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Re: Using and clobbering hard regs in parallel
- To: Stephen Clarke <Stephen dot Clarke at st dot com>
- Subject: Re: Using and clobbering hard regs in parallel
- From: Richard Henderson <rth at redhat dot com>
- Date: Fri, 20 Jul 2001 15:27:37 -0700
- Cc: gcc at gcc dot gnu dot org, geoffk at geoffk dot org
- References: <jmvgkocqjq.fsf@geoffk.org> <3B5799C5.29E80E47@st.com>
On Thu, Jul 19, 2001 at 07:39:01PM -0700, Stephen Clarke wrote:
> 2. combine.c should preserve the REG_DEAD (reg:SI 4 r4) note on insn 20.
> Rationale: ummm, not sure -- maybe because if flow.c thinks
> the REG_DEAD note should be there, then combine.c should think so too.
This one is correct.
r~