Re: [PATCH] combine: Don't simplify high part of paradoxical-SUBREG-of-MEM on machines that sign-extend loads [PR113010]

2024-02-23 Thread Greg McGary
On 2/22/24 2:08 PM, Jakub Jelinek wrote: On Thu, Feb 22, 2024 at 12:59:18PM -0800, Greg McGary wrote: The sign bit of a sign-extending load cannot be known until runtime, so don't attempt to simplify it in the combiner. 2024-02-22 Greg McGary PR rtl-optimization/113010 *

Re: [PATCH] combine: Don't simplify high part of paradoxical-SUBREG-of-MEM on machines that sign-extend loads [PR113010]

2024-02-22 Thread Jakub Jelinek
On Thu, Feb 22, 2024 at 12:59:18PM -0800, Greg McGary wrote: > The sign bit of a sign-extending load cannot be known until runtime, > so don't attempt to simplify it in the combiner. > > 2024-02-22 Greg McGary > > PR rtl-optimization/113010 > * combine.cc (simplify_comparison):

[PATCH] combine: Don't simplify high part of paradoxical-SUBREG-of-MEM on machines that sign-extend loads [PR113010]

2024-02-22 Thread Greg McGary
The sign bit of a sign-extending load cannot be known until runtime, so don't attempt to simplify it in the combiner. 2024-02-22 Greg McGary PR rtl-optimization/113010 * combine.cc (simplify_comparison): Don't simplify high part of paradoxical-SUBREG-of-MEM on machines