This finishes the part 1 of 2 patch submitted by Andrew Burgess on Aug 19.
This adds the argument registers but not t0 (aka x5) to SIBCALL_REGS. It
also adds the missing riscv_regno_to_class change.
Tested with cross riscv32-elf and riscv64-linux toolchain build and check.
There were no regressions. I see about a 0.01% code size reduction for the
C and libstdc++ libraries.
Committed.
Jim
gcc/
* config/riscv/riscv.h (REG_CLASS_CONTENTS): Add argument passing
regs to SIBCALL_REGS.
* config/riscv/riscv.c (riscv_regno_to_class): Change argument
passing regs to SIBCALL_REGS.
---
gcc/config/riscv/riscv.c | 6 +++---
gcc/config/riscv/riscv.h | 2 +-
2 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/gcc/config/riscv/riscv.c b/gcc/config/riscv/riscv.c
index b8a8778b92c..77a3ad94aa8 100644
--- a/gcc/config/riscv/riscv.c
+++ b/gcc/config/riscv/riscv.c
@@ -256,9 +256,9 @@ enum riscv_microarchitecture_type riscv_microarchitecture;
const enum reg_class riscv_regno_to_class[FIRST_PSEUDO_REGISTER] = {
GR_REGS, GR_REGS, GR_REGS, GR_REGS,
GR_REGS, GR_REGS, SIBCALL_REGS, SIBCALL_REGS,
- JALR_REGS, JALR_REGS, JALR_REGS, JALR_REGS,
- JALR_REGS, JALR_REGS, JALR_REGS, JALR_REGS,
- JALR_REGS, JALR_REGS, JALR_REGS, JALR_REGS,
+ JALR_REGS, JALR_REGS, SIBCALL_REGS, SIBCALL_REGS,
+ SIBCALL_REGS, SIBCALL_REGS, SIBCALL_REGS, SIBCALL_REGS,
+ SIBCALL_REGS, SIBCALL_REGS, JALR_REGS, JALR_REGS,
JALR_REGS, JALR_REGS, JALR_REGS, JALR_REGS,
JALR_REGS, JALR_REGS, JALR_REGS, JALR_REGS,
SIBCALL_REGS, SIBCALL_REGS, SIBCALL_REGS, SIBCALL_REGS,
diff --git a/gcc/config/riscv/riscv.h b/gcc/config/riscv/riscv.h
index 5fc9be8edbf..246494663f6 100644
--- a/gcc/config/riscv/riscv.h
+++ b/gcc/config/riscv/riscv.h
@@ -400,7 +400,7 @@ enum reg_class
#define REG_CLASS_CONTENTS \
{ \
{ 0x00000000, 0x00000000, 0x00000000 }, /* NO_REGS */ \
- { 0xf00000c0, 0x00000000, 0x00000000 }, /* SIBCALL_REGS */ \
+ { 0xf003fcc0, 0x00000000, 0x00000000 }, /* SIBCALL_REGS */ \
{ 0xffffffc0, 0x00000000, 0x00000000 }, /* JALR_REGS */ \
{ 0xffffffff, 0x00000000, 0x00000000 }, /* GR_REGS */ \
{ 0x00000000, 0xffffffff, 0x00000000 }, /* FP_REGS */ \
--
2.17.1
