1 ; RUN: llc < %s -mtriple=x86_64-linux | FileCheck %s 2 3 %struct.__va_list_tag = type { i32, i32, i8*, i8* } 4 5 define void @foo(i32 %x, ...) nounwind { 6 entry: 7 %ap = alloca [1 x %struct.__va_list_tag], align 8; <[1 x %struct.__va_list_tag]*> [#uses=2] 8 %ap12 = bitcast [1 x %struct.__va_list_tag]* %ap to i8*; <i8*> [#uses=2] 9 call void @llvm.va_start(i8* %ap12) 10 ; CHECK: testb %al, %al 11 12 ; These test for specific offsets, which is very fragile. Still, the test needs 13 ; to ensure that va_list has the correct element types. 14 ; 15 ; CHECK-DAG: movq {{.*}}, 192(%rsp) 16 ; CHECK-DAG: movq {{.*}}, 184(%rsp) 17 ; CHECK-DAG: movl {{.*}}, 180(%rsp) 18 ; CHECK-DAG: movl {{.*}}, 176(%rsp) 19 %ap3 = getelementptr inbounds [1 x %struct.__va_list_tag], [1 x %struct.__va_list_tag]* %ap, i64 0, i64 0; <%struct.__va_list_tag*> [#uses=1] 20 call void @bar(%struct.__va_list_tag* %ap3) nounwind 21 call void @llvm.va_end(i8* %ap12) 22 ret void 23 } 24 25 declare void @llvm.va_start(i8*) nounwind 26 27 declare void @bar(%struct.__va_list_tag*) 28 29 declare void @llvm.va_end(i8*) nounwind 30
