derek.holloway
7502bf64a4
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236 lines
8.1 KiB
C++
236 lines
8.1 KiB
C++
// RUN: %clang_cc1 -triple x86_64-gnu-linux -x c++ -fclangir -emit-cir %s -o %t.cir
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// RUN: FileCheck --check-prefix=CIR --input-file=%t.cir %s
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// RUN: %clang_cc1 -triple x86_64-gnu-linux -x c++ -fclangir -emit-llvm %s -o %t-cir.ll
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// RUN: FileCheck --check-prefix=LLVM --input-file=%t-cir.ll %s
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// RUN: %clang_cc1 -triple x86_64-gnu-linux -x c++ -emit-llvm %s -o %t.ll
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// RUN: FileCheck --check-prefix=OGCG --input-file=%t.ll %s
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// All cases from CodeGen/attr-noundef.cpp (x86_64 only).
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// Tests noundef placement on structs, unions, this pointers, vectors,
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// function/array pointers, member pointers, nullptr_t, and _BitInt.
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//************ Passing structs by value
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namespace check_structs {
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struct Trivial {
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int a;
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};
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Trivial ret_trivial() { return {}; }
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void pass_trivial(Trivial e) {}
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// CIR-LABEL: cir.func {{.*}} @_ZN13check_structs11ret_trivialEv
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// CIR-LABEL: cir.func {{.*}} @_ZN13check_structs12pass_trivialENS_7TrivialE
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// LLVM-LABEL: define {{.*}} @_ZN13check_structs11ret_trivialEv(
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// LLVM-LABEL: define {{.*}} void @_ZN13check_structs12pass_trivialENS_7TrivialE(
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// OGCG: define{{.*}} i32 @_ZN13check_structs11ret_trivialEv
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// OGCG: define{{.*}} void @_ZN13check_structs12pass_trivialENS_7TrivialE{{.*}}(i32 %
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struct NoCopy {
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int a;
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NoCopy(NoCopy &) = delete;
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};
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NoCopy ret_nocopy() { return {}; }
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void pass_nocopy(NoCopy e) {}
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// CIR-LABEL: cir.func {{.*}} @_ZN13check_structs10ret_nocopyEv
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// CIR-LABEL: cir.func {{.*}} @_ZN13check_structs11pass_nocopyENS_6NoCopyE
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// LLVM-LABEL: define {{.*}} @_ZN13check_structs10ret_nocopyEv(
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// LLVM-LABEL: define {{.*}} void @_ZN13check_structs11pass_nocopyENS_6NoCopyE(
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// OGCG: define{{.*}} void @_ZN13check_structs10ret_nocopyEv{{.*}}(ptr dead_on_unwind noalias writable sret({{[^)]+}}) align 4 %
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// OGCG: define{{.*}} void @_ZN13check_structs11pass_nocopyENS_6NoCopyE{{.*}}(ptr noundef dead_on_return %
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struct Huge {
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int a[1024];
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};
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Huge ret_huge() { return {}; }
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void pass_huge(Huge h) {}
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// CIR-LABEL: cir.func {{.*}} @_ZN13check_structs8ret_hugeEv
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// CIR-LABEL: cir.func {{.*}} @_ZN13check_structs9pass_hugeENS_4HugeE
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// LLVM-LABEL: define {{.*}} @_ZN13check_structs8ret_hugeEv(
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// LLVM-LABEL: define {{.*}} void @_ZN13check_structs9pass_hugeENS_4HugeE(
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// OGCG: define{{.*}} void @_ZN13check_structs8ret_hugeEv{{.*}}(ptr dead_on_unwind noalias writable sret({{[^)]+}}) align 4 %
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// OGCG: define{{.*}} void @_ZN13check_structs9pass_hugeENS_4HugeE{{.*}}(ptr noundef
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} // namespace check_structs
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//************ Passing unions by value
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namespace check_unions {
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union Trivial {
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int a;
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};
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Trivial ret_trivial() { return {}; }
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void pass_trivial(Trivial e) {}
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// CIR-LABEL: cir.func {{.*}} @_ZN12check_unions11ret_trivialEv
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// CIR-LABEL: cir.func {{.*}} @_ZN12check_unions12pass_trivialENS_7TrivialE
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// LLVM-LABEL: define {{.*}} @_ZN12check_unions11ret_trivialEv(
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// LLVM-LABEL: define {{.*}} void @_ZN12check_unions12pass_trivialENS_7TrivialE(
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// OGCG: define{{.*}} i32 @_ZN12check_unions11ret_trivialEv
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// OGCG: define{{.*}} void @_ZN12check_unions12pass_trivialENS_7TrivialE{{.*}}(i32 %
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union NoCopy {
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int a;
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NoCopy(NoCopy &) = delete;
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};
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NoCopy ret_nocopy() { return {}; }
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void pass_nocopy(NoCopy e) {}
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// CIR-LABEL: cir.func {{.*}} @_ZN12check_unions10ret_nocopyEv
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// CIR-LABEL: cir.func {{.*}} @_ZN12check_unions11pass_nocopyENS_6NoCopyE
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// LLVM-LABEL: define {{.*}} @_ZN12check_unions10ret_nocopyEv(
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// LLVM-LABEL: define {{.*}} void @_ZN12check_unions11pass_nocopyENS_6NoCopyE(
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// OGCG: define{{.*}} void @_ZN12check_unions10ret_nocopyEv{{.*}}(ptr dead_on_unwind noalias writable sret({{[^)]+}}) align 4 %
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// OGCG: define{{.*}} void @_ZN12check_unions11pass_nocopyENS_6NoCopyE{{.*}}(ptr noundef dead_on_return %
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} // namespace check_unions
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//************ Passing `this` pointers
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namespace check_this {
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struct Object {
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int data[];
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Object() {
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this->data[0] = 0;
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}
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int getData() {
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return this->data[0];
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}
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Object *getThis() {
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return this;
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}
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};
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void use_object() {
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Object obj;
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obj.getData();
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obj.getThis();
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}
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// CIR-LABEL: cir.func {{.*}} @_ZN10check_this10use_objectEv
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// CIR: cir.call @_ZN10check_this6ObjectC1Ev
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// CIR: cir.call @_ZN10check_this6Object7getDataEv
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// CIR: cir.call @_ZN10check_this6Object7getThisEv
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// this pointer: noundef nonnull dereferenceable align
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// LLVM: define linkonce_odr void @_ZN10check_this6Object{{.*}}(ptr noundef nonnull align 4 dereferenceable(1) %
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// LLVM: define linkonce_odr noundef i32 @_ZN10check_this6Object7getDataEv(ptr noundef nonnull align 4 dereferenceable(1) %
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// LLVM: define linkonce_odr noundef ptr @_ZN10check_this6Object7getThisEv(ptr noundef nonnull align 4 dereferenceable(1) %
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// OGCG: define linkonce_odr void @_ZN10check_this6ObjectC1Ev(ptr noundef nonnull align 4 dereferenceable(1) %
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// OGCG: define linkonce_odr noundef i32 @_ZN10check_this6Object7getDataEv(ptr noundef nonnull align 4 dereferenceable(1) %
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// OGCG: define linkonce_odr noundef ptr @_ZN10check_this6Object7getThisEv(ptr noundef nonnull align 4 dereferenceable(1) %
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} // namespace check_this
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//************ Passing vector types
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namespace check_vecs {
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typedef int __attribute__((vector_size(12))) i32x3;
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i32x3 ret_vec() {
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return {};
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}
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void pass_vec(i32x3 v) {
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}
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// CIR-LABEL: cir.func {{.*}} @_ZN10check_vecs7ret_vecEv
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// CIR-LABEL: cir.func {{.*}} @_ZN10check_vecs8pass_vecEDv3_i
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// LLVM: define {{.*}} noundef <3 x i32> @_ZN10check_vecs7ret_vecEv(
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// LLVM: define {{.*}} void @_ZN10check_vecs8pass_vecEDv3_i(<3 x i32> noundef %
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// OGCG: define {{.*}} noundef <3 x i32> @_ZN10check_vecs7ret_vecEv(
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// OGCG: define {{.*}} void @_ZN10check_vecs8pass_vecEDv3_i(<3 x i32> noundef %
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} // namespace check_vecs
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//************ Passing exotic types
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namespace check_exotic {
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struct Object {
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int mfunc();
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int mdata;
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};
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typedef int Object::*mdptr;
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typedef int (Object::*mfptr)();
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typedef decltype(nullptr) nullptr_t;
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typedef int (*arrptr)[32];
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typedef int (*fnptr)(int);
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arrptr ret_arrptr() {
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return nullptr;
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}
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fnptr ret_fnptr() {
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return nullptr;
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}
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mdptr ret_mdptr() {
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return nullptr;
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}
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mfptr ret_mfptr() {
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return nullptr;
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}
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nullptr_t ret_npt() {
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return nullptr;
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}
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void pass_npt(nullptr_t t) {
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}
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_BitInt(3) ret_BitInt() {
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return 0;
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}
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void pass_BitInt(_BitInt(3) e) {
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}
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void pass_large_BitInt(_BitInt(127) e) {
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}
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// Pointers to arrays/functions: always noundef
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// CIR-LABEL: cir.func {{.*}} @_ZN12check_exotic10ret_arrptrEv
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// CIR-LABEL: cir.func {{.*}} @_ZN12check_exotic9ret_fnptrEv
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// LLVM: define {{.*}} noundef ptr @_ZN12check_exotic10ret_arrptrEv(
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// LLVM: define {{.*}} noundef ptr @_ZN12check_exotic9ret_fnptrEv(
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// OGCG: define {{.*}} noundef ptr @_ZN12check_exotic10ret_arrptrEv(
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// OGCG: define {{.*}} noundef ptr @_ZN12check_exotic9ret_fnptrEv(
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// Member pointers: never noundef
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// CIR-LABEL: cir.func {{.*}} @_ZN12check_exotic9ret_mdptrEv
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// CIR-LABEL: cir.func {{.*}} @_ZN12check_exotic9ret_mfptrEv
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// LLVM: define {{.*}} i64 @_ZN12check_exotic9ret_mdptrEv(
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// LLVM: define {{.*}} { i64, i64 } @_ZN12check_exotic9ret_mfptrEv(
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// OGCG: define {{.*}} i64 @_ZN12check_exotic9ret_mdptrEv(
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// OGCG: define {{.*}} { i64, i64 } @_ZN12check_exotic9ret_mfptrEv(
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// nullptr_t: never noundef
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// CIR-LABEL: cir.func {{.*}} @_ZN12check_exotic7ret_nptEv
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// CIR-LABEL: cir.func {{.*}} @_ZN12check_exotic8pass_nptEDn
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// LLVM: define {{.*}} ptr @_ZN12check_exotic7ret_nptEv(
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// LLVM: define {{.*}} void @_ZN12check_exotic8pass_nptEDn(ptr %
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// OGCG: define {{.*}} ptr @_ZN12check_exotic7ret_nptEv(
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// OGCG: define {{.*}} void @_ZN12check_exotic8pass_nptEDn(ptr %
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// _BitInt types
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// CIR-LABEL: cir.func {{.*}} @_ZN12check_exotic10ret_BitIntEv
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// CIR-LABEL: cir.func {{.*}} @_ZN12check_exotic11pass_BitIntEDB3_
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// CIR-LABEL: cir.func {{.*}} @_ZN12check_exotic17pass_large_BitIntEDB127_
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// LLVM: define {{.*}} i3 @_ZN12check_exotic10ret_BitIntEv(
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// LLVM: define {{.*}} void @_ZN12check_exotic11pass_BitIntEDB3_(i3 %
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// LLVM: define {{.*}} void @_ZN12check_exotic17pass_large_BitIntEDB127_(i127 %
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// OGCG: define {{.*}} noundef signext i3 @_ZN12check_exotic10ret_BitIntEv(
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// OGCG: define {{.*}} void @_ZN12check_exotic11pass_BitIntEDB3_(i3 noundef signext %
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// OGCG: define {{.*}} void @_ZN12check_exotic17pass_large_BitIntEDB127_(i64 noundef %{{.*}}, i64 noundef %
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} // namespace check_exotic
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