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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/106502] New: Three calls to __attribute__((const)) function Date: Mon, 01 Aug 2022 23:04:58 +0000 [thread overview] Message-ID: <bug-106502-4@http.gcc.gnu.org/bugzilla/> (raw) https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106502 Bug ID: 106502 Summary: Three calls to __attribute__((const)) function Product: gcc Version: 13.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: redi at gcc dot gnu.org Target Milestone: --- #include <system_error> int main() { __builtin_puts(std::system_category().name()); } With gcc 12 the resulting assembly is: .file "cat.C" .text .globl main .type main, @function main: .LFB1309: .cfi_startproc pushq %rbp .cfi_def_cfa_offset 16 .cfi_offset 6, -16 movq %rsp, %rbp .cfi_def_cfa_register 6 pushq %rbx subq $8, %rsp .cfi_offset 3, -24 call _ZNSt3_V215system_categoryEv call _ZNSt3_V215system_categoryEv movq (%rax), %rax addq $16, %rax movq (%rax), %rbx call _ZNSt3_V215system_categoryEv movq %rax, %rdi call *%rbx movq %rax, %rdi call puts movl $0, %eax movq -8(%rbp), %rbx leave .cfi_def_cfa 7, 8 ret .cfi_endproc .LFE1309: .size main, .-main .ident "GCC: (GNU) 12.1.1 20220507 (Red Hat 12.1.1-1)" .section .note.GNU-stack,"",@progbits Why is the std::system_category() function called three times?
next reply other threads:[~2022-08-01 23:04 UTC|newest] Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-08-01 23:04 redi at gcc dot gnu.org [this message] 2022-08-01 23:10 ` [Bug c++/106502] " pinskia at gcc dot gnu.org 2022-08-01 23:11 ` pinskia at gcc dot gnu.org 2022-08-02 6:41 ` redi at gcc dot gnu.org 2022-08-02 10:04 ` rguenth at gcc dot gnu.org 2022-08-02 10:13 ` redi at gcc dot gnu.org 2022-08-04 2:31 ` egallager at gcc dot gnu.org 2022-08-04 6:27 ` redi at gcc dot gnu.org
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