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From: "hubicka at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/115037] New: Unused std::vector is not optimized away. Date: Fri, 10 May 2024 15:16:37 +0000 [thread overview] Message-ID: <bug-115037-4@http.gcc.gnu.org/bugzilla/> (raw) https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115037 Bug ID: 115037 Summary: Unused std::vector is not optimized away. Product: gcc Version: 14.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: middle-end Assignee: unassigned at gcc dot gnu.org Reporter: hubicka at gcc dot gnu.org Target Milestone: --- Compiling #include <vector> void test() { std::vector<int> test; test.push_back (1); } leads to _Z4testv: .LFB1253: .cfi_startproc subq $8, %rsp .cfi_def_cfa_offset 16 movl $4, %edi call _Znwm movl $4, %esi movl $1, (%rax) movq %rax, %rdi addq $8, %rsp .cfi_def_cfa_offset 8 jmp _ZdlPvm while clang optimizes to: _Z4testv: # @_Z4testv .cfi_startproc # %bb.0: retq
next reply other threads:[~2024-05-10 15:16 UTC|newest] Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top 2024-05-10 15:16 hubicka at gcc dot gnu.org [this message] 2024-05-10 15:42 ` [Bug middle-end/115037] " pinskia at gcc dot gnu.org 2024-05-10 16:12 ` hubicka at gcc dot gnu.org 2024-05-10 16:22 ` pinskia at gcc dot gnu.org 2024-05-10 16:24 ` pinskia at gcc dot gnu.org 2024-05-10 17:19 ` xry111 at gcc dot gnu.org 2024-05-10 18:40 ` redi at gcc dot gnu.org 2024-05-11 0:07 ` xry111 at gcc dot gnu.org
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