NEW202442
Regression: testb3 is failing on trunk with a debug build. 
https://bugs.webkit.org/show_bug.cgi?id=202442
Summary Regression: testb3 is failing on trunk with a debug build.
Mark Lam
Reported 2019-10-01 18:26:39 PDT
ASSERTION FAILED: !m_availableRegs[tmp.bank()].contains(reg) ./b3/air/AirAllocateRegistersAndStackAndGenerateCode.cpp(131) : void JSC::B3::Air::GenerateAndAllocateRegisters::release(JSC::B3::Air::Tmp, JSC::Reg) 1 0x11123c309 WTFCrash 2 0x1118f2ffb WTFCrashWithInfo(int, char const*, char const*, int) 3 0x11197e31b JSC::B3::Air::GenerateAndAllocateRegisters::release(JSC::B3::Air::Tmp, JSC::Reg) 4 0x11197a982 JSC::B3::Air::GenerateAndAllocateRegisters::freeDeadTmpsIfNeeded() 5 0x11197a64e JSC::B3::Air::GenerateAndAllocateRegisters::generate(JSC::CCallHelpers&)::$_9::operator()(JSC::RegisterSet const&, bool) const 6 0x111978502 JSC::B3::Air::GenerateAndAllocateRegisters::generate(JSC::CCallHelpers&) 7 0x111a28a69 JSC::B3::Air::generate(JSC::B3::Air::Code&, JSC::CCallHelpers&) 8 0x11185dc45 JSC::B3::generate(JSC::B3::Procedure&, JSC::CCallHelpers&)
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Mark Lam
Comment 1 2019-10-01 19:20:02 PDT
svn revision r250176 fails svn revision r250175 passes This failure is caused by: r250176 | keith_miller@apple.com | 2019-09-20 19:11:37 -0700 (Fri, 20 Sep 2019) | 15 lines eliding a move in Air O0 needs to mark the dest's old reg as available https://bugs.webkit.org/show_bug.cgi?id=202066 Reviewed by Saam Barati. Also adds a new release method that handles all the invariants of returning a register to the available register pool.
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