http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55499
Bug #: 55499
Summary: [devirt] trunk fails to eliminate dead functions where
all call sites were inlined
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: m...@use.net
When compiling inline-devirt-1.C, all inlining happens correctly but the
function bodies remain, with or without whole-program, with or without renaming
main to main2 (and compiling as a shared lib):
g++-4.8 -fwhole-program -O3 -funroll-loops inline-devirt-1.C
0000000000400810 <_ZN10CalculableD1Ev>:
400810: 48 c7 07 d0 09 40 00 mov QWORD PTR [rdi],0x4009d0
400817: c3 ret
400818: 0f 1f 84 00 00 00 00 nop DWORD PTR [rax+rax*1+0x0]
40081f: 00
0000000000400820 <_ZN1X9calculateEv>:
400820: b8 01 00 00 00 mov eax,0x1
400825: c3 ret
400826: 66 2e 0f 1f 84 00 00 nop WORD PTR cs:[rax+rax*1+0x0]
40082d: 00 00 00
0000000000400830 <_ZN1Y9calculateEv>:
400830: b8 02 00 00 00 mov eax,0x2
400835: c3 ret
400836: 66 2e 0f 1f 84 00 00 nop WORD PTR cs:[rax+rax*1+0x0]
40083d: 00 00 00
0000000000400840 <_ZN1YD1Ev>:
400840: 48 c7 07 d0 09 40 00 mov QWORD PTR [rdi],0x4009d0
400847: c3 ret
400848: 0f 1f 84 00 00 00 00 nop DWORD PTR [rax+rax*1+0x0]
40084f: 00
0000000000400850 <_ZN1XD1Ev>:
400850: 48 c7 07 d0 09 40 00 mov QWORD PTR [rdi],0x4009d0
400857: c3 ret
400858: 0f 1f 84 00 00 00 00 nop DWORD PTR [rax+rax*1+0x0]
40085f: 00
0000000000400860 <_ZN10CalculableD0Ev>:
400860: 48 c7 07 d0 09 40 00 mov QWORD PTR [rdi],0x4009d0
400867: e9 94 fd ff ff jmp 400600 <_ZdlPv@plt>
40086c: 0f 1f 40 00 nop DWORD PTR [rax+0x0]
0000000000400870 <_ZN1YD0Ev>:
400870: 48 c7 07 d0 09 40 00 mov QWORD PTR [rdi],0x4009d0
400877: e9 84 fd ff ff jmp 400600 <_ZdlPv@plt>
40087c: 0f 1f 40 00 nop DWORD PTR [rax+0x0]
0000000000400880 <_ZN1XD0Ev>:
400880: 48 c7 07 d0 09 40 00 mov QWORD PTR [rdi],0x4009d0
400887: e9 74 fd ff ff jmp 400600 <_ZdlPv@plt>
40088c: 0f 1f 40 00 nop DWORD PTR [rax+0x0]
