06b2b4a7c9
attribute. It is a variation of the x86_64 ABI: * A struct returned indirectly uses the first register argument to pass the pointer. * Floats, Doubles and structs containing only one of them are not passed in registers. * Other structs are split into registers if they fit on the remaining ones. Otherwise they are passed in memory. * When a struct doesn't fit it still consumes the registers. llvm-svn: 161022
27 lines
880 B
C++
27 lines
880 B
C++
// RUN: %clang_cc1 -triple i686-pc-linux-gnu %s -emit-llvm -o - | FileCheck %s
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struct foo {
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template<typename T>
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__attribute__ ((regparm (3))) foo(T x) {}
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__attribute__ ((regparm (3))) foo();
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__attribute__ ((regparm (3))) ~foo();
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};
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foo::foo() {
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// CHECK: define void @_ZN3fooC1Ev(%struct.foo* inreg %this)
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// CHECK: define void @_ZN3fooC2Ev(%struct.foo* inreg %this)
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}
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foo::~foo() {
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// CHECK: define void @_ZN3fooD1Ev(%struct.foo* inreg %this)
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// CHECK: define void @_ZN3fooD2Ev(%struct.foo* inreg %this)
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}
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void dummy() {
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// FIXME: how can we explicitly instantiate a template constructor? Gcc and
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// older clangs accept:
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// template foo::foo(int x);
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foo x(10);
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// CHECK: define linkonce_odr void @_ZN3fooC1IiEET_(%struct.foo* inreg %this, i32 inreg %x)
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// CHECK: define linkonce_odr void @_ZN3fooC2IiEET_(%struct.foo* inreg %this, i32 inreg %x)
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}
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