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
28 lines
565 B
C++
28 lines
565 B
C++
// RUN: %clang_cc1 -triple x86_64-apple-darwin -emit-llvm %s -o - | \
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// RUN: FileCheck %s
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// RUN: %clang_cc1 -triple i386-apple-darwin -emit-llvm %s -o - | \
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// RUN: FileCheck %s
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struct A {};
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struct B
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{
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operator A&();
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};
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struct D : public B {
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operator A();
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};
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extern B f();
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extern D d();
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int main() {
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const A& rca = f();
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const A& rca2 = d();
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}
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// CHECK: call noundef nonnull align {{[0-9]+}} dereferenceable({{[0-9]+}}) %struct.A* @_ZN1BcvR1AEv
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// CHECK: call noundef nonnull align {{[0-9]+}} dereferenceable({{[0-9]+}}) %struct.A* @_ZN1BcvR1AEv
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