Changes

Update global_symbols.txt.
llvm-svn: 375284

[NFC][CVP] Some tests for `mul` no-wrap deduction
llvm-svn: 375285

[analyzer] exploded-graph-rewriter: Unforget to censor stmt_ids in the
test.
They're not stable across machines.
Fixes buildbots after r375278.
llvm-svn: 375286

[X86] Fix register parsing in .seh_* in Intel syntax
Previously, the parser checked for a '%' prefix to indicate a register. 
In Intel syntax mode, LLVM does not print a '%' prefix on registers, so 
LLVM could not parse its own assembly output. Instead, require that 
register numbers be integer literals, or at least start with an integer 
literal, which is consistent with .cfi_* directive register parsing.
llvm-svn: 375287

Disable exit-on-SIGPIPE in lldb
Occasionally, during test teardown, LLDB writes to a closed pipe. 
Sometimes the communication is inherently unreliable, so LLDB tries to 
avoid being killed due to SIGPIPE (it calls `signal(SIGPIPE, SIG_IGN)`). 
However, LLVM's default SIGPIPE behavior overrides LLDB's, causing it to 
exit with IO_ERR.
Opt LLDB out of the default SIGPIPE behavior. I expect that this will 
resolve some LLDB test suite flakiness (tests randomly failing with 
IO_ERR) that we've seen since r344372.
rdar://55750240
Differential Revision: https://reviews.llvm.org/D69148
llvm-svn: 375288

gn build: Merge r375288
llvm-svn: 375289

[CVP] setDeducedOverflowingFlags(): actually inc per-opcode stats
This is really embarrassing. Those are pointers, so that offsets the 
pointers, not the statistics pointed-by the pointer...
llvm-svn: 375290