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Re: [c/c++] i686 codegen bugs in tinfo2.cc
- To: Benjamin Kosnik <bkoz at redhat dot com>
- Subject: Re: [c/c++] i686 codegen bugs in tinfo2.cc
- From: Richard Henderson <rth at redhat dot com>
- Date: Thu, 11 Jan 2001 01:34:37 -0800
- Cc: gcc-bugs at gcc dot gnu dot org, rth at cygnus dot com, scox at redhat dot com
- References: <200101110257.f0B2vu525628@fillmore.constant.com>
On Wed, Jan 10, 2001 at 06:57:56PM -0800, Benjamin Kosnik wrote:
> Comparing the assembly of this file (tinfo2.cc in libsupc++,
> part of libstdc++-v3) tinfo2.cc:226
[...]
@@ -1,10 +1,9 @@
push %ebp
mov %esp,%ebp
- push %ecx
- push %ecx
+ sub $0x8,%esp
+ mov 0x10(%ebp),%eax
mov 0x8(%ebp),%ecx
mov 0x14(%ebp),%edx
- mov 0x10(%ebp),%eax
mov %eax,(%edx)
mov (%ecx),%eax
push $0x1
@@ -13,7 +12,7 @@
push %edx
push %ecx
call *0x10(%eax)
- and $0xff,%eax
mov %ebp,%esp
pop %ebp
+ movzbl %al,%eax
ret
I don't see anything that looks wrong...
r~