f5bdc88e4d
Before this patch, register writes were always invalidated by the RegisterFile at instruction commit stage. So, the RegisterFile was often losing the knowledge about the `execute cycle` of writes already committed. While this was not problematic for non-delayed reads, this was sometimes leading to inaccurate read latency computations in the presence of negative read-advance cycles. This patch fixes the issue by changing how the RegisterFile component internally keeps track of the `execute cycle` information of each write. On every instruction executed, the RegisterFile gets notified by the RetireStage, so that it can internally record the execute cycle of each executed write. The `execute cycle` information is stored within WriteRef itself, and it is not invalidated when the write is committed. |
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| .. | ||
| Atom | ||
| Barcelona | ||
| BdVer2 | ||
| Broadwell | ||
| BtVer2 | ||
| Generic | ||
| Haswell | ||
| SLM | ||
| SandyBridge | ||
| SkylakeClient | ||
| SkylakeServer | ||
| Znver1 | ||
| Znver2 | ||
| bextr-read-after-ld.s | ||
| bzhi-read-after-ld.s | ||
| cpus.s | ||
| default-iterations.s | ||
| dispatch_width.s | ||
| fma3-read-after-ld-1.s | ||
| fma3-read-after-ld-2.s | ||
| in-order-cpu.s | ||
| intel-syntax.s | ||
| invalid-assembly-sequence.s | ||
| invalid-cpu.s | ||
| invalid-empty-file.s | ||
| lit.local.cfg | ||
| llvm-mca-markers-1.s | ||
| llvm-mca-markers-2.s | ||
| llvm-mca-markers-3.s | ||
| llvm-mca-markers-4.s | ||
| llvm-mca-markers-5.s | ||
| llvm-mca-markers-6.s | ||
| llvm-mca-markers-7.s | ||
| llvm-mca-markers-8.s | ||
| llvm-mca-markers-9.s | ||
| llvm-mca-markers-10.s | ||
| llvm-mca-markers-11.s | ||
| llvm-mca-markers-12.s | ||
| no-sched-model.s | ||
| option-all-stats-1.s | ||
| option-all-stats-2.s | ||
| option-all-views-1.s | ||
| option-all-views-2.s | ||
| option-no-stats-1.s | ||
| print-imm-hex-1.s | ||
| print-imm-hex-2.s | ||
| read-after-ld-1.s | ||
| read-after-ld-2.s | ||
| read-after-ld-3.s | ||
| register-file-statistics.s | ||
| scheduler-queue-usage.s | ||
| show-encoding.s | ||
| sqrt-rsqrt-rcp-memop.s | ||
| uop-queue.s | ||
| variable-blend-read-after-ld-1.s | ||
| variable-blend-read-after-ld-2.s | ||