https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77689
Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |trippels at gcc dot gnu.org
--- Comment #2 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Clang is pretty impressive using libc++ and -Ofast:
markus@x4 /tmp % clang++ -stdlib=libc++ -Ofast vec.cpp -S -o -
.text
.file "vec.cpp"
.globl main
.p2align 4, 0x90
.type main,@function
main: # @main
.cfi_startproc
# BB#0: # %cond.true.i.i
xorl %eax, %eax
.p2align 4, 0x90
.LBB0_1: # %for.body
# =>This Inner Loop Header: Depth=1
movq %rax, %rcx
testq %rcx, %rcx
movl $1, %eax
je .LBB0_1
# BB#2: # %for.inc
# in Loop: Header=BB0_1 Depth=1
incq %rcx
cmpq $100000000, %rcx # imm = 0x5F5E100
movq %rcx, %rax
jne .LBB0_1
# BB#3: #
%_ZNSt3__113__vector_baseIfNS_9allocatorIfEEE5clearEv.exit.i111
xorl %eax, %eax
retq
.Lfunc_end0:
.size main, .Lfunc_end0-main
.cfi_endproc
.ident "clang version 4.0.0 (http://llvm.org/git/clang.git
bd81660d3610ae5b3c300dea369fbe0b35c89a49) (http://llvm.org/git/llvm.git
4836a1b36199ba43688ce142e898e29f2bb5cce7)"
.section ".note.GNU-stack","",@progbits
