git: openjdk/jdk: 8272558: IR Test Framework README misses some flags

[Tobias Hartmann]

Changeset: 5189047d
Author:    Tobias Hartmann <thartmann at openjdk.org>
Date:      2021-08-18 04:47:58 +0000
URL:       https://git.openjdk.java.net/jdk/commit/5189047d09e976cfd17d4ab5ec12097c242f3435

8272558: IR Test Framework README misses some flags

Reviewed-by: chagedorn

! test/hotspot/jtreg/compiler/lib/ir_framework/README.md