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Diffstat (limited to 'src/amd/compiler/README')
| -rw-r--r-- | src/amd/compiler/README | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/amd/compiler/README b/src/amd/compiler/README index 620b4bcf63c..822ecd79cbc 100644 --- a/src/amd/compiler/README +++ b/src/amd/compiler/README @@ -200,3 +200,12 @@ Mitigated by: A VALU instruction that writes an SGPR (or has a valid SDST operand), or `s_waitcnt_depctr 0xfffe`. Note: `s_waitcnt_depctr` is an internal instruction, so there is no further information about what it does or what its operand means. + +### LdsBranchVmemWARHazard + +Triggered by: +VMEM/GLOBAL/SCRATCH instruction, then a branch, then a DS instruction, +or vice versa: DS instruction, then a branch, then a VMEM/GLOBAL/SCRATCH instruction. + +Mitigated by: +Only `s_waitcnt_vscnt null, 0`. Needed even if the first instruction is a load. |