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
125 lines
2.6 KiB
C++
125 lines
2.6 KiB
C++
// This is an IR generation test because the calculation of visibility
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// during IR gen will cause linkage to be implicitly recomputed and
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// compared against the earlier cached value. If we had a way of
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// testing linkage directly in Sema, that would be better.
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// RUN: %clang_cc1 -Werror -Wno-non-c-typedef-for-linkage -triple x86_64-apple-darwin10 -emit-llvm %s -o - | FileCheck %s
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// CHECK: @_ZZN5test61A3fooEvE3bar = linkonce_odr global i32 0, align 4
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// PR8926
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namespace test0 {
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typedef struct {
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void *foo() { return 0; }
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} A;
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// CHECK: define linkonce_odr noundef i8* @_ZN5test01A3fooEv(
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void test(A *a) {
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a->foo();
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}
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}
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namespace test1 {
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typedef struct {
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template <unsigned n> void *foo() { return 0; }
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void foo() {
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foo<0>();
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}
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} A;
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// CHECK: define linkonce_odr void @_ZN5test11A3fooEv(
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// another at the end
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void test(A *a) {
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a->foo();
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}
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}
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namespace test2 {
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typedef struct {
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template <unsigned n> struct B {
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void *foo() { return 0; }
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};
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void foo(B<0> *b) {
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b->foo();
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}
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} A;
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// CHECK: define linkonce_odr void @_ZN5test21A3fooEPNS0_1BILj0EEE(
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void test(A *a) {
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a->foo(0);
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}
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}
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namespace test3 {
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namespace { struct A {}; }
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// CHECK: define internal void @_ZN5test34testENS_12_GLOBAL__N_11AE(
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void test(A a) {}
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void force() { test(A()); }
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// CHECK: define{{.*}} void @test3(
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extern "C" void test3(A a) {}
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}
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namespace {
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// CHECK: define{{.*}} void @test4(
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extern "C" void test4(void) {}
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}
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// PR9316: Ensure that even non-namespace-scope function declarations in
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// a C declaration context respect that over the anonymous namespace.
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extern "C" {
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namespace {
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struct X {
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int f() {
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extern int g();
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extern int a;
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// Test both for mangling in the code generation and warnings from use
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// of internal, undefined names via -Werror.
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// CHECK: call i32 @g(
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// CHECK: load i32, i32* @a,
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return g() + a;
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}
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};
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}
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// Force the above function to be emitted by codegen.
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int test(X& x) {
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return x.f();
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}
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}
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// CHECK: define linkonce_odr noundef i8* @_ZN5test11A3fooILj0EEEPvv(
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// CHECK: define linkonce_odr noundef i8* @_ZN5test21A1BILj0EE3fooEv(
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namespace test5 {
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struct foo {
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};
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extern "C" {
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const foo bar[] = {
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};
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}
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}
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// Test that we don't compute linkage too hastily before we're done
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// processing a record decl. rdar://15928125
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namespace test6 {
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typedef struct {
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int foo() {
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// Tested at top of file.
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static int bar = 0;
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return bar++;
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}
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} A;
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void test() {
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A a;
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a.foo();
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}
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}
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