https://llvm.org/bugs/show_bug.cgi?id=17955
Eric Christopher <echri...@gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #1 from Eric Christopher <echri...@gmail.com> ---
We produce similar code (though not the same) to gcc here now:
dzur:~/tmp> cat > foo.c
struct foo {
int f_x : 1;
int f_y : 1;
};
int fun(struct foo *f) {
return f->f_x || f->f_y;
}
dzur:~/tmp> ~/builds/build-llvm/Debug+Asserts/bin/clang -O2 -S -o - foo.c
.text
.file "foo.c"
.globl fun
.align 16, 0x90
.type fun,@function
fun: # @fun
.cfi_startproc
# BB#0: # %entry
testb $3, (%rdi)
setne %al
movzbl %al, %eax
retq
.Lfunc_end0:
.size fun, .Lfunc_end0-fun
.cfi_endproc
.ident "clang version 3.8.0 (trunk 250477) (llvm/trunk 250464)"
.section ".note.GNU-stack","",@progbits
dzur:~/tmp> gcc -O2 -S -o - foo.c
.file "foo.c"
.text
.p2align 4,,15
.globl fun
.type fun, @function
fun:
.LFB0:
.cfi_startproc
xorl %eax, %eax
testb $3, (%rdi)
setne %al
ret
.cfi_endproc
.LFE0:
.size fun, .-fun
.ident "GCC: (Ubuntu 4.8.4-2ubuntu1~14.04) 4.8.4"
.section .note.GNU-stack,"",@progbits
Happy David?
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