derek.holloway
7502bf64a4
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65 lines
2.9 KiB
C
65 lines
2.9 KiB
C
// This verifies that structs returned from functions by value are passed
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// correctly according to their attributes and the ABI.
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// SEE: PR3835
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// RUN: %clang_cc1 -triple i386-unknown-unknown -emit-llvm %s -o - | FileCheck %s
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typedef int T0;
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typedef struct { int a[16]; } T1;
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T0 __attribute__((const)) f0(void);
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T0 __attribute__((pure)) f1(void);
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T1 __attribute__((const)) f2(void);
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T1 __attribute__((pure)) f3(void);
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int __attribute__((const)) f4(T1 a);
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int __attribute__((pure)) f5(T1 a);
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// NOTE: The int parameters verifies non-ptr parameters are not a problem
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T1 __attribute__((const)) f6(void*, int);
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T1 __attribute__((pure)) f7(void*, int);
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T1 __attribute__((const)) f8(int, ...);
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int __attribute__((const)) f9(int, ...);
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void *ps[] = { f0, f1, f2, f3, f4, f5, f6, f7, f8, f9 };
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// Check markings for varargs arguments.
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//
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// FIXME: We can add markings in more cases.
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void test(T1 t1, void *p) {
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f8(1);
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f8(1, t1);
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f8(1, p);
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f9(1);
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f9(1, t1);
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f9(1, p);
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}
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// CHECK: declare i32 @f0() [[RN:#[0-9]+]]
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// CHECK: declare i32 @f1() [[RO:#[0-9]+]]
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// CHECK: declare void @f2(ptr {{[^,]*}} sret({{[^)]*}}) align 4) [[RNRW:#[0-9]+]]
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// CHECK: declare void @f3(ptr {{[^,]*}} sret({{[^)]*}}) align 4) [[RORW:#[0-9]+]]
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// CHECK: declare i32 @f4(ptr {{[^,]*}} byval({{[^)]*}}) align 4) [[RNRW]]
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// CHECK: declare i32 @f5(ptr {{[^,]*}} byval({{[^)]*}}) align 4) [[RORW]]
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// CHECK: declare void @f6(ptr {{[^,]*}} sret({{[^)]*}}) align 4, ptr {{[^,]*}} readnone, i32 {{[^,]*}}) [[RNRW]]
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// CHECK: declare void @f7(ptr {{[^,]*}} sret({{[^)]*}}) align 4, ptr {{[^,]*}} readonly, i32 {{[^,]*}}) [[RORW]]
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// CHECK: declare void @f8(ptr dead_on_unwind writable sret(%struct.T1) align 4, i32 noundef, ...) [[RNRW]]
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// CHECK: declare i32 @f9(i32 noundef, ...) [[RNRW]]
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// CHECK: call void (ptr, i32, ...) @f8(ptr dead_on_unwind writable sret(%struct.T1) align 4 {{.*}}, i32 noundef 1) [[RNRW_CALL:#[0-9]+]]
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// CHECK: call void (ptr, i32, ...) @f8(ptr dead_on_unwind writable sret(%struct.T1) align 4 {{.*}}, i32 noundef 1, ptr noundef byval(%struct.T1) align 4 {{.*}}) [[RNRW_CALL]]
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// CHECK: call void (ptr, i32, ...) @f8(ptr dead_on_unwind writable sret(%struct.T1) align 4 {{.*}}, i32 noundef 1, ptr noundef %0) [[RNRW_CALL]]
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// CHECK: call i32 (i32, ...) @f9(i32 noundef 1) [[RN_CALL:#[0-9]+]]
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// CHECK: call i32 (i32, ...) @f9(i32 noundef 1, ptr noundef byval(%struct.T1) align 4 {{.*}}) [[RNRW_CALL]]
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// CHECK: call i32 (i32, ...) @f9(i32 noundef 1, ptr noundef %1) [[RN_CALL]]
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// CHECK: attributes [[RN]] = { nounwind willreturn memory(none){{.*}} }
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// CHECK: attributes [[RO]] = { nounwind willreturn memory(read){{.*}} }
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// CHECK: attributes [[RNRW]] = { nounwind willreturn memory(argmem: readwrite){{.*}} }
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// CHECK: attributes [[RORW]] = { nounwind willreturn memory(read, argmem: readwrite){{.*}} }
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// CHECK: attributes [[RNRW_CALL]] = { nounwind willreturn memory(argmem: readwrite) }
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// CHECK: attributes [[RN_CALL]] = { nounwind willreturn memory(none) }
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