xref: /llvm-project/llvm/test/CodeGen/Mips/cconv/arguments-varargs-small-structs-combinations.ll (revision ae26f50aea4ef1a6c7058019f0db11a91bbcdade) 
1; RUN: llc --mtriple=mips64 -mcpu=mips64r2 < %s | FileCheck %s
2
3; Generated from the C program:
4;
5; #include <stdio.h>
6; #include <string.h>
7;
8; struct SmallStruct_1b1s {
9;  char x1;
10;  short x2;
11; };
12;
13; struct SmallStruct_1b1i {
14;  char x1;
15;  int x2;
16; };
17;
18; struct SmallStruct_1b1s1b {
19;  char x1;
20;  short x2;
21;  char x3;
22; };
23;
24; struct SmallStruct_1s1i {
25;  short x1;
26;  int x2;
27; };
28;
29; struct SmallStruct_3b1s {
30;  char x1;
31;  char x2;
32;  char x3;
33;  short x4;
34; };
35;
36; void varArgF_SmallStruct(char* c, ...);
37;
38; void smallStruct_1b1s(struct SmallStruct_1b1s* ss)
39; {
40;  varArgF_SmallStruct("", *ss);
41; }
42;
43; void smallStruct_1b1i(struct SmallStruct_1b1i* ss)
44; {
45;  varArgF_SmallStruct("", *ss);
46; }
47;
48; void smallStruct_1b1s1b(struct SmallStruct_1b1s1b* ss)
49; {
50;  varArgF_SmallStruct("", *ss);
51; }
52;
53; void smallStruct_1s1i(struct SmallStruct_1s1i* ss)
54; {
55;  varArgF_SmallStruct("", *ss);
56; }
57;
58; void smallStruct_3b1s(struct SmallStruct_3b1s* ss)
59; {
60;  varArgF_SmallStruct("", *ss);
61; }
62
63%struct.SmallStruct_1b1s = type { i8, i16 }
64%struct.SmallStruct_1b1i = type { i8, i32 }
65%struct.SmallStruct_1b1s1b = type { i8, i16, i8 }
66%struct.SmallStruct_1s1i = type { i16, i32 }
67%struct.SmallStruct_3b1s = type { i8, i8, i8, i16 }
68
69@.str = private unnamed_addr constant [3 x i8] c"01\00", align 1
70
71declare void @varArgF_SmallStruct(ptr %c, ...)
72
73define void @smallStruct_1b1s(ptr %ss) #0 {
74entry:
75  %ss.addr = alloca ptr, align 8
76  store ptr %ss, ptr %ss.addr, align 8
77  %0 = load ptr, ptr %ss.addr, align 8
78  %1 = load i32, ptr %0, align 1
79  call void (ptr, ...) @varArgF_SmallStruct(ptr @.str, i32 inreg %1)
80  ret void
81 ; CHECK-LABEL: smallStruct_1b1s:
82 ; CHECK: dsll $[[R1:[0-9]+]], $[[R2:[0-9]+]], 32
83}
84
85define void @smallStruct_1b1i(ptr %ss) #0 {
86entry:
87  %ss.addr = alloca ptr, align 8
88  store ptr %ss, ptr %ss.addr, align 8
89  %0 = load ptr, ptr %ss.addr, align 8
90  %1 = load i64, ptr %0, align 1
91  call void (ptr, ...) @varArgF_SmallStruct(ptr @.str, i64 inreg %1)
92  ret void
93 ; CHECK-LABEL: smallStruct_1b1i:
94 ; CHECK-NOT: dsll
95 ; CHECK: lui
96}
97
98define void @smallStruct_1b1s1b(ptr %ss) #0 {
99entry:
100  %ss.addr = alloca ptr, align 8
101  %.coerce = alloca { i48 }
102  store ptr %ss, ptr %ss.addr, align 8
103  %0 = load ptr, ptr %ss.addr, align 8
104  call void @llvm.memcpy.p0.p0.i64(ptr %.coerce, ptr %0, i64 6, i1 false)
105  %1 = load i48, ptr %.coerce, align 1
106  call void (ptr, ...) @varArgF_SmallStruct(ptr @.str, i48 inreg %1)
107  ret void
108 ; CHECK-LABEL: smallStruct_1b1s1b:
109 ; CHECK: dsll $[[R1:[0-9]+]], $[[R2:[0-9]+]], 16
110}
111
112declare void @llvm.memcpy.p0.p0.i64(ptr nocapture, ptr nocapture readonly, i64, i1) #1
113
114define void @smallStruct_1s1i(ptr %ss) #0 {
115entry:
116  %ss.addr = alloca ptr, align 8
117  store ptr %ss, ptr %ss.addr, align 8
118  %0 = load ptr, ptr %ss.addr, align 8
119  %1 = load i64, ptr %0, align 1
120  call void (ptr, ...) @varArgF_SmallStruct(ptr @.str, i64 inreg %1)
121  ret void
122 ; CHECK-LABEL: smallStruct_1s1i:
123 ; CHECK-NOT: dsll
124 ; CHECK: lui
125}
126
127define void @smallStruct_3b1s(ptr %ss) #0 {
128entry:
129  %ss.addr = alloca ptr, align 8
130  %.coerce = alloca { i48 }
131  store ptr %ss, ptr %ss.addr, align 8
132  %0 = load ptr, ptr %ss.addr, align 8
133  call void @llvm.memcpy.p0.p0.i64(ptr %.coerce, ptr %0, i64 6, i1 false)
134  %1 = load i48, ptr %.coerce, align 1
135  call void (ptr, ...) @varArgF_SmallStruct(ptr @.str, i48 inreg %1)
136  ret void
137 ; CHECK-LABEL: smallStruct_3b1s:
138 ; CHECK: dsll $[[R1:[0-9]+]], $[[R2:[0-9]+]], 16
139}
140