1; RUN: opt -lowertypetests -S %s | FileCheck --check-prefix=FULL %s 2; RUN: opt -lowertypetests -lowertypetests-summary-action=import -lowertypetests-read-summary=%p/Inputs/cfi-direct-call1.yaml -S %s | FileCheck --check-prefix=THIN %s 3 4target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 5target triple = "x86_64-unknown-linux" 6 7define hidden i32 @local_func1() !type !3 !type !4 { 8 ret i32 11 9} 10 11define hidden i32 @local_func2() !type !3 !type !4 { 12 ret i32 22 13} 14 15define hidden i32 @local_func3(i32 %i) local_unnamed_addr !type !5 !type !6 { 16entry: 17 %add = add nsw i32 %i, 44 18 ret i32 %add 19} 20 21declare !type !3 !type !4 extern_weak i32 @extern_weak() 22declare !type !3 !type !4 i32 @extern_decl() 23declare i1 @llvm.type.test(i8*, metadata) 24 25define hidden i32 @main(i32 %argc) { 26entry: 27 %cmp.i = icmp sgt i32 %argc, 1 28 %fptr1 = select i1 %cmp.i, i32 ()* @local_func1, i32 ()* @local_func2 29 %fptr2 = select i1 %cmp.i, i32 ()* @extern_weak, i32 ()* @extern_decl 30 %0 = bitcast i32 ()* %fptr1 to i8* 31 %1 = tail call i1 @llvm.type.test(i8* nonnull %0, metadata !"_ZTSFivE") 32 33 %call2 = tail call i32 %fptr1() 34 %2 = bitcast i32 ()* %fptr2 to i8* 35 %3 = tail call i1 @llvm.type.test(i8* %2, metadata !"_ZTSFivE") 36 37 %call4 = tail call i32 %fptr2() 38 %call5 = tail call i32 @extern_decl() 39 %call7 = tail call i32 @extern_weak() 40 %call6 = tail call i32 @local_func1() 41 %call8 = tail call i32 @local_func3(i32 4) 42 ret i32 12 43} 44 45!3 = !{i64 0, !"_ZTSFivE"} 46!4 = !{i64 0, !"_ZTSFivE.generalized"} 47!5 = !{i64 0, !"_ZTSFiiE"} 48!6 = !{i64 0, !"_ZTSFiiE.generalized"} 49 50; Make sure local_func1 and local_func2 have been renamed to <name>.cfi 51; FULL: define hidden i32 @local_func1.cfi() 52; FULL: define hidden i32 @local_func2.cfi() 53 54; There are no indirect calls of local_func3 type, it should not be renamed 55; FULL: define hidden i32 @local_func3(i32 %i) 56 57; Indirect references to local_func1 and local_func2 must to through jump table 58; FULL: %fptr1 = select i1 %cmp.i, i32 ()* @local_func1, i32 ()* @local_func2 59 60; Indirect references to extern_weak and extern_decl must go through jump table 61; FULL: %fptr2 = select i1 %cmp.i, i32 ()* select (i1 icmp ne (i32 ()* @extern_weak, i32 ()* null), i32 ()* bitcast ([8 x i8]* getelementptr inbounds ([4 x [8 x i8]], [4 x [8 x i8]]* bitcast (void ()* @.cfi.jumptable to [4 x [8 x i8]]*), i64 0, i64 2) to i32 ()*), i32 ()* null), i32 ()* bitcast ([8 x i8]* getelementptr inbounds ([4 x [8 x i8]], [4 x [8 x i8]]* bitcast (void ()* @.cfi.jumptable to [4 x [8 x i8]]*), i64 0, i64 3) to i32 ()*) 62 63; Direct calls to extern_weak and extern_decl should go to original names 64; FULL: %call5 = tail call i32 @extern_decl() 65; FULL: %call7 = tail call i32 @extern_weak() 66 67; Direct call to local_func1 should to the renamed version 68; FULL: %call6 = tail call i32 @local_func1.cfi() 69 70; local_func3 hasn't been renamed, direct call should go to the original name 71; FULL: %call8 = tail call i32 @local_func3(i32 4) 72 73; Check which jump table entries are created 74; FULL: define private void @.cfi.jumptable(){{.*}} 75; FULL-NEXT: entry: 76; FULL-NEXT: call void asm{{.*}}local_func1.cfi{{.*}}local_func2.cfi{{.*}}extern_weak{{.*}}extern_decl 77 78; Make sure all local functions have been renamed to <name>.cfi 79; THIN: define hidden i32 @local_func1.cfi() 80; THIN: define hidden i32 @local_func2.cfi() 81; THIN: define hidden i32 @local_func3.cfi(i32 %i){{.*}} 82 83; Indirect references to local_func1 and local_func2 must to through jump table 84; THIN: %fptr1 = select i1 %cmp.i, i32 ()* @local_func1, i32 ()* @local_func2 85 86; Indirect references to extern_weak and extern_decl must go through jump table 87; THIN: %fptr2 = select i1 %cmp.i, i32 ()* select (i1 icmp ne (i32 ()* @extern_weak, i32 ()* null), i32 ()* @extern_weak.cfi_jt, i32 ()* null), i32 ()* @extern_decl.cfi_jt 88 89; Direct calls to extern_weak and extern_decl should go to original names 90; THIN: %call5 = tail call i32 @extern_decl() 91; THIN: %call7 = tail call i32 @extern_weak() 92 93; Direct call to local_func1 should to the renamed version 94; THIN: %call6 = tail call i32 @local_func1.cfi() 95; THIN: %call8 = tail call i32 @local_func3.cfi(i32 4) 96 97