1; RUN: opt -passes=hotcoldsplit -hotcoldsplit-threshold=-1 -S < %s | FileCheck %s 2 3target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 4target triple = "x86_64-apple-macosx10.14.0" 5 6@c = common global i32 0, align 4 7@h = common global i32 0, align 4 8 9declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0 10declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0 11declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #1 12 13declare ptr @m() 14 15; CHECK-LABEL: define void @main() 16; CHECK-NEXT: bb: 17; CHECK-NEXT: %.sroa.4.i = alloca [20 x i8], align 2 18; CHECK-NEXT: %.sroa.5.i = alloca [6 x i8], align 8 19 20define void @main() #2 { 21bb: 22 %.sroa.4.i = alloca [20 x i8], align 2 23 %.sroa.5.i = alloca [6 x i8], align 8 24 %i1 = load i32, ptr @h, align 4, !tbaa !4 25 %i2 = icmp ne i32 %i1, 0 26 br i1 %i2, label %bb11, label %bb3 27 28bb3: ; preds = %bb 29 %i4 = call ptr @m() 30 call void @llvm.lifetime.start.p0(i64 20, ptr %.sroa.4.i) 31 call void @llvm.lifetime.start.p0(i64 6, ptr %.sroa.5.i) 32 call void @llvm.memset.p0.i64(ptr align 2 %.sroa.4.i, i8 0, i64 20, i1 false) 33 call void @llvm.memset.p0.i64(ptr align 8 %.sroa.5.i, i8 0, i64 6, i1 false) 34 %i5 = load i32, ptr @c, align 4, !tbaa !4 35 %i6 = trunc i32 %i5 to i16 36 call void @llvm.lifetime.end.p0(i64 20, ptr %.sroa.4.i) 37 call void @llvm.lifetime.end.p0(i64 6, ptr %.sroa.5.i) 38 call void @llvm.lifetime.start.p0(i64 6, ptr %.sroa.5.i) 39 call void @llvm.memset.p0.i64(ptr align 1 %.sroa.5.i, i8 3, i64 6, i1 false) 40 br label %bb7 41 42bb7: ; preds = %bb7, %bb3 43 %.0.i = phi i32 [ 0, %bb3 ], [ %i9, %bb7 ] 44 %i8 = sext i32 %.0.i to i64 45 %i9 = add nsw i32 %.0.i, 1 46 %i10 = icmp slt i32 %i9, 6 47 br i1 %i10, label %bb7, label %l.exit 48 49l.exit: ; preds = %bb7 50 call void @llvm.lifetime.end.p0(i64 6, ptr %.sroa.5.i) 51 br label %bb11 52 53bb11: ; preds = %l.exit, %bb 54 %i12 = phi i1 [ true, %bb ], [ true, %l.exit ] 55 ret void 56} 57 58attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) } 59attributes #1 = { nocallback nofree nounwind willreturn memory(argmem: write) } 60attributes #2 = { cold } 61 62!llvm.module.flags = !{!0, !1, !2} 63!llvm.ident = !{!3} 64 65!0 = !{i32 2, !"SDK Version", [2 x i32] [i32 10, i32 14]} 66!1 = !{i32 1, !"wchar_size", i32 4} 67!2 = !{i32 8, !"PIC Level", i32 2} 68!3 = !{!"Apple clang version 11.0.0 (clang-1100.0.20.17)"} 69!4 = !{!5, !5, i64 0} 70!5 = !{!"int", !6, i64 0} 71!6 = !{!"omnipotent char", !7, i64 0} 72!7 = !{!"Simple C/C++ TBAA"} 73