tcg: Canonicalize SUBI to ANDI

[PATCH 0/4] tcg: Canonicalize SUBI to ANDI

Richard Henderson posted 4 patches 1 year, 1 month ago

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Patches applied successfully (tree, apply log)
git fetch https://github.com/patchew-project/qemu tags/patchew/20231026013945.1152174-1-richard.henderson@linaro.org

Maintainers: Richard Henderson <richard.henderson@linaro.org>

tcg/optimize.c            | 35 +++++++++++++++++++++++++---
tcg/tcg-op.c              | 25 +++++++-------------
tcg/tcg.c                 | 49 ++++++++++++++++++++++++++-------------
tcg/i386/tcg-target.c.inc | 13 ++++++++---
4 files changed, 84 insertions(+), 38 deletions(-)

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[PATCH 0/4] tcg: Canonicalize SUBI to ANDI

Posted by Richard Henderson 1 year, 1 month ago

Supercedes: 20231025185956.72677-1-pbonzini@redhat.com
("tcg: allow a target to request canonicalization of SUBI to ADDI")

Based-on: 20231025072707.833943-1-richard.henderson@linaro.org
("tcg: Introduce TCG_COND_TST{EQ,NE}")
There a couple of optimize.c routines introduced which I use here.

The final NOTFORMERGE patch suggests that I've caught all of the
cases, but I certainly wouldn't want to merge the assert without
a lot more testing.


r~


Richard Henderson (4):
  tcg: Canonicalize subi to addi during opcode generation
  tcg/optimize: Canonicalize subi to addi during optimization
  tcg/optimize: Canonicalize sub2 with constants to add2
  NOTFORMERGE tcg/i386: Assert sub of immediate has been folded

 tcg/optimize.c            | 35 +++++++++++++++++++++++++---
 tcg/tcg-op.c              | 25 +++++++-------------
 tcg/tcg.c                 | 49 ++++++++++++++++++++++++++-------------
 tcg/i386/tcg-target.c.inc | 13 ++++++++---
 4 files changed, 84 insertions(+), 38 deletions(-)

-- 
2.34.1

Re: [PATCH 0/4] tcg: Canonicalize SUBI to ANDI

Posted by Richard Henderson 1 year ago

Ping.

On 10/25/23 18:39, Richard Henderson wrote:
> Supercedes: 20231025185956.72677-1-pbonzini@redhat.com
> ("tcg: allow a target to request canonicalization of SUBI to ADDI")
> 
> Based-on: 20231025072707.833943-1-richard.henderson@linaro.org
> ("tcg: Introduce TCG_COND_TST{EQ,NE}")
> There a couple of optimize.c routines introduced which I use here.
> 
> The final NOTFORMERGE patch suggests that I've caught all of the
> cases, but I certainly wouldn't want to merge the assert without
> a lot more testing.
> 
> 
> r~
> 
> 
> Richard Henderson (4):
>    tcg: Canonicalize subi to addi during opcode generation
>    tcg/optimize: Canonicalize subi to addi during optimization
>    tcg/optimize: Canonicalize sub2 with constants to add2
>    NOTFORMERGE tcg/i386: Assert sub of immediate has been folded
> 
>   tcg/optimize.c            | 35 +++++++++++++++++++++++++---
>   tcg/tcg-op.c              | 25 +++++++-------------
>   tcg/tcg.c                 | 49 ++++++++++++++++++++++++++-------------
>   tcg/i386/tcg-target.c.inc | 13 ++++++++---
>   4 files changed, 84 insertions(+), 38 deletions(-)
>