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

[Richard Henderson]

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