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; RUN: opt < %s -S -passes=loop-unroll -pass-remarks=loop-unroll -unroll-count=16 2>&1 | FileCheck -check-prefix=COMPLETE-UNROLL %s
; RUN: opt < %s -S -passes=loop-unroll -pass-remarks=loop-unroll -unroll-count=4 2>&1 | FileCheck -check-prefix=PARTIAL-UNROLL %s
; RUN: opt < %s -S -passes=loop-unroll -pass-remarks=loop-unroll -unroll-count=4 -unroll-runtime=true -unroll-remainder 2>&1 | FileCheck %s --check-prefix=RUNTIME-UNROLL
; COMPLETE-UNROLL: remark: {{.*}}: completely unrolled loop with 16 iterations
; PARTIAL-UNROLL: remark: {{.*}}: unrolled loop by a factor of 4
; RUNTIME-UNROLL: remark: {{.*}}: unrolled loop by a factor of 4
define i32 @sum() {
entry:
br label %for.body
for.body: ; preds = %for.body, %entry
%s.06 = phi i32 [ 0, %entry ], [ %add1, %for.body ]
%i.05 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
%add = add nsw i32 %i.05, 4
%call = tail call i32 @baz(i32 %add) #2
%add1 = add nsw i32 %call, %s.06
%inc = add nsw i32 %i.05, 1
%exitcond = icmp eq i32 %inc, 16
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body
ret i32 %add1
}
; RUNTIME-UNROLL-NOT: remark: {{.*}}: completely unrolled loop with 3 iterations
; RUNTIME-UNROLL: remark: {{.*}}: unrolled loop by a factor of 4
define i32 @runtime(i32 %n) {
entry:
br label %for.body
for.body: ; preds = %for.body, %entry
%s.06 = phi i32 [ 0, %entry ], [ %add1, %for.body ]
%i.05 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
%add = add nsw i32 %i.05, 4
%call = tail call i32 @baz(i32 %add) #2
%add1 = add nsw i32 %call, %s.06
%inc = add nsw i32 %i.05, 1
%exitcond = icmp eq i32 %inc, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body
ret i32 %add1
}
declare i32 @baz(i32)
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