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// RUN: %clang_cc1 %s -triple x86_64-apple-macosx10.7.2 -emit-llvm -o - | FileCheck %s
struct X { int x[6]; };
struct Y { char x[13]; struct X y; } __attribute((packed));
struct Y g;
void f(struct X);
struct X foo(void);
struct X test1(void) {
// CHECK: @test1
// CHECK: call void @llvm.memcpy.p0.p0.i64(ptr {{.*}}, ptr align 1 getelementptr inbounds nuw (%struct.Y, ptr @g, i32 0, i32 1), i64 24, i1 false)
return g.y;
}
struct X test2(void) {
// CHECK: @test2
// CHECK: call void @llvm.memcpy.p0.p0.i64(ptr {{.*}}, ptr align 1 getelementptr inbounds nuw (%struct.Y, ptr @g, i32 0, i32 1), i64 24, i1 false)
struct X a = g.y;
return a;
}
void test3(struct X a) {
// CHECK: @test3
// CHECK: call void @llvm.memcpy.p0.p0.i64(ptr align 1 getelementptr inbounds nuw (%struct.Y, ptr @g, i32 0, i32 1), ptr {{.*}}, i64 24, i1 false)
g.y = a;
}
void test4(void) {
// CHECK: @test4
// CHECK: call void @llvm.memcpy.p0.p0.i64(ptr {{.*}}, ptr align 1 getelementptr inbounds nuw (%struct.Y, ptr @g, i32 0, i32 1), i64 24, i1 false)
f(g.y);
}
// PR12395
int test5(void) {
// CHECK: @test5
// CHECK: load i32, ptr getelementptr inbounds nuw (%struct.Y, ptr @g, i32 0, i32 1), align 1
return g.y.x[0];
}
void test6(void) {
// CHECK: @test6
// CHECK: call void @llvm.memcpy.p0.p0.i64(ptr align 1 getelementptr inbounds nuw (%struct.Y, ptr @g, i32 0, i32 1), ptr align 4 %{{.*}}, i64 24, i1 false)
g.y = foo();
}
struct XBitfield {
unsigned b1 : 10;
unsigned b2 : 12;
unsigned b3 : 10;
};
struct YBitfield {
char x;
struct XBitfield y;
} __attribute((packed));
struct YBitfield gbitfield;
unsigned test7(void) {
// CHECK: @test7
// CHECK: load i32, ptr getelementptr inbounds nuw (%struct.YBitfield, ptr @gbitfield, i32 0, i32 1), align 1
return gbitfield.y.b2;
}
void test8(unsigned x) {
// CHECK: @test8
// CHECK: load i32, ptr getelementptr inbounds nuw (%struct.YBitfield, ptr @gbitfield, i32 0, i32 1), align 1
// CHECK: store i32 {{.*}}, ptr getelementptr inbounds nuw (%struct.YBitfield, ptr @gbitfield, i32 0, i32 1), align 1
gbitfield.y.b2 = x;
}
struct TBitfield
{
long a;
char b;
unsigned c:15;
};
struct TBitfield tbitfield;
unsigned test9(void) {
// CHECK: @test9
// CHECK: load i16, ptr getelementptr inbounds nuw (%struct.TBitfield, ptr @tbitfield, i32 0, i32 2), align 1
return tbitfield.c;
}
void test10(unsigned x) {
// CHECK: @test10
// CHECK: load i16, ptr getelementptr inbounds nuw (%struct.TBitfield, ptr @tbitfield, i32 0, i32 2), align 1
// CHECK: store i16 {{.*}}, ptr getelementptr inbounds nuw (%struct.TBitfield, ptr @tbitfield, i32 0, i32 2), align 1
tbitfield.c = x;
}
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