Hi,
I noticed that in the tip build of d8 for ARM64, if I have iterations big
enough that that can generate jitted code, d8 fails the following way:
$ ./d8 --perf-prof opt.js
#
# Fatal error in
../../src/compiler/backend/arm64/unwinding-info-writer-arm64.cc, line 38
# Debug check failed: block->predecessors().empty() ||
block->successors().empty().
#
Here's simple test case:
$ cat foo.js
function add(x, y) {
return x + y;
}
for (var x = 0; x < 1000000; x++)
add(x, 2);
Then I started looking at the tagged v8. I found that all 7.3.X also fails
in the similar way.
I always build d8 in the following way:
gn gen --args="target_cpu=\"arm64\" is_component_build=false"
out/7.3.15.debug
autoninja -C out/7.3.15.debug
The last good one that works with --perf-prof is 7.1.1. I have not checked
any of the 7.2.x
I am wondering if this is now a known issue, and if someone is already
looking at it.
Thanks.
Sirish
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