1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; Checks that move-auto-init can move instruction passed unclobbering memory 3; instructions. 4; RUN: opt < %s -S -passes='move-auto-init' -verify-memoryssa | FileCheck %s 5 6target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" 7 8define i32 @foo(i32 noundef %0, i32 noundef %1, i32 noundef %2) #0 { 9; CHECK-LABEL: @foo( 10; CHECK-NEXT: [[TMP4:%.*]] = alloca [100 x i8], align 16 11; CHECK-NEXT: [[TMP5:%.*]] = alloca [2 x i8], align 1 12; CHECK-NEXT: [[TMP6:%.*]] = getelementptr inbounds [100 x i8], ptr [[TMP4]], i64 0, i64 0 13; CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 100, ptr nonnull [[TMP6]]) #[[ATTR3:[0-9]+]] 14; CHECK-NEXT: [[TMP7:%.*]] = getelementptr inbounds [2 x i8], ptr [[TMP5]], i64 0, i64 0 15; CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 2, ptr nonnull [[TMP7]]) #[[ATTR3]] 16; CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds [2 x i8], ptr [[TMP5]], i64 0, i64 1 17; CHECK-NEXT: [[TMP9:%.*]] = icmp eq i32 [[TMP1:%.*]], 0 18; CHECK-NEXT: br i1 [[TMP9]], label [[TMP15:%.*]], label [[TMP10:%.*]] 19; CHECK: 10: 20; CHECK-NEXT: call void @llvm.memset.p0.i64(ptr noundef nonnull align 16 dereferenceable(100) [[TMP6]], i8 -86, i64 100, i1 false), !annotation !0 21; CHECK-NEXT: [[TMP11:%.*]] = sext i32 [[TMP0:%.*]] to i64 22; CHECK-NEXT: [[TMP12:%.*]] = getelementptr inbounds [100 x i8], ptr [[TMP4]], i64 0, i64 [[TMP11]] 23; CHECK-NEXT: store i8 12, ptr [[TMP12]], align 1 24; CHECK-NEXT: [[TMP13:%.*]] = load i8, ptr [[TMP6]], align 16 25; CHECK-NEXT: [[TMP14:%.*]] = sext i8 [[TMP13]] to i32 26; CHECK-NEXT: br label [[TMP22:%.*]] 27; CHECK: 15: 28; CHECK-NEXT: [[TMP16:%.*]] = icmp eq i32 [[TMP2:%.*]], 0 29; CHECK-NEXT: br i1 [[TMP16]], label [[TMP22]], label [[TMP17:%.*]] 30; CHECK: 17: 31; CHECK-NEXT: store i8 -86, ptr [[TMP7]], align 1, !annotation !0 32; CHECK-NEXT: store i8 -86, ptr [[TMP8]], align 1, !annotation !0 33; CHECK-NEXT: [[TMP18:%.*]] = sext i32 [[TMP0]] to i64 34; CHECK-NEXT: [[TMP19:%.*]] = getelementptr inbounds [2 x i8], ptr [[TMP5]], i64 0, i64 [[TMP18]] 35; CHECK-NEXT: store i8 12, ptr [[TMP19]], align 1 36; CHECK-NEXT: [[TMP20:%.*]] = load i8, ptr [[TMP7]], align 1 37; CHECK-NEXT: [[TMP21:%.*]] = sext i8 [[TMP20]] to i32 38; CHECK-NEXT: br label [[TMP22]] 39; CHECK: 22: 40; CHECK-NEXT: [[TMP23:%.*]] = phi i32 [ [[TMP14]], [[TMP10]] ], [ [[TMP21]], [[TMP17]] ], [ 0, [[TMP15]] ] 41; CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 2, ptr nonnull [[TMP7]]) #[[ATTR3]] 42; CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 100, ptr nonnull [[TMP6]]) #[[ATTR3]] 43; CHECK-NEXT: ret i32 [[TMP23]] 44; 45 46 %4 = alloca [100 x i8], align 16 47 %5 = alloca [2 x i8], align 1 48 %6 = getelementptr inbounds [100 x i8], ptr %4, i64 0, i64 0 49 call void @llvm.lifetime.start.p0(i64 100, ptr nonnull %6) #3 50 ; This memset must move. 51 call void @llvm.memset.p0.i64(ptr noundef nonnull align 16 dereferenceable(100) %6, i8 -86, i64 100, i1 false), !annotation !0 52 %7 = getelementptr inbounds [2 x i8], ptr %5, i64 0, i64 0 53 call void @llvm.lifetime.start.p0(i64 2, ptr nonnull %7) #3 54 ; This store must move. 55 store i8 -86, ptr %7, align 1, !annotation !0 56 %8 = getelementptr inbounds [2 x i8], ptr %5, i64 0, i64 1 57 ; This store must move. 58 store i8 -86, ptr %8, align 1, !annotation !0 59 %9 = icmp eq i32 %1, 0 60 br i1 %9, label %15, label %10 61 6210: 63 %11 = sext i32 %0 to i64 64 %12 = getelementptr inbounds [100 x i8], ptr %4, i64 0, i64 %11 65 store i8 12, ptr %12, align 1 66 %13 = load i8, ptr %6, align 16 67 %14 = sext i8 %13 to i32 68 br label %22 69 7015: 71 %16 = icmp eq i32 %2, 0 72 br i1 %16, label %22, label %17 73 7417: 75 %18 = sext i32 %0 to i64 76 %19 = getelementptr inbounds [2 x i8], ptr %5, i64 0, i64 %18 77 store i8 12, ptr %19, align 1 78 %20 = load i8, ptr %7, align 1 79 %21 = sext i8 %20 to i32 80 br label %22 81 8222: 83 %23 = phi i32 [ %14, %10 ], [ %21, %17 ], [ 0, %15 ] 84 call void @llvm.lifetime.end.p0(i64 2, ptr nonnull %7) #3 85 call void @llvm.lifetime.end.p0(i64 100, ptr nonnull %6) #3 86 ret i32 %23 87} 88 89declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1 90 91declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #2 92 93declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1 94 95attributes #0 = { mustprogress nofree nosync nounwind readnone uwtable willreturn } 96attributes #1 = { argmemonly mustprogress nofree nosync nounwind willreturn } 97attributes #2 = { argmemonly mustprogress nofree nounwind willreturn writeonly } 98attributes #3 = { nounwind } 99 100!0 = !{!"auto-init"} 101