derek.holloway
7502bf64a4
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198 lines
11 KiB
C++
198 lines
11 KiB
C++
// RUN: %clang_cc1 -std=c++17 -triple x86_64-unknown-linux-gnu -fclangir -emit-cir -mmlir --mlir-print-ir-before=cir-lowering-prepare %s -o %t.cir 2>&1 | FileCheck %s --check-prefix=CIR-BEFORE-LPP
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// RUN: %clang_cc1 -std=c++17 -triple x86_64-unknown-linux-gnu -fclangir -emit-cir %s -o - | FileCheck %s --check-prefix=CIR
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// RUN: %clang_cc1 -std=c++17 -triple x86_64-unknown-linux-gnu -fclangir -emit-llvm %s -o - | FileCheck %s --check-prefix=LLVM,LLVM-BOTH
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// RUN: %clang_cc1 -std=c++17 -triple x86_64-unknown-linux-gnu -emit-llvm %s -o - | FileCheck %s --check-prefix=OGCG,LLVM-BOTH
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int get_i();
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struct CtorDtor {
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constexpr CtorDtor(int i) : i(i){}
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~CtorDtor(){}
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int i;
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};
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template<typename T>
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thread_local T tls_templ = {get_i()};
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// CIR-BEFORE-LPP-LABEL: cir.global linkonce_odr comdat tls_dyn dyn_tls_refs = <"_ZTW9tls_templIiE", "_ZTH9tls_templIiE", "_ZGV9tls_templIiE"> @_Z9tls_templIiE = ctor : !s32i {
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// CIR-BEFORE-LPP: %[[GET_GLOB:.*]] = cir.get_global thread_local @_Z9tls_templIiE : !cir.ptr<!s32i>
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// CIR-BEFORE-LPP: %[[CALL:.*]] = cir.call @_Z5get_iv() : () -> (!s32i {llvm.noundef})
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// CIR-BEFORE-LPP: cir.store{{.*}} %[[CALL]], %[[GET_GLOB]] : !s32i, !cir.ptr<!s32i>
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// CIR-BEFORE-LPP: }
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//
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// CIR-BEFORE-LPP-LABEL: cir.global linkonce_odr comdat tls_dyn dyn_tls_refs = <"_ZTW9tls_templI8CtorDtorE", "_ZTH9tls_templI8CtorDtorE", "_ZGV9tls_templI8CtorDtorE"> @_Z9tls_templI8CtorDtorE = ctor : !rec_CtorDtor {
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// CIR-BEFORE-LPP: %[[GET_GLOB:.*]] = cir.get_global thread_local @_Z9tls_templI8CtorDtorE : !cir.ptr<!rec_CtorDtor>
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// CIR-BEFORE-LPP: %[[CALL:.*]] = cir.call @_Z5get_iv() : () -> (!s32i {llvm.noundef})
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// CIR-BEFORE-LPP: cir.call @_ZN8CtorDtorC1Ei(%[[GET_GLOB]], %[[CALL]]) : (!cir.ptr<!rec_CtorDtor>
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// CIR-BEFORE-LPP: } dtor {
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// CIR-BEFORE-LPP: %[[GET_GLOB:.*]] = cir.get_global thread_local @_Z9tls_templI8CtorDtorE : !cir.ptr<!rec_CtorDtor>
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// CIR-BEFORE-LPP: cir.call @_ZN8CtorDtorD1Ev(%[[GET_GLOB]]) : (!cir.ptr<!rec_CtorDtor>) -> ()
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// CIR-BEFORE-LPP: }
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// Wrapper: Ctor/Dtor
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// CIR-LABEL: cir.func comdat weak_odr private hidden @_ZTW9tls_templI8CtorDtorE() -> !cir.ptr<!rec_CtorDtor> {
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// CIR: cir.call @_ZTH9tls_templI8CtorDtorE() : () -> ()
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// CIR: %[[GET_GLOB:.*]] = cir.get_global thread_local @_Z9tls_templI8CtorDtorE : !cir.ptr<!rec_CtorDtor>
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// CIR: cir.return %[[GET_GLOB]] : !cir.ptr<!rec_CtorDtor>
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// CIR:}
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// Alias: Ctor/Dtor:
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// CIR: cir.func linkonce_odr @_ZTH9tls_templI8CtorDtorE() alias(@[[CTOR_DTOR_INIT:[^)]*]])
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// TLS Guard: Ctor/Dtor:
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// CIR: cir.global "private" linkonce_odr comdat tls_dyn @_ZGV9tls_templI8CtorDtorE = #cir.int<0> : !s64i
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// Wrapper: int
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// CIR-LABEL: cir.func comdat weak_odr private hidden @_ZTW9tls_templIiE() -> !cir.ptr<!s32i>
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// CIR: cir.call @_ZTH9tls_templIiE() : () -> ()
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// CIR: %[[GET_GLOB:.*]] = cir.get_global thread_local @_Z9tls_templIiE : !cir.ptr<!s32i>
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// CIR: cir.return %[[GET_GLOB]] : !cir.ptr<!s32i>
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// CIR: }
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// Alias: int
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// CIR: cir.func linkonce_odr @_ZTH9tls_templIiE() alias(@[[INT_INIT:[^)]*]])
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// TLS Guard: int
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// CIR: cir.global "private" linkonce_odr comdat tls_dyn @_ZGV9tls_templIiE = #cir.int<0> : !s64i
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// Global: int
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// CIR: cir.global linkonce_odr comdat tls_dyn dyn_tls_refs = <"_ZTW9tls_templIiE", "_ZTH9tls_templIiE", "_ZGV9tls_templIiE"> @_Z9tls_templIiE = #cir.int<0> : !s32i
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// Init Func: int
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// CIR: cir.func internal private @[[INT_INIT]]() {
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// CIR: %[[GET_GUARD:.*]] = cir.get_global thread_local @_ZGV9tls_templIiE : !cir.ptr<!s64i>
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// CIR: %[[GUARD_CAST:.*]] = cir.cast bitcast %[[GET_GUARD]] : !cir.ptr<!s64i> -> !cir.ptr<!s8i>
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// CIR: %[[LOAD_GUARD:.*]] = cir.load align(8) %[[GUARD_CAST]] : !cir.ptr<!s8i>, !s8i
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// CIR: %[[ZERO:.*]] = cir.const #cir.int<0> : !s8i
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// CIR: %[[ISUNINIT:.*]] = cir.cmp eq %[[LOAD_GUARD]], %[[ZERO]] : !s8i
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// CIR: cir.if %[[ISUNINIT]] {
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// CIR: %[[ONE:.*]] = cir.const #cir.int<1> : !s64i
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// CIR: cir.store %[[ONE]], %[[GET_GUARD]] : !s64i, !cir.ptr<!s64i>
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// CIR: %[[GET_GLOB:.*]] = cir.get_global thread_local @_Z9tls_templIiE : !cir.ptr<!s32i>
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// CIR: %[[CALL:.*]] = cir.call @_Z5get_iv() : () -> (!s32i {llvm.noundef})
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// CIR: cir.store {{.*}}%[[CALL]], %[[GET_GLOB]] : !s32i, !cir.ptr<!s32i>
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// CIR: }
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// CIR: cir.return
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// CIR: }
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// Global: Ctor/Dotr:
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// CIR: cir.global linkonce_odr comdat tls_dyn dyn_tls_refs = <"_ZTW9tls_templI8CtorDtorE", "_ZTH9tls_templI8CtorDtorE", "_ZGV9tls_templI8CtorDtorE"> @_Z9tls_templI8CtorDtorE = #cir.zero : !rec_CtorDtor
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// Init Func: Ctor/Dtor:
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// CIR: cir.func internal private @[[CTOR_DTOR_INIT]]() {
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// CIR: %[[GET_GUARD:.*]] = cir.get_global thread_local @_ZGV9tls_templI8CtorDtorE : !cir.ptr<!s64i>
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// CIR: %[[GUARD_CAST:.*]] = cir.cast bitcast %[[GET_GUARD]] : !cir.ptr<!s64i> -> !cir.ptr<!s8i>
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// CIR: %[[LOAD_GUARD:.*]] = cir.load align(8) %[[GUARD_CAST]] : !cir.ptr<!s8i>, !s8i
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// CIR: %[[ZERO:.*]] = cir.const #cir.int<0> : !s8i
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// CIR: %[[ISUNINIT:.*]] = cir.cmp eq %[[LOAD_GUARD]], %[[ZERO]] : !s8i
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// CIR: cir.if %[[ISUNINIT]] {
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// CIR: %[[ONE:.*]] = cir.const #cir.int<1> : !s64i
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// CIR: cir.store %[[ONE]], %[[GET_GUARD]] : !s64i, !cir.ptr<!s64i>
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// CIR: %[[GET_GLOB:.*]] = cir.get_global thread_local @_Z9tls_templI8CtorDtorE : !cir.ptr<!rec_CtorDtor>
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// CIR: %[[CALL:.*]] = cir.call @_Z5get_iv() : () -> (!s32i {llvm.noundef})
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// CIR: cir.call @_ZN8CtorDtorC1Ei(%[[GET_GLOB]], %[[CALL]]) : (!cir.ptr<!rec_CtorDtor> {{.*}}, !s32i {llvm.noundef}) -> ()
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// CIR: %[[GET_GLOB:.*]] = cir.get_global thread_local @_Z9tls_templI8CtorDtorE : !cir.ptr<!rec_CtorDtor>
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// CIR: %[[GET_DTOR:.*]] = cir.get_global @_ZN8CtorDtorD1Ev : !cir.ptr<!cir.func<(!cir.ptr<!rec_CtorDtor>)>>
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// CIR: %[[DTOR_FPTR:.*]] = cir.cast bitcast %[[GET_DTOR]] : !cir.ptr<!cir.func<(!cir.ptr<!rec_CtorDtor>)>> -> !cir.ptr<!cir.func<(!cir.ptr<!void>)>>
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// CIR: %[[GLOB_DECAY:.*]] = cir.cast bitcast %[[GET_GLOB:.*]] : !cir.ptr<!rec_CtorDtor> -> !cir.ptr<!void>
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// CIR: %[[DSO_HANDLE:.*]] = cir.get_global @__dso_handle : !cir.ptr<i8>
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// CIR: cir.call @__cxa_thread_atexit(%[[DTOR_FPTR]], %[[GLOB_DECAY]], %[[DSO_HANDLE]]) : (!cir.ptr<!cir.func<(!cir.ptr<!void>)>>, !cir.ptr<!void>, !cir.ptr<i8>) -> ()
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// CIR: }
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// CIR: cir.return
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// CIR: }
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// FIXME: These have inconsistent COMDAT with classic codegen, but we don't
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// currently specify 'comdat' with a name.
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// Guards:
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// LLVM-BOTH-DAG: @_ZGV9tls_templI8CtorDtorE = linkonce_odr thread_local global i64 0, comdat{{.*}}, align 8
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// LLVM-BOTH-DAG: @_ZGV9tls_templIiE = linkonce_odr thread_local global i64 0, comdat{{.*}}, align 8
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// Globals:
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// LLVM-BOTH-DAG: @_Z9tls_templIiE = linkonce_odr thread_local global i32 0, comdat, align 4
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// LLVM-BOTH-DAG: @_Z9tls_templI8CtorDtorE = linkonce_odr thread_local global %struct.CtorDtor zeroinitializer, comdat, align 4
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// Aliases:
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// LLVM-BOTH-DAG: @_ZTH9tls_templI8CtorDtorE = linkonce_odr alias void (), ptr @[[CTOR_DTOR_INIT:.*]]
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// LLVM-BOTH-DAG: @_ZTH9tls_templIiE = linkonce_odr alias void (), ptr @[[INT_INIT:.*]]
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// OGCG Has this first, same check lines as LLVM.
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// OGCG-LABEL: define dso_local void @_Z4usesv()
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// OGCG: call ptr @_ZTW9tls_templIiE()
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// OGCG: call ptr @_ZTW9tls_templI8CtorDtorE()
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// Wrappers: Just opposite ordering, same check lines as LLVM.
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// FIXME: OGCG has these set as 'comdat'. However, CIR doesn't lower comdat to
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// LLVM, so it doesn't show up in the IR here.
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// LLVM-LABEL: define weak_odr hidden {{.*}}ptr @_ZTW9tls_templI8CtorDtorE() {
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// LLVM: call void @_ZTH9tls_templI8CtorDtorE()
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// LLVM: call {{.*}}ptr @llvm.threadlocal.address.p0(ptr {{.*}}@_Z9tls_templI8CtorDtorE)
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// LLVM: }
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// LLVM-LABEL: define weak_odr hidden {{.*}}ptr @_ZTW9tls_templIiE() {
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// LLVM: call void @_ZTH9tls_templIiE()
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// LLVM: call {{.*}}ptr @llvm.threadlocal.address.p0(ptr {{.*}}@_Z9tls_templIiE)
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// LLVM: }
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// OGCG-LABEL: define weak_odr hidden {{.*}}ptr @_ZTW9tls_templIiE() {{.*}} comdat {
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// OGCG: call void @_ZTH9tls_templIiE()
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// OGCG: call {{.*}}ptr @llvm.threadlocal.address.p0(ptr {{.*}}@_Z9tls_templIiE)
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// OGCG: }
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// OGCG-LABEL: define weak_odr hidden {{.*}}ptr @_ZTW9tls_templI8CtorDtorE(){{.*}} comdat {
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// OGCG: call void @_ZTH9tls_templI8CtorDtorE()
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// OGCG: call {{.*}}ptr @llvm.threadlocal.address.p0(ptr {{.*}}@_Z9tls_templI8CtorDtorE)
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// OGCG: }
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// Inits:
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// Note: the differences here are mostly ordering, however there are a few diferences:
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// 1- OGCG skipps the llvm.threadlocal call. We've seen this elsewhere with thread local,
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// so I don't think it is problematic, as it just seems like an early opt.
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// 2- For some reason OGCG generates guards as i64/i8 depending on platform (like with static-local),
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// but ALWAYS treats the load/stores as i8. This is likely a 'bug' in OGCG, but one that
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// doesn't really matter at all.
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// LLVM-BOTH: define internal void @[[INT_INIT]]()
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// LLVM: %[[GET_GUARD:.*]] = call ptr @llvm.threadlocal.address.p0(ptr @_ZGV9tls_templIiE)
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// LLVM: %[[LOAD_GUARD:.*]] = load i8, ptr %[[GET_GUARD]], align 8
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// OGCG: %[[LOAD_GUARD:.*]] = load i8, ptr @_ZGV9tls_templIiE, align 8
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// LLVM-BOTH: %[[ISUNINIT:.*]] = icmp eq i{{.*}} %[[LOAD_GUARD]], 0
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// LLVM-BOTH: br i1 %[[ISUNINIT]]
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//
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// LLVM: store i64 1, ptr %[[GET_GUARD]], align 8
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// OGCG: store i8 1, ptr @_ZGV9tls_templIiE, align 8
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// LLVM: %[[GET_GLOB:.*]] = call {{.*}}ptr @llvm.threadlocal.address.p0(ptr {{.*}}@_Z9tls_templIiE)
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// LLVM: %[[CALL:.*]] = call noundef i32 @_Z5get_iv()
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// OGCG: %[[CALL:.*]] = call noundef i32 @_Z5get_iv()
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// OGCG: %[[GET_GLOB:.*]] = call {{.*}}ptr @llvm.threadlocal.address.p0(ptr {{.*}}@_Z9tls_templIiE)
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// LLVM-BOTH: store i32 %[[CALL]], ptr %[[GET_GLOB]]
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// LLVM-BOTH: define internal void @[[CTOR_DTOR_INIT]]()
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// LLVM: %[[GET_GUARD:.*]] = call ptr @llvm.threadlocal.address.p0(ptr @_ZGV9tls_templI8CtorDtorE)
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// LLVM: %[[LOAD_GUARD:.*]] = load i8, ptr %[[GET_GUARD]], align 8
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// OGCG: %[[LOAD_GUARD:.*]] = load i8, ptr @_ZGV9tls_templI8CtorDtorE, align 8
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// LLVM-BOTH: %[[ISUNINIT:.*]] = icmp eq i{{.*}} %[[LOAD_GUARD]], 0
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// LLVM-BOTH: br i1 %[[ISUNINIT]]
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//
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// LLVM: store i64 1, ptr %[[GET_GUARD]], align 8
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// OGCG: store i8 1, ptr @_ZGV9tls_templI8CtorDtorE, align 8
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//
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// LLVM: %[[GET_GLOB:.*]] = call {{.*}}ptr @llvm.threadlocal.address.p0(ptr {{.*}}@_Z9tls_templI8CtorDtorE)
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// LLVM-BOTH: %[[CALL:.*]] = call noundef i32 @_Z5get_iv()
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// LLVM: call void @_ZN8CtorDtorC1Ei(ptr {{.*}}%[[GET_GLOB]], i32 {{.*}}%[[CALL]])
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// OGCG: call void @_ZN8CtorDtorC1Ei(ptr {{.*}}@_Z9tls_templI8CtorDtorE, i32 {{.*}}%[[CALL]])
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//
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// LLVM: %[[GET_GLOB:.*]] = call ptr @llvm.threadlocal.address.p0(ptr @_Z9tls_templI8CtorDtorE)
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// LLVM: call void @__cxa_thread_atexit(ptr @_ZN8CtorDtorD1Ev, ptr %[[GET_GLOB]], ptr @__dso_handle)
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// OGCG: call i32 @__cxa_thread_atexit(ptr @_ZN8CtorDtorD1Ev, ptr @_Z9tls_templI8CtorDtorE, ptr @__dso_handle)
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// CIR-BEFORE-LPP-LABEL: cir.func{{.*}}@_Z4usesv
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// CIR-LABEL: cir.func{{.*}}@_Z4usesv
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// LLVM-LABEL: define dso_local void @_Z4usesv()
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void uses() {
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auto x = tls_templ<int>;
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// CIR-BEFORE-LPP: cir.get_global thread_local @_Z9tls_templIiE : !cir.ptr<!s32i>
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// CIR: cir.call @_ZTW9tls_templIiE() : () -> !cir.ptr<!s32i>
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// LLVM: call ptr @_ZTW9tls_templIiE()
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auto y = tls_templ<CtorDtor>;
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// CIR-BEFORE-LPP: cir.get_global thread_local @_Z9tls_templI8CtorDtorE : !cir.ptr<!rec_CtorDtor>
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// CIR: cir.call @_ZTW9tls_templI8CtorDtorE() : () -> !cir.ptr<!rec_CtorDtor>
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// LLVM: call ptr @_ZTW9tls_templI8CtorDtorE()
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}
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