1; RUN: llc -mtriple=hexagon < %s | FileCheck %s 2 3; The early return is predicated, and the save-restore code is mixed together: 4; { 5; p0 = cmp.eq(r0, #0) 6; if (p0.new) r17:16 = memd(r29 + #0) 7; memd(r29+#0) = r17:16 8; } 9; { 10; if (p0) dealloc_return 11; } 12; The problem is that the load will execute before the store, clobbering the 13; pair r17:16. 14; 15; Check that the store and the load are not in the same packet. 16; CHECK: memd{{.*}} = r17:16 17; CHECK: } 18; CHECK: r17:16 = memd 19; CHECK-LABEL: LBB0_1: 20 21target triple = "hexagon" 22 23%struct.0 = type { ptr, ptr, ptr, ptr, ptr } 24%struct.1 = type { [60 x i8], i32, ptr } 25%struct.2 = type { i8, i8, i8, i8, %union.anon } 26%union.anon = type { ptr } 27%struct.3 = type { ptr, ptr } 28 29@var = external hidden unnamed_addr global ptr, align 4 30 31declare void @bar(ptr, i32) local_unnamed_addr #0 32 33define void @foo() local_unnamed_addr #1 { 34entry: 35 %.pr = load ptr, ptr @var, align 4, !tbaa !1 36 %cmp2 = icmp eq ptr %.pr, null 37 br i1 %cmp2, label %while.end, label %while.body.preheader 38 39while.body.preheader: ; preds = %entry 40 br label %while.body 41 42while.body: ; preds = %while.body.preheader, %while.body 43 %0 = phi ptr [ %4, %while.body ], [ %.pr, %while.body.preheader ] 44 %right = getelementptr inbounds %struct.0, ptr %0, i32 0, i32 4 45 %1 = bitcast ptr %right to ptr 46 %2 = load i32, ptr %1, align 4, !tbaa !5 47 %3 = bitcast ptr %0 to ptr 48 tail call void @bar(ptr %3, i32 20) #1 49 store i32 %2, ptr @var, align 4, !tbaa !1 50 %4 = inttoptr i32 %2 to ptr 51 %cmp = icmp eq i32 %2, 0 52 br i1 %cmp, label %while.end.loopexit, label %while.body 53 54while.end.loopexit: ; preds = %while.body 55 br label %while.end 56 57while.end: ; preds = %while.end.loopexit, %entry 58 ret void 59} 60 61attributes #0 = { optsize } 62attributes #1 = { nounwind optsize } 63 64!1 = !{!2, !2, i64 0} 65!2 = !{!"any pointer", !3, i64 0} 66!3 = !{!"omnipotent char", !4, i64 0} 67!4 = !{!"Simple C/C++ TBAA"} 68!5 = !{!6, !2, i64 16} 69!6 = !{!"0", !2, i64 0, !2, i64 4, !2, i64 8, !2, i64 12, !2, i64 16} 70