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
21 lines
794 B
C++
21 lines
794 B
C++
// RUN: %clang_cc1 -fms-compatibility -triple x86_64-windows-msvc %s -emit-llvm -o - | FileCheck %s
|
|
|
|
// Make sure we choose the *direct* base path when doing these conversions.
|
|
|
|
// CHECK: %struct.C = type { %struct.A, %struct.B }
|
|
// CHECK: %struct.D = type { %struct.B, %struct.A }
|
|
|
|
struct A { int a; };
|
|
struct B : A { int b; };
|
|
|
|
struct C : A, B { };
|
|
extern "C" A *a_from_c(C *p) { return p; }
|
|
// CHECK-LABEL: define dso_local %struct.A* @a_from_c(%struct.C* noundef %{{.*}})
|
|
// CHECK: bitcast %struct.C* %{{.*}} to %struct.A*
|
|
|
|
struct D : B, A { };
|
|
extern "C" A *a_from_d(D *p) { return p; }
|
|
// CHECK-LABEL: define dso_local %struct.A* @a_from_d(%struct.D* noundef %{{.*}})
|
|
// CHECK: %[[p_i8:[^ ]*]] = bitcast %struct.D* %{{.*}} to i8*
|
|
// CHECK: getelementptr inbounds i8, i8* %[[p_i8]], i64 8
|