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; RUN: opt %loadPolly -polly-opt-isl -polly-pragma-based-opts=1 -analyze < %s | FileCheck %s --match-full-lines
; RUN: opt %loadPolly -polly-opt-isl -polly-pragma-based-opts=0 -analyze < %s | FileCheck %s --check-prefix=OFF --match-full-lines
;
; Partial unroll by a factor of 4.
;
define void @func(i32 %n, double* noalias nonnull %A) {
entry:
br label %for
for:
%j = phi i32 [0, %entry], [%j.inc, %inc]
%j.cmp = icmp slt i32 %j, %n
br i1 %j.cmp, label %body, label %exit
body:
store double 42.0, double* %A
br label %inc
inc:
%j.inc = add nuw nsw i32 %j, 1
br label %for, !llvm.loop !2
exit:
br label %return
return:
ret void
}
!2 = distinct !{!2, !5}
!5 = !{!"llvm.loop.unroll.count", i4 4}
; CHECK-LABEL: Printing analysis 'Polly - Optimize schedule of SCoP' for region: 'for => return' in function 'func':
; CHECK: domain: "[n] -> { Stmt_body[i0] : 0 <= i0 < n }"
; CHECK: schedule: "[n] -> [{ Stmt_body[i0] -> [(i0 - (i0) mod 4)] }]"
; CHECK: sequence:
; CHECK-NEXT: - filter: "[n] -> { Stmt_body[i0] : (i0) mod 4 = 0 }"
; CHECK-NEXT: - filter: "[n] -> { Stmt_body[i0] : (-1 + i0) mod 4 = 0 }"
; CHECK-NEXT: - filter: "[n] -> { Stmt_body[i0] : (2 + i0) mod 4 = 0 }"
; CHECK-NEXT: - filter: "[n] -> { Stmt_body[i0] : (1 + i0) mod 4 = 0 }"
; OFF-LABEL: Printing analysis 'Polly - Optimize schedule of SCoP' for region: 'for => return' in function 'func':
; OFF-NEXT: Calculated schedule:
; OFF-NEXT: n/a
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