Hi,
This set of patches (for gcc-15) help improve stack/array accesses
by improving constant materialization. Details are in respective
patches.
The first patch is the main change which improves SPEC cactu by 10%.
There is at least one more pending change with same theme
(riscv_add_offset/riscv_legitimize_address) but that is tripping up
and currently being debugged.
Thx,
-Vineet
Vineet Gupta (3):
RISC-V: avoid LUI based const materialization ... [part of PR/106265]
RISC-V: avoid LUI based const mat: keep stack offsets aligned
RISC-V: avoid LUI based const mat in prologue/epilogue expansion
[PR/105733]
gcc/config/riscv/constraints.md | 12 +++
gcc/config/riscv/predicates.md | 12 +++
gcc/config/riscv/riscv-protos.h | 3 +
gcc/config/riscv/riscv.cc | 91 +++++++++++++++++--
gcc/config/riscv/riscv.h | 20 ++++
gcc/config/riscv/riscv.md | 65 +++++++++++++
gcc/testsuite/gcc.target/riscv/pr105733.c | 15 +++
.../riscv/rvv/autovec/vls/spill-1.c | 4 +-
.../riscv/rvv/autovec/vls/spill-2.c | 4 +-
.../riscv/rvv/autovec/vls/spill-3.c | 4 +-
.../riscv/rvv/autovec/vls/spill-4.c | 4 +-
.../riscv/rvv/autovec/vls/spill-5.c | 4 +-
.../riscv/rvv/autovec/vls/spill-6.c | 4 +-
.../riscv/rvv/autovec/vls/spill-7.c | 4 +-
.../gcc.target/riscv/sum-of-two-s12-const-1.c | 45 +++++++++
.../gcc.target/riscv/sum-of-two-s12-const-2.c | 22 +++++
16 files changed, 292 insertions(+), 21 deletions(-)
create mode 100644 gcc/testsuite/gcc.target/riscv/pr105733.c
create mode 100644 gcc/testsuite/gcc.target/riscv/sum-of-two-s12-const-1.c
create mode 100644 gcc/testsuite/gcc.target/riscv/sum-of-two-s12-const-2.c
--
2.34.1
