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llvm-project/clang/test/CodeGenCXX/global-dtor-no-atexit.cpp

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C++: Add support for -fno-use-cxa-atexit. - So much typing, so little gain... Also, rename the __cxx_global_initialization function just to match llvm-gcc. llvm-svn: 99039
2010-03-20 12:15:41 +08:00
// RUN: %clang_cc1 -triple x86_64 %s -fno-use-cxa-atexit -emit-llvm -o - | FileCheck %s
Fix PR7097, a bad interaction between -fno-use-cxa-atexit and -mconstructor-aliases by using a WeakVH instead of a raw pointer. llvm-svn: 106384
2010-06-19 13:52:45 +08:00
// PR7097
// RUN: %clang_cc1 -triple x86_64 %s -fno-use-cxa-atexit -mconstructor-aliases -emit-llvm -o - | FileCheck %s
Revert "[CodeGenCXX] Treat 'this' as noalias in constructors" This reverts commit https://reviews.llvm.org/rL344150 which causes MachineOutliner related failures on the ppc64le multistage buildbot. llvm-svn: 344526
2018-10-15 23:43:00 +08:00
// CHECK: call void @_ZN1AC1Ev([[A:%.*]]* @a)
Use atexit when __cxa_atexit isn't available instead of adding a global destructor entry. For some reason this isn't enabled for apple-kexts; it'd be good to have documentation for that. Based on a patch by Nakamura Takumi! llvm-svn: 154191
2012-04-07 02:21:06 +08:00
// CHECK-NEXT: call i32 @atexit(void ()* @__dtor_a)
Add more of the command line options as attribute flags. These can be easily queried by the back-end. llvm-svn: 176304
2013-03-01 06:49:57 +08:00
// CHECK: define internal void @__dtor_a() [[NUW:#[0-9]+]]
Use atexit when __cxa_atexit isn't available instead of adding a global destructor entry. For some reason this isn't enabled for apple-kexts; it'd be good to have documentation for that. Based on a patch by Nakamura Takumi! llvm-svn: 154191
2012-04-07 02:21:06 +08:00
// CHECK: call void @_ZN1AD1Ev([[A]]* @a)
Revert "[CodeGenCXX] Treat 'this' as noalias in constructors" This reverts commit https://reviews.llvm.org/rL344150 which causes MachineOutliner related failures on the ppc64le multistage buildbot. llvm-svn: 344526
2018-10-15 23:43:00 +08:00
// CHECK: call void @_ZN1AC1Ev([[A]]* @b)
Use atexit when __cxa_atexit isn't available instead of adding a global destructor entry. For some reason this isn't enabled for apple-kexts; it'd be good to have documentation for that. Based on a patch by Nakamura Takumi! llvm-svn: 154191
2012-04-07 02:21:06 +08:00
// CHECK-NEXT: call i32 @atexit(void ()* @__dtor_b)
Add more of the command line options as attribute flags. These can be easily queried by the back-end. llvm-svn: 176304
2013-03-01 06:49:57 +08:00
// CHECK: define internal void @__dtor_b() [[NUW]]
Use atexit when __cxa_atexit isn't available instead of adding a global destructor entry. For some reason this isn't enabled for apple-kexts; it'd be good to have documentation for that. Based on a patch by Nakamura Takumi! llvm-svn: 154191
2012-04-07 02:21:06 +08:00
// CHECK: call void @_ZN1AD1Ev([[A]]* @b)
C++: Add support for -fno-use-cxa-atexit. - So much typing, so little gain... Also, rename the __cxx_global_initialization function just to match llvm-gcc. llvm-svn: 99039
2010-03-20 12:15:41 +08:00
class A {
public:
A();
~A();
};
A a, b;
Use atexit when __cxa_atexit isn't available instead of adding a global destructor entry. For some reason this isn't enabled for apple-kexts; it'd be good to have documentation for that. Based on a patch by Nakamura Takumi! llvm-svn: 154191
2012-04-07 02:21:06 +08:00
// PR9593
CHECK-LABEL-ify some code gen tests to improve diagnostic experience when tests fail. llvm-svn: 188447
2013-08-15 14:47:53 +08:00
// CHECK-LABEL: define void @_Z4funcv()
Use atexit when __cxa_atexit isn't available instead of adding a global destructor entry. For some reason this isn't enabled for apple-kexts; it'd be good to have documentation for that. Based on a patch by Nakamura Takumi! llvm-svn: 154191
2012-04-07 02:21:06 +08:00
// CHECK: call i32 @__cxa_guard_acquire(i64* @_ZGVZ4funcvE2a1)
Revert "[CodeGenCXX] Treat 'this' as noalias in constructors" This reverts commit https://reviews.llvm.org/rL344150 which causes MachineOutliner related failures on the ppc64le multistage buildbot. llvm-svn: 344526
2018-10-15 23:43:00 +08:00
// CHECK: call void @_ZN1AC1Ev([[A]]* @_ZZ4funcvE2a1)
Use atexit when __cxa_atexit isn't available instead of adding a global destructor entry. For some reason this isn't enabled for apple-kexts; it'd be good to have documentation for that. Based on a patch by Nakamura Takumi! llvm-svn: 154191
2012-04-07 02:21:06 +08:00
// CHECK-NEXT: call i32 @atexit(void ()* @__dtor__ZZ4funcvE2a1)
// CHECK-NEXT: call void @__cxa_guard_release(i64* @_ZGVZ4funcvE2a1)
// CHECK: call i32 @__cxa_guard_acquire(i64* @_ZGVZ4funcvE2a2)
Revert "[CodeGenCXX] Treat 'this' as noalias in constructors" This reverts commit https://reviews.llvm.org/rL344150 which causes MachineOutliner related failures on the ppc64le multistage buildbot. llvm-svn: 344526
2018-10-15 23:43:00 +08:00
// CHECK: call void @_ZN1AC1Ev([[A]]* @_ZZ4funcvE2a2)
Use atexit when __cxa_atexit isn't available instead of adding a global destructor entry. For some reason this isn't enabled for apple-kexts; it'd be good to have documentation for that. Based on a patch by Nakamura Takumi! llvm-svn: 154191
2012-04-07 02:21:06 +08:00
// CHECK-NEXT: call i32 @atexit(void ()* @__dtor__ZZ4funcvE2a2)
// CHECK-NEXT: call void @__cxa_guard_release(i64* @_ZGVZ4funcvE2a2)
Add more of the command line options as attribute flags. These can be easily queried by the back-end. llvm-svn: 176304
2013-03-01 06:49:57 +08:00
// CHECK: define internal void @__dtor__ZZ4funcvE2a1() [[NUW]]
Use atexit when __cxa_atexit isn't available instead of adding a global destructor entry. For some reason this isn't enabled for apple-kexts; it'd be good to have documentation for that. Based on a patch by Nakamura Takumi! llvm-svn: 154191
2012-04-07 02:21:06 +08:00
// CHECK: call void @_ZN1AD1Ev([[A]]* @_ZZ4funcvE2a1)
Add more of the command line options as attribute flags. These can be easily queried by the back-end. llvm-svn: 176304
2013-03-01 06:49:57 +08:00
// CHECK: define internal void @__dtor__ZZ4funcvE2a2() [[NUW]]
Use atexit when __cxa_atexit isn't available instead of adding a global destructor entry. For some reason this isn't enabled for apple-kexts; it'd be good to have documentation for that. Based on a patch by Nakamura Takumi! llvm-svn: 154191
2012-04-07 02:21:06 +08:00
// CHECK: call void @_ZN1AD1Ev([[A]]* @_ZZ4funcvE2a2)
void func() {
static A a1, a2;
}
Modify the tests to use attribute group references instead of listing the function attributes. llvm-svn: 175606
2013-02-20 15:22:19 +08:00
Cleanup the handling of noinline function attributes, -fno-inline, -fno-inline-functions, -O0, and optnone. These were really, really tangled together: - We used the noinline LLVM attribute for -fno-inline - But not for -fno-inline-functions (breaking LTO) - But we did use it for -finline-hint-functions (yay, LTO is happy!) - But we didn't for -O0 (LTO is sad yet again...) - We had weird structuring of CodeGenOpts with both an inlining enumeration and a boolean. They interacted in weird ways and needlessly. - A *lot* of set smashing went on with setting these, and then got worse when we considered optnone and other inlining-effecting attributes. - A bunch of inline affecting attributes were managed in a completely different place from -fno-inline. - Even with -fno-inline we failed to put the LLVM noinline attribute onto many generated function definitions because they didn't show up as AST-level functions. - If you passed -O0 but -finline-functions we would run the normal inliner pass in LLVM despite it being in the O0 pipeline, which really doesn't make much sense. - Lastly, we used things like '-fno-inline' to manipulate the pass pipeline which forced the pass pipeline to be much more parameterizable than it really needs to be. Instead we can *just* use the optimization level to select a pipeline and control the rest via attributes. Sadly, this causes a bunch of churn in tests because we don't run the optimizer in the tests and check the contents of attribute sets. It would be awesome if attribute sets were a bit more FileCheck friendly, but oh well. I think this is a significant improvement and should remove the semantic need to change what inliner pass we run in order to comply with the requested inlining semantics by relying completely on attributes. It also cleans up tho optnone and related handling a bit. One unfortunate aspect of this is that for generating alwaysinline routines like those in OpenMP we end up removing noinline and then adding alwaysinline. I tried a bunch of other approaches, but because we recompute function attributes from scratch and don't have a declaration here I couldn't find anything substantially cleaner than this. Differential Revision: https://reviews.llvm.org/D28053 llvm-svn: 290398
2016-12-23 09:24:49 +08:00
// CHECK: attributes [[NUW]] = { noinline nounwind{{.*}} }