On Fri, 28 Jun 2024, YunQiang Su wrote:
> > > > Overall ISTM there is no need for distinct insns for ISA_HAS_COND_TRAPI
> > > > and !ISA_HAS_COND_TRAPI cases each and this would better be sorted with
> > > > predicates and constraints, especially as the output pattern is the same
> > > > in both
Maciej W. Rozycki 于2024年6月28日周五 01:01写道：
>
> On Thu, 27 Jun 2024, YunQiang Su wrote:
>
> > > The missed optimisation in GAS, which used not to trigger pre-R6, is
> > > irrelevant from this change's point of view and just adds noise. I'm
> > > surprised that it worked even in the first place, as
On Thu, 27 Jun 2024, YunQiang Su wrote:
> > The missed optimisation in GAS, which used not to trigger pre-R6, is
> > irrelevant from this change's point of view and just adds noise. I'm
> > surprised that it worked even in the first place, as I reckon GCC is
> > supposed to emit regular MIPS cod
Maciej W. Rozycki 于2024年6月27日周四 00:07写道：
>
> On Thu, 20 Jun 2024, YunQiang Su wrote:
>
> > MIPSr6 removes condition trap instructions with imm, so the instruction
> > like `teq $2,imm` will be converted to
> > li $at, imm
> > teq $2, $at
> >
> > The current version of Gas cannot detect if imm
On Thu, 20 Jun 2024, YunQiang Su wrote:
> MIPSr6 removes condition trap instructions with imm, so the instruction
> like `teq $2,imm` will be converted to
> li $at, imm
> teq $2, $at
>
> The current version of Gas cannot detect if imm is zero, and output
> teq $2, $0
> Let's do it in GCC.
MIPSr6 removes condition trap instructions with imm, so the instruction
like `teq $2,imm` will be converted to
li $at, imm
teq $2, $at
The current version of Gas cannot detect if imm is zero, and output
teq $2, $0
Let's do it in GCC.
gcc
* config/mips/mips.md(conditional_trap_reg):
