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
16 lines
691 B
C++
16 lines
691 B
C++
// RUN: %clang_cc1 -fms-extensions -triple i686-pc-windows-msvc %s -emit-llvm -o - | FileCheck %s
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struct A {
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virtual void __fastcall f(int a, int b);
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};
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void (__fastcall A::*doit())(int, int) {
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return &A::f;
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}
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// CHECK: define linkonce_odr x86_fastcallcc void @"??_9A@@$BA@AI"(%struct.A* inreg noundef %this, ...) {{.*}} comdat align 2 {
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// CHECK: [[VPTR:%.*]] = getelementptr inbounds void (%struct.A*, ...)*, void (%struct.A*, ...)** %{{.*}}, i64 0
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// CHECK: [[CALLEE:%.*]] = load void (%struct.A*, ...)*, void (%struct.A*, ...)** [[VPTR]]
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// CHECK: musttail call x86_fastcallcc void (%struct.A*, ...) [[CALLEE]](%struct.A* inreg noundef %{{.*}}, ...)
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// CHECK: ret void
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// CHECK: }
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