Turbofan generates bitcast nodes like BitcastWordToTaggedSigned to
ensure the value types of definitions and uses are matched. These
nodes can be elided after MachineGraphVerifier verifying the graph.
This can avoid generating redundant instructions:
Before:
xorl r15,r15
cmpl [rdx+0xb],r15
After:
cmpl [rdx+0xb],0x0
Change-Id: I84bc1b05d77ed9487001e34a93dfe14e45a7a678
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3837161
Commit-Queue: Hao A Xu <hao.a.xu@intel.com>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/main@{#83811}
... and apply zone filter to the graph header.
Bug: v8:10572
Change-Id: I923f2342a064864aeac693c482c09fee3eda28ee
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2401419
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69789}
Also use outer-function name as a ZONE_NAME instead of file:line
and give explicit names to parser and preparser zones.
Bug: v8:10572
Change-Id: I9b5acb23322889d8538a34bc888fd6f610eb6893
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2322627
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69104}
... collected via --trace-zone-stats flag or v8.zone_stats trace
category.
This is an initial version inspired by heap-stats UI.
Bug: v8:10572
Change-Id: Ib87cf0b4e120bc99683227eef02668a2a5c3d594
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2226855
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#68133}
