65526f0190
That revision started classifying truly empty structs like "Y" and "X" as being NoClass/NoClass and turning them into 'ignore'. The call code turns around and allocates space for the ignored argument with GetUndefRValue. The bug is that GetUndefRValue would return the address as undef, instead of returning an object with a defined address but undefined contents. llvm-svn: 111794
103 lines
2.3 KiB
C++
103 lines
2.3 KiB
C++
// RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -o - %s | FileCheck %s
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// Basic base class test.
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struct f0_s0 { unsigned a; };
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struct f0_s1 : public f0_s0 { void *b; };
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// CHECK: define void @_Z2f05f0_s1(i64 %a0.coerce0, i8* %a0.coerce1)
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void f0(f0_s1 a0) { }
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// Check with two eight-bytes in base class.
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struct f1_s0 { unsigned a; unsigned b; float c; };
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struct f1_s1 : public f1_s0 { float d;};
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// CHECK: define void @_Z2f15f1_s1(i64 %a0.coerce0, double %a0.coerce1)
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void f1(f1_s1 a0) { }
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// Check with two eight-bytes in base class and merge.
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struct f2_s0 { unsigned a; unsigned b; float c; };
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struct f2_s1 : public f2_s0 { char d;};
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// CHECK: define void @_Z2f25f2_s1(i64 %a0.coerce0, i64 %a0.coerce1)
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void f2(f2_s1 a0) { }
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// PR5831
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// CHECK: define void @_Z2f34s3_1(i64 %x.coerce)
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struct s3_0 {};
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struct s3_1 { struct s3_0 a; long b; };
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void f3(struct s3_1 x) {}
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// CHECK: define i64 @_Z4f4_0M2s4i(i64 %a)
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// CHECK: define {{.*}} @_Z4f4_1M2s4FivE(i64 %a.coerce0, i64 %a.coerce1)
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struct s4 {};
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typedef int s4::* s4_mdp;
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typedef int (s4::*s4_mfp)();
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s4_mdp f4_0(s4_mdp a) { return a; }
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s4_mfp f4_1(s4_mfp a) { return a; }
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namespace PR7523 {
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struct StringRef {
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char *a;
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};
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void AddKeyword(StringRef, int x);
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void foo() {
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// CHECK: define void @_ZN6PR75233fooEv()
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// CHECK: call void @_ZN6PR752310AddKeywordENS_9StringRefEi(i8* {{.*}}, i32 4)
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AddKeyword(StringRef(), 4);
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}
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}
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namespace PR7742 { // Also rdar://8250764
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struct s2 {
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float a[2];
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};
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struct c2 : public s2 {};
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// CHECK: define double @_ZN6PR77423fooEPNS_2c2E(%"struct.PR7742::c2"* %P)
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c2 foo(c2 *P) {
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}
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}
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namespace PR5179 {
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struct B {};
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struct B1 : B {
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int* pa;
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};
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struct B2 : B {
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B1 b1;
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};
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// CHECK: define i8* @_ZN6PR51793barENS_2B2E(i32* %b2.coerce)
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const void *bar(B2 b2) {
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return b2.b1.pa;
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}
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}
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namespace test5 {
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struct Xbase { };
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struct Empty { };
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struct Y;
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struct X : public Xbase {
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Empty empty;
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Y f();
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};
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struct Y : public X {
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Empty empty;
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};
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X getX();
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int takeY(const Y&, int y);
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void g() {
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// rdar://8340348 - The temporary for the X object needs to have a defined
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// address when passed into X::f as 'this'.
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takeY(getX().f(), 42);
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}
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// CHECK: void @_ZN5test51gEv()
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// CHECK: alloca %"struct.test5::Y"
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// CHECK: alloca %"struct.test5::X"
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// CHECK: alloca %"struct.test5::Y"
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}
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