[PATCH] D61052: [compiler-rt][builtins] Implement some fetch-and-x operations for Cortex-M

[Ayke via Phabricator via llvm-commits]

aykevl updated this revision to Diff 197554.
aykevl added a comment.

- use the ldrex/strex implementation on Cortex-M3 and up for SYNC_OP_4
- fixed a bug in SYNC_OP_4 for the sub instruction (a bug remains in SYNC_OP_8, will fix soon)


Repository:
  rCRT Compiler Runtime

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D61052/new/

https://reviews.llvm.org/D61052

Files:
  lib/builtins/arm/sync-ops.h
  lib/builtins/arm/sync_fetch_and_add_4.S
  lib/builtins/arm/sync_fetch_and_add_8.S
  lib/builtins/arm/sync_fetch_and_and_4.S
  lib/builtins/arm/sync_fetch_and_and_8.S
  lib/builtins/arm/sync_fetch_and_nand_4.S
  lib/builtins/arm/sync_fetch_and_nand_8.S
  lib/builtins/arm/sync_fetch_and_or_4.S
  lib/builtins/arm/sync_fetch_and_or_8.S
  lib/builtins/arm/sync_fetch_and_sub_4.S
  lib/builtins/arm/sync_fetch_and_sub_8.S
  lib/builtins/arm/sync_fetch_and_xor_4.S
  lib/builtins/arm/sync_fetch_and_xor_8.S

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