Re: [PATCH] ira: Don't create copies for earlyclobbered pairs

2023-05-08 Thread Vladimir Makarov via Gcc-patches
On 5/5/23 12:59, Richard Sandiford wrote: This patch follows on from g:9f635bd13fe9e85872e441b6f3618947f989909a ("the previous patch"). To start by quoting that: If an insn requires two operands to be tied, and the input operand dies in the insn, IRA acts as though there were a copy from the

[PATCH] ira: Don't create copies for earlyclobbered pairs

2023-05-05 Thread Richard Sandiford via Gcc-patches
This patch follows on from g:9f635bd13fe9e85872e441b6f3618947f989909a ("the previous patch"). To start by quoting that: If an insn requires two operands to be tied, and the input operand dies in the insn, IRA acts as though there were a copy from the input to the output with the same execution