Re: [PATCH] aarch64: Don't record hazards against paired insns [PR113356]

2024-01-22 Thread Richard Sandiford
Alex Coplan writes: > Hi, > > For the testcase in the PR, we try to pair insns where the first has > writeback and the second uses the updated base register. This causes us > to record a hazard against the second insn, thus narrowing the move > range away from the end of the BB. > > However, it

[PATCH] aarch64: Don't record hazards against paired insns [PR113356]

2024-01-15 Thread Alex Coplan
Hi, For the testcase in the PR, we try to pair insns where the first has writeback and the second uses the updated base register. This causes us to record a hazard against the second insn, thus narrowing the move range away from the end of the BB. However, it isn't meaningful to record hazards