; Unroll count metadata should be replaced with unroll(disable). Vectorize
; metadata should be untouched.
;
-; CHECK-LABEL: @loop1(
+; CHECK-LABEL: @unroll_count_4(
; CHECK: br i1 {{.*}}, label {{.*}}, label {{.*}}, !llvm.loop ![[LOOP_1:.*]]
-define void @loop1(i32* nocapture %a) {
+define void @unroll_count_4(i32* nocapture %a) {
entry:
br label %for.body
; because the trip count is dynamic. The full unroll metadata should remain
; after unrolling.
;
-; CHECK-LABEL: @loop2(
+; CHECK-LABEL: @unroll_full(
; CHECK: br i1 {{.*}}, label {{.*}}, label {{.*}}, !llvm.loop ![[LOOP_2:.*]]
-define void @loop2(i32* nocapture %a, i32 %b) {
+define void @unroll_full(i32* nocapture %a, i32 %b) {
entry:
%cmp3 = icmp sgt i32 %b, 0
br i1 %cmp3, label %for.body, label %for.end, !llvm.loop !5
;
; Unroll metadata should not change.
;
-; CHECK-LABEL: @loop3(
+; CHECK-LABEL: @unroll_disable(
; CHECK: br i1 {{.*}}, label {{.*}}, label {{.*}}, !llvm.loop ![[LOOP_3:.*]]
-define void @loop3(i32* nocapture %a) {
+define void @unroll_disable(i32* nocapture %a) {
entry:
br label %for.body
!7 = metadata !{metadata !7, metadata !8}
!8 = metadata !{metadata !"llvm.loop.unroll.disable"}
+; This function contains two loops which share the same llvm.loop metadata node
+; with an llvm.loop.unroll.count 2 hint. Both loops should be unrolled. This
+; verifies that adding disable metadata to a loop after unrolling doesn't affect
+; other loops which previously shared the same llvm.loop metadata.
+;
+; CHECK-LABEL: @shared_metadata(
+; CHECK: store i32
+; CHECK: store i32
+; CHECK: br i1 {{.*}}, label {{.*}}, label {{.*}}, !llvm.loop ![[LOOP_4:.*]]
+; CHECK: store i32
+; CHECK: store i32
+; CHECK: br i1 {{.*}}, label {{.*}}, label {{.*}}, !llvm.loop ![[LOOP_5:.*]]
+define void @shared_metadata(i32* nocapture %List) #0 {
+entry:
+ br label %for.body3
+
+for.body3: ; preds = %for.body3, %entry
+ %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body3 ]
+ %arrayidx = getelementptr inbounds i32* %List, i64 %indvars.iv
+ %0 = load i32* %arrayidx, align 4
+ %add4 = add nsw i32 %0, 10
+ store i32 %add4, i32* %arrayidx, align 4
+ %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
+ %exitcond = icmp eq i64 %indvars.iv.next, 4
+ br i1 %exitcond, label %for.body3.1.preheader, label %for.body3, !llvm.loop !9
+
+for.body3.1.preheader: ; preds = %for.body3
+ br label %for.body3.1
+
+for.body3.1: ; preds = %for.body3.1.preheader, %for.body3.1
+ %indvars.iv.1 = phi i64 [ %1, %for.body3.1 ], [ 0, %for.body3.1.preheader ]
+ %1 = add nsw i64 %indvars.iv.1, 1
+ %arrayidx.1 = getelementptr inbounds i32* %List, i64 %1
+ %2 = load i32* %arrayidx.1, align 4
+ %add4.1 = add nsw i32 %2, 10
+ store i32 %add4.1, i32* %arrayidx.1, align 4
+ %exitcond.1 = icmp eq i64 %1, 4
+ br i1 %exitcond.1, label %for.inc5.1, label %for.body3.1, !llvm.loop !9
+
+for.inc5.1: ; preds = %for.body3.1
+ ret void
+}
+!9 = metadata !{metadata !9, metadata !10}
+!10 = metadata !{metadata !"llvm.loop.unroll.count", i32 2}
+
+
; CHECK: ![[LOOP_1]] = metadata !{metadata ![[LOOP_1]], metadata ![[VEC_ENABLE:.*]], metadata ![[WIDTH_8:.*]], metadata ![[UNROLL_DISABLE:.*]]}
; CHECK: ![[VEC_ENABLE]] = metadata !{metadata !"llvm.loop.vectorize.enable", i1 true}
; CHECK: ![[WIDTH_8]] = metadata !{metadata !"llvm.loop.vectorize.width", i32 8}
; CHECK: ![[LOOP_2]] = metadata !{metadata ![[LOOP_2]], metadata ![[UNROLL_FULL:.*]]}
; CHECK: ![[UNROLL_FULL]] = metadata !{metadata !"llvm.loop.unroll.full"}
; CHECK: ![[LOOP_3]] = metadata !{metadata ![[LOOP_3]], metadata ![[UNROLL_DISABLE:.*]]}
+; CHECK: ![[LOOP_4]] = metadata !{metadata ![[LOOP_4]], metadata ![[UNROLL_DISABLE:.*]]}
+; CHECK: ![[LOOP_5]] = metadata !{metadata ![[LOOP_5]], metadata ![[UNROLL_DISABLE:.*]]}