derek.holloway
7502bf64a4
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317 lines
10 KiB
C++
317 lines
10 KiB
C++
// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -std=c++11 -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-unknown-linux-gnu -std=c++11 -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-unknown-linux-gnu -std=c++11 -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 17 cases from clang/test/CodeGenCXX/trivial_abi.cpp, adapted for
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// x86_64-unknown-linux-gnu with CIR/LLVM/OGCG checks.
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struct __attribute__((trivial_abi)) Small {
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int *p;
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Small();
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~Small();
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Small(const Small &) noexcept;
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Small &operator=(const Small &);
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};
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struct __attribute__((trivial_abi)) Large {
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int *p;
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int a[128];
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Large();
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~Large();
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Large(const Large &) noexcept;
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Large &operator=(const Large &);
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};
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struct Trivial { int a; };
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struct NonTrivial {
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NonTrivial();
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~NonTrivial();
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int a;
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};
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// --- Case 17: PR42961 lambda returning Small via __invoke ---
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// CIR emits lambda internals before user functions, so this CIR check
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// must come first to match CIR emission order.
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Small (*fp)() = []() -> Small { return Small(); };
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// CIR-LABEL: cir.func {{.*}} @{{.*}}__invokeEv
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// CIR: cir.call @{{.*}}clEv
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// LLVM-LABEL: define {{.*}} @{{.*}}__invokeEv
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// LLVM: call {{.*}} @{{.*}}clEv
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// --- Case 1: D0::m0 thunk returning trivial_abi Small ---
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struct B0 { virtual Small m0(); };
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struct B1 { virtual Small m0(); };
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struct D0 : B0, B1 { Small m0() override; };
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Small D0::m0() { return {}; }
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// CIR-LABEL: cir.func {{.*}} @_ZThn8_N2D02m0Ev
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// CIR: cir.call @_ZN2D02m0Ev
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// LLVM-LABEL: define {{.*}} @_ZN2D02m0Ev(
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// LLVM-LABEL: define {{.*}} @_ZThn8_N2D02m0Ev(
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// LLVM: getelementptr i8, ptr {{.*}}, i64 -8
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// LLVM: call {{.*}} @_ZN2D02m0Ev(
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// OGCG-LABEL: define {{.*}} @_ZN2D02m0Ev(
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// OGCG-LABEL: define {{.*}} @_ZThn8_N2D02m0Ev(
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// OGCG: getelementptr inbounds i8, ptr {{.*}}, i64 -8
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// OGCG: {{.*}}call {{.*}} @_ZN2D02m0Ev(
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// --- Case 2: testParamSmall ---
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void testParamSmall(Small a) noexcept {}
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// CIR-LABEL: cir.func {{.*}} @_Z14testParamSmall5Small
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// CIR: cir.return
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// LLVM-LABEL: define {{.*}} void @_Z14testParamSmall5Small(
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// LLVM: ret void
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// OGCG-LABEL: define {{.*}} void @_Z14testParamSmall5Small(ptr %a.coerce)
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// OGCG: call {{.*}} @_ZN5SmallD1Ev(
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// OGCG: ret void
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// --- Case 3: testReturnSmall ---
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Small testReturnSmall() {
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Small t;
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return t;
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}
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// CIR-LABEL: cir.func {{.*}} @_Z15testReturnSmallv
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// CIR: cir.call @_ZN5SmallC1Ev
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// LLVM-LABEL: define {{.*}} @_Z15testReturnSmallv(
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// LLVM: call void @_ZN5SmallC1Ev(
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// OGCG-LABEL: define {{.*}} ptr @_Z15testReturnSmallv(
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// OGCG: call {{.*}} @_ZN5SmallC1Ev(
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// --- Case 4: testCallSmall0 (local copy + callee-destructed param) ---
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void testCallSmall0() {
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Small t;
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testParamSmall(t);
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}
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// CIR-LABEL: cir.func {{.*}} @_Z14testCallSmall0v
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// CIR: cir.call @_ZN5SmallC1Ev
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// CIR: cir.call @_ZN5SmallC1ERKS_
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// CIR: cir.call @_Z14testParamSmall5Small
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// LLVM-LABEL: define {{.*}} void @_Z14testCallSmall0v(
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// LLVM: call void @_ZN5SmallC1Ev(
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// LLVM: call void @_ZN5SmallC1ERKS_(
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// LLVM: call void @_Z14testParamSmall5Small(
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// OGCG-LABEL: define {{.*}} void @_Z14testCallSmall0v(
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// OGCG: call {{.*}} @_ZN5SmallC1Ev(
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// OGCG: call {{.*}} @_ZN5SmallC1ERKS_(
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// OGCG: call void @_Z14testParamSmall5Small(
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// --- Case 5: testCallSmall1 (pass returned value directly) ---
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void testCallSmall1() {
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testParamSmall(testReturnSmall());
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}
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// CIR-LABEL: cir.func {{.*}} @_Z14testCallSmall1v
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// CIR: cir.call @_Z15testReturnSmallv
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// CIR: cir.call @_Z14testParamSmall5Small
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// LLVM-LABEL: define {{.*}} void @_Z14testCallSmall1v(
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// LLVM: call {{.*}} @_Z15testReturnSmallv(
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// LLVM: call void @_Z14testParamSmall5Small(
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// OGCG-LABEL: define {{.*}} void @_Z14testCallSmall1v(
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// OGCG: call {{.*}} @_Z15testReturnSmallv()
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// OGCG: call void @_Z14testParamSmall5Small(
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// --- Case 6: testIgnoredSmall (discard return, must destruct) ---
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void testIgnoredSmall() {
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testReturnSmall();
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}
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// CIR-LABEL: cir.func {{.*}} @_Z16testIgnoredSmallv
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// CIR: cir.call @_Z15testReturnSmallv
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// CIR: cir.call @_ZN5SmallD1Ev
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// LLVM-LABEL: define {{.*}} void @_Z16testIgnoredSmallv(
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// LLVM: call {{.*}} @_Z15testReturnSmallv(
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// LLVM: call void @_ZN5SmallD1Ev(
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// OGCG-LABEL: define {{.*}} void @_Z16testIgnoredSmallv(
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// OGCG: call {{.*}} @_Z15testReturnSmallv()
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// OGCG: call {{.*}} @_ZN5SmallD1Ev(
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// --- Case 7: testParamLarge ---
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void testParamLarge(Large a) noexcept {}
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// CIR-LABEL: cir.func {{.*}} @_Z14testParamLarge5Large
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// CIR: cir.return
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// LLVM-LABEL: define {{.*}} void @_Z14testParamLarge5Large(
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// LLVM: ret void
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// OGCG-LABEL: define {{.*}} void @_Z14testParamLarge5Large(ptr noundef byval(%struct.Large) align 8 %a)
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// OGCG: call {{.*}} @_ZN5LargeD1Ev(
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// OGCG: ret void
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// --- Case 8: testReturnLarge ---
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Large testReturnLarge() {
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Large t;
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return t;
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}
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// CIR-LABEL: cir.func {{.*}} @_Z15testReturnLargev
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// CIR: cir.call @_ZN5LargeC1Ev
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// LLVM-LABEL: define {{.*}} @_Z15testReturnLargev(
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// LLVM: call void @_ZN5LargeC1Ev(
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// OGCG-LABEL: define {{.*}} void @_Z15testReturnLargev(ptr {{.*}}sret(%struct.Large)
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// OGCG: call {{.*}} @_ZN5LargeC1Ev(
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// --- Case 9: testCallLarge0 (local copy + callee-destructed param) ---
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void testCallLarge0() {
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Large t;
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testParamLarge(t);
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}
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// CIR-LABEL: cir.func {{.*}} @_Z14testCallLarge0v
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// CIR: cir.call @_ZN5LargeC1Ev
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// CIR: cir.call @_ZN5LargeC1ERKS_
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// CIR: cir.call @_Z14testParamLarge5Large
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// LLVM-LABEL: define {{.*}} void @_Z14testCallLarge0v(
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// LLVM: call void @_ZN5LargeC1Ev(
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// LLVM: call void @_ZN5LargeC1ERKS_(
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// LLVM: call void @_Z14testParamLarge5Large(
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// OGCG-LABEL: define {{.*}} void @_Z14testCallLarge0v(
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// OGCG: call {{.*}} @_ZN5LargeC1Ev(
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// OGCG: call {{.*}} @_ZN5LargeC1ERKS_(
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// OGCG: call void @_Z14testParamLarge5Large(
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// --- Case 10: testCallLarge1 (pass returned value directly) ---
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void testCallLarge1() {
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testParamLarge(testReturnLarge());
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}
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// CIR-LABEL: cir.func {{.*}} @_Z14testCallLarge1v
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// CIR: cir.call @_Z15testReturnLargev
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// CIR: cir.call @_Z14testParamLarge5Large
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// LLVM-LABEL: define {{.*}} void @_Z14testCallLarge1v(
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// LLVM: call {{.*}} @_Z15testReturnLargev(
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// LLVM: call void @_Z14testParamLarge5Large(
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// OGCG-LABEL: define {{.*}} void @_Z14testCallLarge1v(
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// OGCG: call void @_Z15testReturnLargev(
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// OGCG: call void @_Z14testParamLarge5Large(
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// --- Case 11: testIgnoredLarge (discard return, must destruct) ---
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void testIgnoredLarge() {
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testReturnLarge();
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}
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// CIR-LABEL: cir.func {{.*}} @_Z16testIgnoredLargev
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// CIR: cir.call @_Z15testReturnLargev
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// CIR: cir.call @_ZN5LargeD1Ev
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// LLVM-LABEL: define {{.*}} void @_Z16testIgnoredLargev(
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// LLVM: call {{.*}} @_Z15testReturnLargev(
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// LLVM: call void @_ZN5LargeD1Ev(
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// OGCG-LABEL: define {{.*}} void @_Z16testIgnoredLargev(
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// OGCG: call void @_Z15testReturnLargev(
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// OGCG: call {{.*}} @_ZN5LargeD1Ev(
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// --- Case 12: testReturnHasTrivial ---
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Trivial testReturnHasTrivial() {
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Trivial t;
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return t;
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}
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// CIR-LABEL: cir.func {{.*}} @_Z20testReturnHasTrivialv
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// CIR: cir.return
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// LLVM-LABEL: define {{.*}} @_Z20testReturnHasTrivialv(
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// LLVM: ret
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// OGCG-LABEL: define {{.*}} i32 @_Z20testReturnHasTrivialv(
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// OGCG: ret i32
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// --- Case 13: testReturnHasNonTrivial ---
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NonTrivial testReturnHasNonTrivial() {
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NonTrivial t;
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return t;
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}
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// CIR-LABEL: cir.func {{.*}} @_Z23testReturnHasNonTrivialv
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// CIR: cir.call @_ZN10NonTrivialC1Ev
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// LLVM-LABEL: define {{.*}} @_Z23testReturnHasNonTrivialv(
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// LLVM: call void @_ZN10NonTrivialC1Ev(
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// OGCG-LABEL: define {{.*}} void @_Z23testReturnHasNonTrivialv(ptr {{.*}}sret(%struct.NonTrivial)
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// OGCG: call {{.*}} @_ZN10NonTrivialC1Ev(
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// --- Case 14: testExceptionSmall ---
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// CIR does not emit invoke/landingpad; the non-unwinding call sequence
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// is tested here. OGCG verifies the full EH path.
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void calleeExceptionSmall(Small, Small);
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void testExceptionSmall() {
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calleeExceptionSmall(Small(), Small());
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}
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// CIR-LABEL: cir.func {{.*}} @_Z18testExceptionSmallv
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// CIR: cir.call @_ZN5SmallC1Ev
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// CIR: cir.call @_ZN5SmallC1Ev
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// CIR: cir.call @_Z20calleeExceptionSmall5SmallS_
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// LLVM-LABEL: define {{.*}} void @_Z18testExceptionSmallv(
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// LLVM: call void @_ZN5SmallC1Ev(
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// LLVM: call void @_ZN5SmallC1Ev(
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// LLVM: call void @_Z20calleeExceptionSmall5SmallS_(
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// OGCG-LABEL: define {{.*}} void @_Z18testExceptionSmallv()
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// OGCG: call {{.*}} @_ZN5SmallC1Ev(
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// OGCG: call {{.*}} @_ZN5SmallC1Ev(
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// OGCG: call void @_Z20calleeExceptionSmall5SmallS_(
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// --- Case 15: testExceptionLarge ---
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void calleeExceptionLarge(Large, Large);
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void testExceptionLarge() {
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calleeExceptionLarge(Large(), Large());
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}
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// CIR-LABEL: cir.func {{.*}} @_Z18testExceptionLargev
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// CIR: cir.call @_ZN5LargeC1Ev
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// CIR: cir.call @_ZN5LargeC1Ev
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// CIR: cir.call @_Z20calleeExceptionLarge5LargeS_
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// LLVM-LABEL: define {{.*}} void @_Z18testExceptionLargev(
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// LLVM: call void @_ZN5LargeC1Ev(
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// LLVM: call void @_ZN5LargeC1Ev(
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// LLVM: call void @_Z20calleeExceptionLarge5LargeS_(
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// OGCG-LABEL: define {{.*}} void @_Z18testExceptionLargev()
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// OGCG: call {{.*}} @_ZN5LargeC1Ev(
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// OGCG: call {{.*}} @_ZN5LargeC1Ev(
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// OGCG: call void @_Z20calleeExceptionLarge5LargeS_(
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// --- Case 16: GH93040 packed trivial_abi with placement new ---
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void* operator new(unsigned long, void*);
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namespace GH93040 {
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struct [[clang::trivial_abi]] S {
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char a;
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int x;
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__attribute((aligned(2))) char y;
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S();
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} __attribute((packed));
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S f();
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void g(S* s) { new(s) S(f()); }
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}
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// CIR-LABEL: cir.func {{.*}} @_ZN7GH930401gEPNS_1SE
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// CIR: cir.call @_ZN7GH930401fEv
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// LLVM-LABEL: define {{.*}} void @_ZN7GH930401gEPNS_1SE(
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// LLVM: call {{.*}} @_ZN7GH930401fEv(
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// OGCG-LABEL: define {{.*}} void @_ZN7GH930401gEPNS_1SE(
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// OGCG: call void @_ZN7GH930401fEv(ptr {{.*}}sret(
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// Lambda __invoke comes last in OGCG (internal linkage).
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// OGCG-LABEL: define {{.*}} @{{.*}}__invokeEv
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// OGCG: call {{.*}} @{{.*}}clEv
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