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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
; RUN: opt -S -passes=loop-unroll -unroll-runtime %s | FileCheck %s
define i32 @pr131465(i1 %x) mustprogress {
; CHECK-LABEL: define i32 @pr131465(
; CHECK-SAME: i1 [[X:%.*]]) #[[ATTR0:[0-9]+]] {
; CHECK-NEXT: [[ENTRY:.*]]:
; CHECK-NEXT: [[INC:%.*]] = zext i1 [[X]] to i32
; CHECK-NEXT: br label %[[FOR_BODY:.*]]
; CHECK: [[FOR_BODY]]:
; CHECK-NEXT: [[INDVAR:%.*]] = phi i32 [ 2, %[[ENTRY]] ], [ [[NEXT_1:%.*]], %[[FOR_BODY_1:.*]] ]
; CHECK-NEXT: [[NEXT:%.*]] = add nsw i32 [[INDVAR]], [[INC]]
; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i32 [[NEXT]], 2
; CHECK-NEXT: br i1 [[EXITCOND]], label %[[FOR_END:.*]], label %[[FOR_BODY_1]], !llvm.loop [[LOOP0:![0-9]+]]
; CHECK: [[FOR_BODY_1]]:
; CHECK-NEXT: [[NEXT_1]] = add nsw i32 [[NEXT]], [[INC]]
; CHECK-NEXT: [[EXITCOND_1:%.*]] = icmp eq i32 [[NEXT_1]], 2
; CHECK-NEXT: br i1 [[EXITCOND_1]], label %[[FOR_END]], label %[[FOR_BODY]], !llvm.loop [[LOOP2:![0-9]+]]
; CHECK: [[FOR_END]]:
; CHECK-NEXT: ret i32 0
;
entry:
%inc = zext i1 %x to i32
br label %for.body
for.body:
%indvar = phi i32 [ 2, %entry ], [ %next, %for.body ]
%next = add nsw i32 %indvar, %inc
%exitcond = icmp eq i32 %next, 2
br i1 %exitcond, label %for.end, label %for.body, !llvm.loop !0
for.end:
ret i32 0
}
; Force runtime unrolling.
!0 = !{!0, !{!"llvm.loop.unroll.count", i32 2}}
;.
; CHECK: [[LOOP0]] = distinct !{[[LOOP0]], [[META1:![0-9]+]]}
; CHECK: [[META1]] = !{!"llvm.loop.unroll.count", i32 2}
; CHECK: [[LOOP2]] = distinct !{[[LOOP2]], [[META3:![0-9]+]]}
; CHECK: [[META3]] = !{!"llvm.loop.unroll.disable"}
;.
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