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| ; RUN: llc -march=hexagon -enable-pipeliner=true -stats -o /dev/null < %s \
; RUN: 2>&1 -pipeliner-experimental-cg=true | FileCheck %s --check-prefix=STATS
; REQUIRES: asserts
; Test that we do not schedule chained references too far apart,
; which enables the loop to be pipelined. In this test, the loop should
; not be pipelined when the chained references are constrained correctly.
; STATS-NOT: 1 pipeliner - Number of loops software pipelined
; Function Attrs: nounwind
define void @f0() #0 {
b0:
br label %b2
b1: ; preds = %b6
br label %b7
b2: ; preds = %b6, %b0
br label %b3
b3: ; preds = %b5, %b2
br i1 undef, label %b4, label %b5
b4: ; preds = %b3
br label %b5
b5: ; preds = %b4, %b3
br i1 undef, label %b3, label %b6
b6: ; preds = %b5
br i1 undef, label %b1, label %b2
b7: ; preds = %b7, %b1
%v0 = phi i32 [ 0, %b1 ], [ %v4, %b7 ]
%v1 = load i16, i16* undef, align 8, !tbaa !0
%v2 = icmp sgt i16 %v1, undef
%v3 = select i1 %v2, i16 4, i16 undef
store i16 %v3, i16* undef, align 2, !tbaa !0
store i16 -32768, i16* undef, align 2, !tbaa !0
%v4 = add i32 %v0, 1
%v5 = icmp eq i32 %v4, 5
br i1 %v5, label %b8, label %b7
b8: ; preds = %b7
br i1 undef, label %b9, label %b10
b9: ; preds = %b8
br label %b10
b10: ; preds = %b9, %b8
br i1 undef, label %b11, label %b12
b11: ; preds = %b10
unreachable
b12: ; preds = %b10
ret void
}
attributes #0 = { nounwind "target-cpu"="hexagonv55" }
!0 = !{!1, !1, i64 0}
!1 = !{!"short", !2}
!2 = !{!"omnipotent char", !3}
!3 = !{!"Simple C/C++ TBAA"}
|