1 // REQUIRES: powerpc-registered-target
2 // REQUIRES: asserts
3 // RUN: %clang_cc1 -triple powerpc64-unknown-linux-gnu -emit-llvm -o - %s | FileCheck %s
4 // RUN: %clang_cc1 -triple powerpc-unknown-linux-gnu -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK-PPC
5
6 #include <stdarg.h>
7
8 struct x {
9 long a;
10 double b;
11 };
12
testva(int n,...)13 void testva (int n, ...)
14 {
15 va_list ap;
16
17 struct x t = va_arg (ap, struct x);
18 // CHECK: bitcast i8* %{{[a-z.0-9]*}} to %struct.x*
19 // CHECK: bitcast %struct.x* %t to i8*
20 // CHECK: bitcast %struct.x* %{{[0-9]+}} to i8*
21 // CHECK: call void @llvm.memcpy
22
23 // CHECK-PPC: [[ARRAYDECAY:%.+]] = getelementptr inbounds [1 x %struct.__va_list_tag], [1 x %struct.__va_list_tag]* %ap, i32 0, i32 0
24 // CHECK-PPC-NEXT: [[GPRPTR:%.+]] = getelementptr inbounds %struct.__va_list_tag, %struct.__va_list_tag* [[ARRAYDECAY]], i32 0, i32 0
25 // CHECK-PPC-NEXT: [[GPR:%.+]] = load i8, i8* [[GPRPTR]], align 4
26 // CHECK-PPC-NEXT: [[COND:%.+]] = icmp ult i8 [[GPR]], 8
27 // CHECK-PPC-NEXT: br i1 [[COND]], label %[[USING_REGS:[a-z_0-9]+]], label %[[USING_OVERFLOW:[a-z_0-9]+]]
28 //
29 // CHECK-PPC:[[USING_REGS]]
30 // CHECK-PPC-NEXT: [[REGSAVE_AREA_P:%.+]] = getelementptr inbounds %struct.__va_list_tag, %struct.__va_list_tag* [[ARRAYDECAY]], i32 0, i32 4
31 // CHECK-PPC-NEXT: [[REGSAVE_AREA:%.+]] = load i8*, i8** [[REGSAVE_AREA_P]], align 4
32 // CHECK-PPC-NEXT: [[OFFSET:%.+]] = mul i8 [[GPR]], 4
33 // CHECK-PPC-NEXT: [[RAW_REGADDR:%.+]] = getelementptr inbounds i8, i8* [[REGSAVE_AREA]], i8 [[OFFSET]]
34 // CHECK-PPC-NEXT: [[REGADDR:%.+]] = bitcast i8* [[RAW_REGADDR]] to %struct.x**
35 // CHECK-PPC-NEXT: [[USED_GPR:%[0-9]+]] = add i8 [[GPR]], 1
36 // CHECK-PPC-NEXT: store i8 [[USED_GPR]], i8* [[GPRPTR]], align 4
37 // CHECK-PPC-NEXT: br label %[[CONT:[a-z0-9]+]]
38 //
39 // CHECK-PPC:[[USING_OVERFLOW]]
40 // CHECK-PPC-NEXT: store i8 8, i8* [[GPRPTR]], align 4
41 // CHECK-PPC-NEXT: [[OVERFLOW_AREA_P:%[0-9]+]] = getelementptr inbounds %struct.__va_list_tag, %struct.__va_list_tag* [[ARRAYDECAY]], i32 0, i32 3
42 // CHECK-PPC-NEXT: [[OVERFLOW_AREA:%.+]] = load i8*, i8** [[OVERFLOW_AREA_P]], align 4
43 // CHECK-PPC-NEXT: %{{[0-9]+}} = ptrtoint i8* %argp.cur to i32
44 // CHECK-PPC-NEXT: %{{[0-9]+}} = add i32 %{{[0-9]+}}, 7
45 // CHECK-PPC-NEXT: %{{[0-9]+}} = and i32 %{{[0-9]+}}, -8
46 // CHECK-PPC-NEXT: %argp.cur.aligned = inttoptr i32 %{{[0-9]+}} to i8*
47 // CHECK-PPC-NEXT: [[MEMADDR:%.+]] = bitcast i8* %argp.cur.aligned to %struct.x**
48 // CHECK-PPC-NEXT: [[NEW_OVERFLOW_AREA:%[0-9]+]] = getelementptr inbounds i8, i8* %argp.cur.aligned, i32 4
49 // CHECK-PPC-NEXT: store i8* [[NEW_OVERFLOW_AREA:%[0-9]+]], i8** [[OVERFLOW_AREA_P]], align 4
50 // CHECK-PPC-NEXT: br label %[[CONT]]
51 //
52 // CHECK-PPC:[[CONT]]
53 // CHECK-PPC-NEXT: [[VAARG_ADDR:%[a-z.0-9]+]] = phi %struct.x** [ [[REGADDR]], %[[USING_REGS]] ], [ [[MEMADDR]], %[[USING_OVERFLOW]] ]
54 // CHECK-PPC-NEXT: [[AGGR:%[a-z0-9]+]] = load %struct.x*, %struct.x** [[VAARG_ADDR]]
55 // CHECK-PPC-NEXT: [[DEST:%[0-9]+]] = bitcast %struct.x* %t to i8*
56 // CHECK-PPC-NEXT: [[SRC:%.+]] = bitcast %struct.x* [[AGGR]] to i8*
57 // CHECK-PPC-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* [[DEST]], i8* [[SRC]], i32 16, i32 8, i1 false)
58
59 int v = va_arg (ap, int);
60
61 // CHECK: getelementptr inbounds i8, i8* %{{[a-z.0-9]*}}, i64 4
62 // CHECK: bitcast i8* %{{[0-9]+}} to i32*
63 // CHECK-PPC: [[ARRAYDECAY:%[a-z0-9]+]] = getelementptr inbounds [1 x %struct.__va_list_tag], [1 x %struct.__va_list_tag]* %ap, i32 0, i32 0
64 // CHECK-PPC-NEXT: [[GPRPTR:%.+]] = getelementptr inbounds %struct.__va_list_tag, %struct.__va_list_tag* [[ARRAYDECAY]], i32 0, i32 0
65 // CHECK-PPC-NEXT: [[GPR:%.+]] = load i8, i8* [[GPRPTR]], align 4
66 // CHECK-PPC-NEXT: [[COND:%.+]] = icmp ult i8 [[GPR]], 8
67 // CHECK-PPC-NEXT: br i1 [[COND]], label %[[USING_REGS:.+]], label %[[USING_OVERFLOW:.+]]{{$}}
68 //
69 // CHECK-PPC:[[USING_REGS]]
70 // CHECK-PPC-NEXT: [[REGSAVE_AREA_P:%.+]] = getelementptr inbounds %struct.__va_list_tag, %struct.__va_list_tag* [[ARRAYDECAY]], i32 0, i32 4
71 // CHECK-PPC-NEXT: [[REGSAVE_AREA:%.+]] = load i8*, i8** [[REGSAVE_AREA_P]], align 4
72 // CHECK-PPC-NEXT: [[OFFSET:%.+]] = mul i8 [[GPR]], 4
73 // CHECK-PPC-NEXT: [[RAW_REGADDR:%.+]] = getelementptr inbounds i8, i8* [[REGSAVE_AREA]], i8 [[OFFSET]]
74 // CHECK-PPC-NEXT: [[REGADDR:%.+]] = bitcast i8* [[RAW_REGADDR]] to i32*
75 // CHECK-PPC-NEXT: [[USED_GPR:%[0-9]+]] = add i8 [[GPR]], 1
76 // CHECK-PPC-NEXT: store i8 [[USED_GPR]], i8* [[GPRPTR]], align 4
77 // CHECK-PPC-NEXT: br label %[[CONT:[a-z0-9]+]]
78 //
79 // CHECK-PPC:[[USING_OVERFLOW]]
80 // CHECK-PPC-NEXT: store i8 8, i8* [[GPRPTR]], align 4
81 // CHECK-PPC-NEXT: [[OVERFLOW_AREA_P:%[0-9]+]] = getelementptr inbounds %struct.__va_list_tag, %struct.__va_list_tag* [[ARRAYDECAY]], i32 0, i32 3
82 // CHECK-PPC-NEXT: [[OVERFLOW_AREA:%.+]] = load i8*, i8** [[OVERFLOW_AREA_P]], align 4
83 // CHECK-PPC-NEXT: [[MEMADDR:%.+]] = bitcast i8* [[OVERFLOW_AREA]] to i32*
84 // CHECK-PPC-NEXT: [[NEW_OVERFLOW_AREA:%[0-9]+]] = getelementptr inbounds i8, i8* [[OVERFLOW_AREA]], i32 4
85 // CHECK-PPC-NEXT: store i8* [[NEW_OVERFLOW_AREA]], i8** [[OVERFLOW_AREA_P]]
86 // CHECK-PPC-NEXT: br label %[[CONT]]
87 //
88 // CHECK-PPC:[[CONT]]
89 // CHECK-PPC-NEXT: [[VAARG_ADDR:%[a-z.0-9]+]] = phi i32* [ [[REGADDR]], %[[USING_REGS]] ], [ [[MEMADDR]], %[[USING_OVERFLOW]] ]
90 // CHECK-PPC-NEXT: [[THIRTYFIVE:%[0-9]+]] = load i32, i32* [[VAARG_ADDR]]
91 // CHECK-PPC-NEXT: store i32 [[THIRTYFIVE]], i32* %v, align 4
92
93 #ifdef __powerpc64__
94 __int128_t u = va_arg (ap, __int128_t);
95 #endif
96 // CHECK: bitcast i8* %{{[a-z.0-9]+}} to i128*
97 // CHECK-NEXT: load i128, i128* %{{[0-9]+}}
98 }
99