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| author | Georg-Johann Lay <avr@gjlay.de> | 2024-11-16 14:26:02 +0100 |
|---|---|---|
| committer | Georg-Johann Lay <avr@gjlay.de> | 2024-11-16 19:56:13 +0100 |
| commit | 083892ba18452383a1f240072d2a96dd72321a4f (patch) | |
| tree | 134ab4c7a6bf2c9aeaa6ba294eed52c254ae2a1e /libphobos/README.gcc | |
| parent | 02d7370966ac19af966b827b4c984e8a38fdf728 (diff) | |
| download | gcc-083892ba18452383a1f240072d2a96dd72321a4f.zip gcc-083892ba18452383a1f240072d2a96dd72321a4f.tar.gz gcc-083892ba18452383a1f240072d2a96dd72321a4f.tar.bz2 | |
AVR: target/116781 - Fix ICE due to (clobber (match_dup)) in tablejump.
This patch avoids (clobber (match_dup)) in insn patterns for tablejump.
The machine description now uses a scratch_operand instead which is
possible since the clobbered entity is known in advance:
3-byte PC : REG_Z
2-byte PC + JMP : REG_Z
2-byte PC + RJMP : None, hence scratch:HI is used.
The avr-casesi pass and optimization has to be adjusted to the new patterns.
PR target/116781
gcc/
* config/avr/avr.md (*tablejump_split, *tablejump): Add
operand 2 as a "scratch_operand" instead of a match_dup.
(casesi): Adjust expander operands accordingly. Use a scratch:HI
when the jump address is not clobbered. This is the case for a
2-byte PC + has no JMP instruction. In all the other cases, the
affected operand is REG_Z (reg:HI 30).
(casesi_<mode>_sequence): Adjust matcher to new anatomy.
* config/avr/avr-passes.cc (avr_is_casesi_sequence)
(avr_is_casesi_sequence, avr_optimize_casesi)
(avr_casei_sequence_check_operands): Adjust to new anatomy.
Diffstat (limited to 'libphobos/README.gcc')
0 files changed, 0 insertions, 0 deletions