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 // RUN: %clang_cc1 -triple powerpc64-ibm-aix-xcoff -emit-llvm -o - %s | FileCheck %s
6 
7 #include <stdarg.h>
8 
9 struct x {
10   long a;
11   double b;
12 };
13 
14 void testva (int n, ...)
15 {
16   va_list ap;
17 
18   struct x t = va_arg (ap, struct x);
19 // CHECK: bitcast i8* %{{[a-z.0-9]*}} to %struct.x*
20 // CHECK: bitcast %struct.x* %t to i8*
21 // CHECK: bitcast %struct.x* %{{[0-9]+}} to i8*
22 // CHECK: call void @llvm.memcpy
23 
24 // CHECK-PPC:  [[ARRAYDECAY:%.+]] = getelementptr inbounds [1 x %struct.__va_list_tag], [1 x %struct.__va_list_tag]* %ap, i32 0, i32 0
25 // CHECK-PPC-NEXT:  [[GPRPTR:%.+]] = getelementptr inbounds %struct.__va_list_tag, %struct.__va_list_tag* [[ARRAYDECAY]], i32 0, i32 0
26 // CHECK-PPC-NEXT:  [[GPR:%.+]] = load i8, i8* [[GPRPTR]], align 4
27 // CHECK-PPC-NEXT:  [[COND:%.+]] = icmp ult i8 [[GPR]], 8
28 // CHECK-PPC-NEXT:  br i1 [[COND]], label %[[USING_REGS:[a-z_0-9]+]], label %[[USING_OVERFLOW:[a-z_0-9]+]]
29 //
30 // CHECK-PPC:[[USING_REGS]]
31 // CHECK-PPC-NEXT:  [[REGSAVE_AREA_P:%.+]] = getelementptr inbounds %struct.__va_list_tag, %struct.__va_list_tag* [[ARRAYDECAY]], i32 0, i32 4
32 // CHECK-PPC-NEXT:  [[REGSAVE_AREA:%.+]] = load i8*, i8** [[REGSAVE_AREA_P]], align 4
33 // CHECK-PPC-NEXT:  [[OFFSET:%.+]] = mul i8 [[GPR]], 4
34 // CHECK-PPC-NEXT:  [[RAW_REGADDR:%.+]] = getelementptr inbounds i8, i8* [[REGSAVE_AREA]], i8 [[OFFSET]]
35 // CHECK-PPC-NEXT:  [[REGADDR:%.+]] = bitcast i8* [[RAW_REGADDR]] to %struct.x**
36 // CHECK-PPC-NEXT:  [[USED_GPR:%[0-9]+]] = add i8 [[GPR]], 1
37 // CHECK-PPC-NEXT:  store i8 [[USED_GPR]], i8* [[GPRPTR]], align 4
38 // CHECK-PPC-NEXT:  br label %[[CONT:[a-z0-9]+]]
39 //
40 // CHECK-PPC:[[USING_OVERFLOW]]
41 // CHECK-PPC-NEXT:  store i8 8, i8* [[GPRPTR]], align 4
42 // CHECK-PPC-NEXT:  [[OVERFLOW_AREA_P:%[0-9]+]] = getelementptr inbounds %struct.__va_list_tag, %struct.__va_list_tag* [[ARRAYDECAY]], i32 0, i32 3
43 // CHECK-PPC-NEXT:  [[OVERFLOW_AREA:%.+]] = load i8*, i8** [[OVERFLOW_AREA_P]], align 4
44 // CHECK-PPC-NEXT:  %{{[0-9]+}} =  ptrtoint i8* %argp.cur to i32
45 // CHECK-PPC-NEXT:  %{{[0-9]+}} = add i32 %{{[0-9]+}}, 7
46 // CHECK-PPC-NEXT:  %{{[0-9]+}} = and i32 %{{[0-9]+}}, -8
47 // CHECK-PPC-NEXT:  %argp.cur.aligned = inttoptr i32 %{{[0-9]+}} to i8*
48 // CHECK-PPC-NEXT:  [[MEMADDR:%.+]] = bitcast i8* %argp.cur.aligned to %struct.x**
49 // CHECK-PPC-NEXT:  [[NEW_OVERFLOW_AREA:%[0-9]+]] = getelementptr inbounds i8, i8* %argp.cur.aligned, i32 4
50 // CHECK-PPC-NEXT:  store i8* [[NEW_OVERFLOW_AREA:%[0-9]+]], i8** [[OVERFLOW_AREA_P]], align 4
51 // CHECK-PPC-NEXT:  br label %[[CONT]]
52 //
53 // CHECK-PPC:[[CONT]]
54 // CHECK-PPC-NEXT:  [[VAARG_ADDR:%[a-z.0-9]+]] = phi %struct.x** [ [[REGADDR]], %[[USING_REGS]] ], [ [[MEMADDR]], %[[USING_OVERFLOW]] ]
55 // CHECK-PPC-NEXT:  [[AGGR:%[a-z0-9]+]] = load %struct.x*, %struct.x** [[VAARG_ADDR]]
56 // CHECK-PPC-NEXT:  [[DEST:%[0-9]+]] = bitcast %struct.x* %t to i8*
57 // CHECK-PPC-NEXT:  [[SRC:%.+]] = bitcast %struct.x* [[AGGR]] to i8*
58 // CHECK-PPC-NEXT:  call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 8 [[DEST]], i8* align 8 [[SRC]], i32 16, i1 false)
59 
60   int v = va_arg (ap, int);
61 
62 // CHECK: getelementptr inbounds i8, i8* %{{[a-z.0-9]*}}, i64 4
63 // CHECK: bitcast i8* %{{[0-9]+}} to i32*
64 // 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
65 // CHECK-PPC-NEXT:  [[GPRPTR:%.+]] = getelementptr inbounds %struct.__va_list_tag, %struct.__va_list_tag* [[ARRAYDECAY]], i32 0, i32 0
66 // CHECK-PPC-NEXT:  [[GPR:%.+]] = load i8, i8* [[GPRPTR]], align 4
67 // CHECK-PPC-NEXT:  [[COND:%.+]] = icmp ult i8 [[GPR]], 8
68 // CHECK-PPC-NEXT:  br i1 [[COND]], label %[[USING_REGS:.+]], label %[[USING_OVERFLOW:.+]]{{$}}
69 //
70 // CHECK-PPC:[[USING_REGS]]
71 // CHECK-PPC-NEXT:  [[REGSAVE_AREA_P:%.+]] = getelementptr inbounds %struct.__va_list_tag, %struct.__va_list_tag* [[ARRAYDECAY]], i32 0, i32 4
72 // CHECK-PPC-NEXT:  [[REGSAVE_AREA:%.+]] = load i8*, i8** [[REGSAVE_AREA_P]], align 4
73 // CHECK-PPC-NEXT:  [[OFFSET:%.+]] = mul i8 [[GPR]], 4
74 // CHECK-PPC-NEXT:  [[RAW_REGADDR:%.+]] = getelementptr inbounds i8, i8* [[REGSAVE_AREA]], i8 [[OFFSET]]
75 // CHECK-PPC-NEXT:  [[REGADDR:%.+]] = bitcast i8* [[RAW_REGADDR]] to i32*
76 // CHECK-PPC-NEXT:  [[USED_GPR:%[0-9]+]] = add i8 [[GPR]], 1
77 // CHECK-PPC-NEXT:  store i8 [[USED_GPR]], i8* [[GPRPTR]], align 4
78 // CHECK-PPC-NEXT:  br label %[[CONT:[a-z0-9]+]]
79 //
80 // CHECK-PPC:[[USING_OVERFLOW]]
81 // CHECK-PPC-NEXT:  store i8 8, i8* [[GPRPTR]], align 4
82 // CHECK-PPC-NEXT:  [[OVERFLOW_AREA_P:%[0-9]+]] = getelementptr inbounds %struct.__va_list_tag, %struct.__va_list_tag* [[ARRAYDECAY]], i32 0, i32 3
83 // CHECK-PPC-NEXT:  [[OVERFLOW_AREA:%.+]] = load i8*, i8** [[OVERFLOW_AREA_P]], align 4
84 // CHECK-PPC-NEXT:  [[MEMADDR:%.+]] = bitcast i8* [[OVERFLOW_AREA]] to i32*
85 // CHECK-PPC-NEXT:  [[NEW_OVERFLOW_AREA:%[0-9]+]] = getelementptr inbounds i8, i8* [[OVERFLOW_AREA]], i32 4
86 // CHECK-PPC-NEXT:  store i8* [[NEW_OVERFLOW_AREA]], i8** [[OVERFLOW_AREA_P]]
87 // CHECK-PPC-NEXT:  br label %[[CONT]]
88 //
89 // CHECK-PPC:[[CONT]]
90 // CHECK-PPC-NEXT:  [[VAARG_ADDR:%[a-z.0-9]+]] = phi i32* [ [[REGADDR]], %[[USING_REGS]] ], [ [[MEMADDR]], %[[USING_OVERFLOW]] ]
91 // CHECK-PPC-NEXT:  [[THIRTYFIVE:%[0-9]+]] = load i32, i32* [[VAARG_ADDR]]
92 // CHECK-PPC-NEXT:  store i32 [[THIRTYFIVE]], i32* %v, align 4
93 
94 #ifdef __powerpc64__
95   __int128_t u = va_arg (ap, __int128_t);
96 #endif
97 // CHECK: bitcast i8* %{{[a-z.0-9]+}} to i128*
98 // CHECK-NEXT: load i128, i128* %{{[0-9]+}}
99 }
100