1b1c8d83d3
Turning on `enable_noundef_analysis` flag allows better codegen by removing freeze instructions. I modified clang by renaming `enable_noundef_analysis` flag to `disable-noundef-analysis` and turning it off by default. Test updates are made as a separate patch: D108453 Reviewed By: eugenis Differential Revision: https://reviews.llvm.org/D105169
52 lines
2.0 KiB
C++
52 lines
2.0 KiB
C++
// RUN: %clang_cc1 %s -triple %itanium_abi_triple -emit-llvm -o - | FileCheck %s
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struct basic_ios{~basic_ios(); };
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template<typename _CharT> struct basic_istream : virtual public basic_ios {
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virtual ~basic_istream(){}
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};
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template<typename _CharT> struct basic_iostream : public basic_istream<_CharT>
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{
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virtual ~basic_iostream(){}
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};
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basic_iostream<char> res;
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int main() {
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}
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// basic_iostream's complete dtor calls its base dtor, then its
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// virtual base's dtor.
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// CHECK: define linkonce_odr {{.*}} @_ZN14basic_iostreamIcED1Ev(%struct.basic_iostream* {{.*}}%this) unnamed_addr
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// CHECK: call {{.*}} @_ZN14basic_iostreamIcED2Ev
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// CHECK: call {{.*}} @_ZN9basic_iosD2Ev
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// basic_istream's complete dtor calls the base dtor,
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// then its virtual base's base dtor.
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// CHECK: define linkonce_odr {{.*}} @_ZN13basic_istreamIcED1Ev(%struct.basic_istream* {{.*}}%this) unnamed_addr
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// CHECK: call {{.*}} @_ZN13basic_istreamIcED2Ev
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// CHECK: call {{.*}} @_ZN9basic_iosD2Ev
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// basic_istream's deleting dtor calls the complete dtor, then
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// operator delete().
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// CHECK: define linkonce_odr {{.*}} @_ZN13basic_istreamIcED0Ev(%struct.basic_istream* {{.*}}%this) unnamed_addr
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// CHECK: call {{.*}} @_ZN13basic_istreamIcED1Ev
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// CHECK: call {{.*}} @_ZdlPv
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// basic_iostream's deleting dtor calls its complete dtor, then
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// operator delete().
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// CHECK: define linkonce_odr {{.*}} @_ZN14basic_iostreamIcED0Ev(%struct.basic_iostream* {{.*}}%this) unnamed_addr
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// CHECK: call {{.*}} @_ZN14basic_iostreamIcED1Ev
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// CHECK: call {{.*}} @_ZdlPv
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// basic_istream's base dtor is a no-op.
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// CHECK: define linkonce_odr {{.*}} @_ZN13basic_istreamIcED2Ev(%struct.basic_istream* {{.*}}%this, i8** noundef %vtt) unnamed_addr
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// CHECK-NOT: call
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// CHECK: }
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// basic_iostream's base dtor calls its non-virtual base dtor.
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// CHECK: define linkonce_odr {{.*}} @_ZN14basic_iostreamIcED2Ev(%struct.basic_iostream* {{.*}}%this, i8** noundef %vtt) unnamed_addr
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// CHECK: call {{.*}} @_ZN13basic_istreamIcED2Ev
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// CHECK: }
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