aacfbb953e
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 [Clang/Test]: Rename enable_noundef_analysis to disable-noundef-analysis and turn it off by default (2) This patch updates test files after D105169. Autogenerated test codes are changed by `utils/update_cc_test_checks.py,` and non-autogenerated test codes are changed as follows: (1) I wrote a python script that (partially) updates the tests using regex: {F18594904} The script is not perfect, but I believe it gives hints about which patterns are updated to have `noundef` attached. (2) The remaining tests are updated manually. Reviewed By: eugenis Differential Revision: https://reviews.llvm.org/D108453 Resolve lit failures in clang after 8ca4b3e's land Fix lit test failures in clang-ppc* and clang-x64-windows-msvc Fix missing failures in clang-ppc64be* and retry fixing clang-x64-windows-msvc Fix internal_clone(aarch64) inline assembly
32 lines
829 B
C++
32 lines
829 B
C++
// Test that correct vtable ptr and type metadata are passed to llvm.type.test
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// Related to Bugzilla 43390.
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// RUN: %clang_cc1 -triple x86_64-unknown-linux -fvisibility hidden -std=c++11 -fsanitize=cfi-nvcall -emit-llvm -o - %s | FileCheck %s
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class A1 {
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public:
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virtual int f1() = 0;
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};
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class A2 {
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public:
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virtual int f2() = 0;
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};
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class B : public A1, public A2 {
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public:
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int f2() final { return 1; }
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int f1() final { return 2; }
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};
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// CHECK-LABEL: define hidden noundef i32 @_Z3foov
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int foo() {
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B b;
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return static_cast<A2*>(&b)->f2();
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// CHECK: [[P:%[^ ]*]] = bitcast %class.B* %b to i8**
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// CHECK: [[V:%[^ ]*]] = load i8*, i8** [[P]], align 8
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// CHECK: call i1 @llvm.type.test(i8* [[V]], metadata !"_ZTS1B")
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// CHECK: call i1 @llvm.type.test(i8* [[V]], metadata !"all-vtables")
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}
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