1// RUN: %clang_cc1 -triple i386-unknown-unknown %s -emit-llvm -o - | FileCheck %s 2 3 4// CHECK: _Z3fooRi(i32* inreg 5void __attribute__ ((regparm (1))) foo(int &a) { 6} 7 8struct S1 { 9 int x; 10 S1(const S1 &y); 11}; 12 13void __attribute__((regparm(3))) foo2(S1 a, int b); 14// CHECK: declare void @_Z4foo22S1i(%struct.S1* inreg, i32 inreg) 15void bar2(S1 a, int b) { 16 foo2(a, b); 17} 18 19struct S2 { 20 int x; 21}; 22 23void __attribute__((regparm(3))) foo3(struct S2 a, int b); 24// CHECK: declare void @_Z4foo32S2i(i32 inreg, i32 inreg) 25void bar3(struct S2 a, int b) { 26 foo3(a, b); 27} 28 29struct S3 { 30 struct { 31 struct {} b[0]; 32 } a; 33}; 34__attribute((regparm(2))) void foo4(S3 a, int b); 35// CHECK: declare void @_Z4foo42S3i(%struct.S3* byval align 4, i32 inreg) 36void bar3(S3 a, int b) { 37 foo4(a, b); 38} 39