[patch,avr,4.9] Fix PR63633 ICEs for expanders colliding hard-regs
Georg-Johann Lay
avr@gjlay.de
Tue Oct 28 12:55:00 GMT 2014
Am 10/28/2014 01:34 PM, schrieb Georg-Johann Lay:
> Middle-end might come up with hard registers as operands for expanders which
> clobber respective hard regs. This patch uses freshly created pseudos for
> respective expander operands and emits pseudo <-> hard move insn.
>
> Ok for 4.9.2?
p.s.: testsuite passes without new regressions
> It's not yet for trunk because avr trunk backend is currently broken.
>
> Johann
>
> gcc/
> PR63633
> * config/avr/avr-protos.h (regmask): New inline function.
> (avr_fix_inputs, avr_emit3_fix_outputs): New protos.
> * config/avr/avr.c (avr_fix_operands, avr_move_fixed_operands)
> (avr_fix_inputs, avr_emit3_fix_outputs): New functions.
> * config/avr/avr-fixed.md (mulqq3_nomul, muluqq3_nomul)
> (mul<ALL2QA>3, mul<ALL4A>3, <usdiv><ALL1Q>3, <usdiv><ALL2QA>3)
> (<usdiv><ALL4A>3, round<ALL124QA>3): Fix input operands.
> * config/avr/avr-dimode.md (add<ALL8>3, sub<ALL8>3)
> (<ss_addsub><ALL8S>3, <us_addsub><ALL8U>3, cbranch<ALL8>4)
> (<di_shifts><ALL8>3, <any_extend>mulsidi3): Fix input operands.
> * config/avr/avr.md (mulqi3_call, mulhi3_call, mulsi3, mulpsi3)
> (mulu<QIHI>si3, muls<QIHI>si3, mulohisi3, <any_extend>mulhisi3)
> (usmulhisi3, <any_extend>mulhi3_highpart, mulsqipsi3)
> (fmul, fmuls, fmulsu): Fix operands. Turn insn into expander as
> needed.
>
> gcc/testsuite/
> PR63633
> * gcc.target/avr/torture/pr63633-ice-mult.c: New test.
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