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
39 lines
1.3 KiB
C++
39 lines
1.3 KiB
C++
// RUN: %clang_cc1 -fexceptions -triple x86_64-windows-msvc -debug-info-kind=limited -gcodeview -fdeclspec -S -emit-llvm %s -o - | FileCheck %s
|
|
|
|
struct Foo {
|
|
int x;
|
|
};
|
|
struct Bar {
|
|
int y;
|
|
};
|
|
extern Foo *gv_foo;
|
|
extern Bar *gv_bar;
|
|
extern "C" void doit() {
|
|
gv_foo = new Foo();
|
|
gv_bar = new Bar();
|
|
}
|
|
|
|
// CHECK-LABEL: define {{.*}}void @doit
|
|
// CHECK: call {{.*}} i8* {{.*}}@"??2@YAPEAX_K@Z"(i64 noundef 4) {{.*}} !heapallocsite [[DBG_FOO:!.*]]
|
|
// CHECK: call {{.*}} i8* {{.*}}@"??2@YAPEAX_K@Z"(i64 noundef 4) {{.*}} !heapallocsite [[DBG_BAR:!.*]]
|
|
|
|
extern "C" void useinvoke() {
|
|
struct HasDtor {
|
|
~HasDtor() { delete gv_foo; }
|
|
} o;
|
|
gv_foo = new Foo();
|
|
}
|
|
|
|
// CHECK-LABEL: define {{.*}}void @useinvoke
|
|
// CHECK: invoke {{.*}} i8* {{.*}}@"??2@YAPEAX_K@Z"(i64 noundef 4)
|
|
// CHECK-NEXT: to label {{.*}} unwind label {{.*}} !heapallocsite [[DBG_FOO]]
|
|
|
|
// CHECK: [[DBG_FOO]] = distinct !DICompositeType(tag: DW_TAG_structure_type,
|
|
// CHECK-SAME: name: "Foo"
|
|
// CHECK: [[DBG_BAR]] = distinct !DICompositeType(tag: DW_TAG_structure_type,
|
|
// CHECK-SAME: name: "Bar"
|
|
|
|
// a new expression in a default arg has caused crashes in the past, add here to test that edge case
|
|
void foo(int *a = new int) {}
|
|
void bar() { foo(); }
|