hg: jdk-updates/jdk11u-dev: 8238811: C2: assert(i >= req() || i == 0 || is_Region() || is_Phi()) with -XX:+VerifyGraphEdges

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Changeset: f3d956ce3774
Author:    chagedorn
Date:      2020-02-13 15:08 +0100
URL:       https://hg.openjdk.java.net/jdk-updates/jdk11u-dev/rev/f3d956ce3774

8238811: C2: assert(i >= req() || i == 0 || is_Region() || is_Phi()) with -XX:+VerifyGraphEdges
Summary: Fix -XX:+VerifyGraphEdges by additionally handling ArrayCopyNodes and UnlockNodes and add some basic flag testing.
Reviewed-by: roland, neliasso

! src/hotspot/share/opto/node.cpp
+ test/hotspot/jtreg/compiler/c2/TestVerifyGraphEdges.java