314ef7bafd
When a non-trivial parameter is present, clang now gathers up all the parameters that lack inreg and puts them into a packed struct. MSVC always aligns each parameter to 4 bytes and no more, so this is a pretty simple struct to lay out. On win64, non-trivial records are passed indirectly. Prior to this change, clang was incorrectly using byval on win64. I'm able to self-host a working clang with this change and additional LLVM patches. Reviewers: rsmith Differential Revision: http://llvm-reviews.chandlerc.com/D2636 llvm-svn: 200597
46 lines
766 B
C++
46 lines
766 B
C++
// RUN: %clang_cc1 -triple %itanium_abi_triple -emit-llvm -o - %s | FileCheck %s -check-prefix=CHECK
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// RUN: %clang_cc1 -triple %ms_abi_triple -emit-llvm -o - %s | FileCheck %s -check-prefix MS
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// CHECK-NOT: _ZN1CC1ERK1C
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// CHECK-NOT: _ZN1SC1ERK1S
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// MS-NOT: ?0C@@QAE@ABV0
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// MS-NOT: ?0S@@QAE@ABV0
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extern "C" int printf(...);
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struct C {
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C() : iC(6) {printf("C()\n"); }
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C(const C& c) { printf("C(const C& c)\n"); }
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int iC;
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};
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C foo() {
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return C();
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};
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class X { // ...
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public:
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X(int) {}
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X(const X&, int i = 1, int j = 2, C c = foo()) {
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printf("X(const X&, %d, %d, %d)\n", i, j, c.iC);
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}
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};
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struct S {
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S();
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};
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S::S() { printf("S()\n"); }
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void Call(S) {};
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int main() {
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X a(1);
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X b(a, 2);
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X c = b;
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X d(a, 5, 6);
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S s;
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Call(s);
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}
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