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
34 lines
617 B
C++
34 lines
617 B
C++
// RUN: %clang_cc1 %s -triple i386-unknown-unknown -emit-llvm -o - | FileCheck %s
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// <rdar://problem/7929157> & <rdar://problem/8104369>
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struct A {
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virtual int f() { return 1; }
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};
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struct B {
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virtual int f() { return 2; }
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};
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struct C : A, B {
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virtual int f() { return 3; }
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};
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struct D : C {
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virtual int f() { return 4; }
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};
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static int f(D* d) {
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B* b = d;
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return b->f();
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};
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int g() {
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D d;
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return f(&d);
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}
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// Thunks should be marked as "linkonce ODR" not "weak".
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//
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// CHECK: define linkonce_odr noundef i32 @_ZThn{{[48]}}_N1D1fEv
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// CHECK: define linkonce_odr noundef i32 @_ZThn{{[48]}}_N1C1fEv
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