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
23 lines
757 B
C++
23 lines
757 B
C++
// Check that we call llvm.load.relative() on a vtable function call.
|
|
|
|
// RUN: %clang_cc1 %s -triple=aarch64-unknown-fuchsia -O3 -S -o - -emit-llvm | FileCheck %s
|
|
|
|
// CHECK: define{{.*}} void @_Z5A_fooP1A(%class.A* noundef %a) local_unnamed_addr
|
|
// CHECK-NEXT: entry:
|
|
// CHECK-NEXT: [[this:%[0-9]+]] = bitcast %class.A* %a to i8**
|
|
// CHECK-NEXT: %vtable1 = load i8*, i8** [[this]]
|
|
// CHECK-NEXT: [[func_ptr:%[0-9]+]] = tail call i8* @llvm.load.relative.i32(i8* %vtable1, i32 0)
|
|
// CHECK-NEXT: [[func:%[0-9]+]] = bitcast i8* [[func_ptr]] to void (%class.A*)*
|
|
// CHECK-NEXT: tail call void [[func]](%class.A* {{[^,]*}} %a)
|
|
// CHECK-NEXT: ret void
|
|
// CHECK-NEXT: }
|
|
|
|
class A {
|
|
public:
|
|
virtual void foo();
|
|
};
|
|
|
|
void A_foo(A *a) {
|
|
a->foo();
|
|
}
|