1; RUN: not llvm-as -o /dev/null %s 2>&1 | FileCheck %s 2; PR1633 3 4declare void @llvm.gcroot(i8**, i8*) 5 6define void @caller_must_use_gc() { 7 ; CHECK: Enclosing function does not use GC. 8 ; CHECK-NEXT: call void @llvm.gcroot(i8** %alloca, i8* null) 9 %alloca = alloca i8* 10 call void @llvm.gcroot(i8** %alloca, i8* null) 11 ret void 12} 13 14define void @must_be_alloca() gc "test" { 15; CHECK: llvm.gcroot parameter #1 must be an alloca. 16; CHECK-NEXT: call void @llvm.gcroot(i8** null, i8* null) 17 call void @llvm.gcroot(i8** null, i8* null) 18 ret void 19} 20 21define void @non_ptr_alloca_null() gc "test" { 22 ; CHECK: llvm.gcroot parameter #1 must either be a pointer alloca, or argument #2 must be a non-null constant. 23 ; CHECK-NEXT: call void @llvm.gcroot(i8** %cast.alloca, i8* null) 24 %alloca = alloca i32 25 %cast.alloca = bitcast i32* %alloca to i8** 26 call void @llvm.gcroot(i8** %cast.alloca, i8* null) 27 ret void 28} 29 30define void @non_constant_arg1(i8* %arg) gc "test" { 31 ; CHECK: llvm.gcroot parameter #2 must be a constant. 32 ; CHECK-NEXT: call void @llvm.gcroot(i8** %alloca, i8* %arg) 33 %alloca = alloca i8* 34 call void @llvm.gcroot(i8** %alloca, i8* %arg) 35 ret void 36} 37 38define void @non_ptr_alloca_non_null() gc "test" { 39; CHECK-NOT: llvm.gcroot parameter 40 %alloca = alloca i32 41 %cast.alloca = bitcast i32* %alloca to i8** 42 call void @llvm.gcroot(i8** %cast.alloca, i8* inttoptr (i64 123 to i8*)) 43 ret void 44} 45 46define void @casted_alloca() gc "test" { 47; CHECK-NOT: llvm.gcroot parameter 48 %alloca = alloca i32* 49 %ptr.cast.alloca = bitcast i32** %alloca to i8** 50 call void @llvm.gcroot(i8** %ptr.cast.alloca, i8* null) 51 ret void 52} 53