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150
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1 // RUN: %clang_cc1 -triple i386-unknown-unknown %s -emit-llvm -o - | FileCheck %s
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2
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3
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4 // CHECK: _Z3fooRi(i32* inreg
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5 void __attribute__ ((regparm (1))) foo(int &a) {
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6 }
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7
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8 struct S1 {
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9 int x;
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10 S1(const S1 &y);
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11 };
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12
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13 void __attribute__((regparm(3))) foo2(S1 a, int b);
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14 // CHECK: declare void @_Z4foo22S1i(%struct.S1* inreg, i32 inreg)
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15 void bar2(S1 a, int b) {
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16 foo2(a, b);
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17 }
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18
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19 struct S2 {
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20 int x;
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21 };
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22
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23 void __attribute__((regparm(3))) foo3(struct S2 a, int b);
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24 // CHECK: declare void @_Z4foo32S2i(i32 inreg, i32 inreg)
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25 void bar3(struct S2 a, int b) {
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26 foo3(a, b);
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27 }
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28
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29 struct S3 {
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30 struct {
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31 struct {} b[0];
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32 } a;
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33 };
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34 __attribute((regparm(2))) void foo4(S3 a, int b);
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35 // CHECK: declare void @_Z4foo42S3i(%struct.S3* byval(%struct.S3) align 4, i32 inreg)
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36 void bar3(S3 a, int b) {
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37 foo4(a, b);
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38 }
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