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13 Commits

Author SHA1 Message Date
Matt Arsenault
143ca74ed3 AtomicExpand: Convert tests to opaque pointers 2022-11-28 08:43:16 -05:00
Manuel Brito
f408635b26 [CodeGen] Use poison instead of undef as placeholder in AtomicExpandPass [NFC] 
Differential Revision: https://reviews.llvm.org/D138483
 2022-11-24 08:42:28 +00:00
Matt Arsenault
b60a9ccd02 AtomicExpand: Use InstSimplifyFolder 
Automatically cleanup operations if we know the atomic has higher
alignment.
 2022-10-31 23:31:42 -07:00
Kai Luo
ad2f7fd286 [AtomicExpand] Make floating point conversion happens before fence insertion 
IIUC, the conversion part is not part of atomic operations and fences should be put around converted atomic operations.
This also fixes atomic load of floating point values which requires fence on PowerPC.

Reviewed By: efriedma

Differential Revision: https://reviews.llvm.org/D127609
 2022-08-31 09:54:58 +08:00
Kai Luo
6710b21d46 [PowerPC] Allow llvm.ppc.cfence to accept pointer types 
In the context of atomic load, integer, pointer and float point types are allowed, thus we should allow llvm.ppc.cfence to accept any type mentioned.

Fixes https://github.com/llvm/llvm-project/issues/55983.

Reviewed By: shchenz, vchuravy

Differential Revision: https://reviews.llvm.org/D127554
 2022-06-24 10:55:32 +08:00
Kai Luo
8091f7120c [PowerPC] Correct test RUN line. NFC. 2022-06-14 14:56:00 +08:00
Kai Luo
029fc37270 [PowerPC][AtomicExpand] Precommit IR tests for D127609. NFC. 2022-06-14 14:24:21 +08:00
Kai Luo
18679ac0d7 [PowerPC] Adjust MaxAtomicSizeInBitsSupported on PPC64 
AtomicExpandPass uses this variable to determine emitting libcalls or not. The default value is 1024 and if we don't specify it for PPC64 explicitly, AtomicExpandPass won't emit `__atomic_*` libcalls for those target unable to inline atomic ops and finally the backend emits `__sync_*` libcalls. Thanks @efriedma for pointing it out.

Reviewed By: efriedma

Differential Revision: https://reviews.llvm.org/D122868
 2022-04-09 00:03:09 +00:00
Kai Luo
dc77769fc6 [PowerPC] Add cmpxchg test for pwr7 in atomic expand pass. NFC. 2022-04-01 13:27:54 +08:00
Kai Luo
31906a6090 [AtomicExpand][PowerPC] Fix all-one mask value 
When generating a all-one mask value whose bitwidth is larger than 64, signed extension should be used rather then zero extension.

Reviewed By: jsji

Differential Revision: https://reviews.llvm.org/D120865
 2022-03-18 13:35:54 +08:00
Kai Luo
1cfcbf197c [PowerPC][atomics] Precommit test cases for i128 cmpxchg. NFC. 2022-03-03 10:47:52 +08:00
Kai Luo
1453f048cf [PowerPC] Add lit.local.cfg in AtomicExpand tests 
Fixed build errors on other platforms.
 2021-07-20 09:13:50 +00:00
Kai Luo
e2ee27b20b [PowerPC] Fallback to base's implementation of shouldExpandAtomicCmpXchgInIR and shouldExpandAtomicCmpXchgInIR 
If we can't decide `shouldExpandAtomicCmpXchgInIR` or `shouldExpandAtomicCmpXchgInIR` in PPC's implementation after https://reviews.llvm.org/rGb9c3941cd61de1e1b9e4f3311ddfa92394475f4b, resort to base's implementation.

This fixes internal build of OpenMP which uses atomic operations on float.

Reviewed By: jsji

Differential Revision: https://reviews.llvm.org/D106234
 2021-07-20 06:14:24 +00:00