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| author | Thomas Preud'homme <thomas.preudhomme@arm.com> | 2016-10-26 16:17:54 +0000 |
|---|---|---|
| committer | Thomas Preud'homme <thopre01@gcc.gnu.org> | 2016-10-26 16:17:54 +0000 |
| commit | 3a5a75b53a278188c21a2a2dc53ebf309a2b1a09 (patch) | |
| tree | e2400171a48808237a6f4ea911f76f522370f9ef /gcc/print-rtl-function.c | |
| parent | 12286f25cddbf8e8b3a810442ffa4959da315c31 (diff) | |
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Adapt atomic compare and swap to ARMv8-M Baseline
2016-10-26 Thomas Preud'homme <thomas.preudhomme@arm.com>
gcc/
* config/arm/sync.md (atomic_compare_and_swap<mode>_1): Add new ARMv8-M
Baseline only alternatives to (i) hold store atomic success value in a
return register rather than a scratch register, (ii) use a low register
for it and to (iii) ensure the cbranchsi insn generated by the split
respect the constraints of Thumb-1 cbranchsi4_insn and
cbranchsi4_scratch.
* config/arm/thumb1.md (cbranchsi4_insn): Add comment to indicate
constraints must match those in atomic_compare_and_swap.
(cbranchsi4_scratch): Likewise.
From-SVN: r241578
Diffstat (limited to 'gcc/print-rtl-function.c')
0 files changed, 0 insertions, 0 deletions