHECK-NEXT: %exitcond = icmp eq i32 %4, %3
;CHECK-NEXT: br i1 %exitcond, label %while.end.loopexit, label %while.body
%i.013 = phi i32 [ %sub, %while.body ], [ %len, %while.body.preheader ]
%S.012 = phi i32 [ %add2, %while.body ], [ undef, %while.body.preheader ]
%buf.addr.011 = phi i32* [ %add.ptr, %while.body ], [ %buf, %while.body.preheader ]
%0 = load i32, i32* %buf.addr.011, align 4
%add = add nsw i32 %0, %S.012
%arrayidx1 = getelementptr inbounds i32, i32* %buf.addr.011, i64 -1
%1 = load i32, i32* %arrayidx1, align 4
%add2 = add nsw i32 %add, %1
%add.ptr = getelementptr inbounds i32, i32* %buf.addr.011, i64 -2
%sub = add nsw i32 %i.013, -2
%cmp = icmp sgt i32 %sub, 1
br i1 %cmp, label %while.body, label %while.end.loopexit
while.end.loopexit: ; preds = %while.body
br label %while.end
while.end: ; preds = %while.end.loopexit, %entry
%S.0.lcssa = phi i32 [ undef, %entry ], [ %add2, %while.end.loopexit ]
ret i32 %S.0.lcssa
}
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