forked from OSchip/llvm-project
26 lines
963 B
LLVM
26 lines
963 B
LLVM
|
; RUN: opt < %s -S -loop-unroll -pass-remarks=loop-unroll -unroll-count=16 2>&1 | FileCheck -check-prefix=COMPLETE-UNROLL %s
|
||
|
|
; RUN: opt < %s -S -loop-unroll -pass-remarks=loop-unroll -unroll-count=4 2>&1 | FileCheck -check-prefix=PARTIAL-UNROLL %s
|
||
|
|
|
||
|
|
; COMPLETE-UNROLL: remark: {{.*}}: completely unrolled loop with 16 iterations
|
||
|
|
; PARTIAL-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
|
||
|
|
}
|
||
|
|
|
||
|
|
declare i32 @baz(i32)
|