Code Quality: use legalizePostRegAlloc flag on Func instead of passing bool to Legalizers #5504
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…g bool to Legalizers ARM and ARM64 legalizers behave differently before and after register allocation. We've had bugs in the past where, mainly through static helper functions similar to Lowerer::InsertMove where we've had the flag wrong. This commit adds a flag on Func to tell the legalizer if it should behave as if register allocation has happened or not, and removes the need to pass the flags. The flag was not used on x86 and x64 There were a couple of places where the flag passed did not agree with whether register allocation has finished, in particular LinearScan::InsertLea (passed the flag true) and ARM and ARM64 LowererMD::ChangeToAssign (always passed false). I've added an RAII auto-restore helper to change the flag on the Func while those calls are in progress . While not ideal, it does have the benefit of being mroe expressive. I'm using a new flag instead of the existing (dbg only) isPostRegAlloc flag because the flag can be temporarily overriden.
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…n Func instead of passing bool to Legalizers Merge pull request #5504 from sigatrev:users/magardn/legalize ARM and ARM64 legalizers behave differently before and after register allocation. We've had bugs in the past where, mainly through static helper functions similar to Lowerer::InsertMove where we've had the flag wrong. This commit adds a flag on Func to tell the legalizer if it should behave as if register allocation has happened or not, and removes the need to pass the flags. The flag was not used on x86 and x64 There were a couple of places where the flag passed did not agree with whether register allocation has finished, in particular LinearScan::InsertLea (passed the flag true) and ARM and ARM64 LowererMD::ChangeToAssign (always passed false). I've added an RAII auto-restore helper to change the flag on the Func while those calls are in progress . While not ideal, it does have the benefit of being mroe expressive. I'm using a new flag instead of the existing (dbg only) isPostRegAlloc flag because the flag can be temporarily overriden.
chakrabot
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Jul 24, 2018
…egAlloc flag on Func instead of passing bool to Legalizers Merge pull request #5504 from sigatrev:users/magardn/legalize ARM and ARM64 legalizers behave differently before and after register allocation. We've had bugs in the past where, mainly through static helper functions similar to Lowerer::InsertMove where we've had the flag wrong. This commit adds a flag on Func to tell the legalizer if it should behave as if register allocation has happened or not, and removes the need to pass the flags. The flag was not used on x86 and x64 There were a couple of places where the flag passed did not agree with whether register allocation has finished, in particular LinearScan::InsertLea (passed the flag true) and ARM and ARM64 LowererMD::ChangeToAssign (always passed false). I've added an RAII auto-restore helper to change the flag on the Func while those calls are in progress . While not ideal, it does have the benefit of being mroe expressive. I'm using a new flag instead of the existing (dbg only) isPostRegAlloc flag because the flag can be temporarily overriden.
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ARM and ARM64 legalizers behave differently before and after register allocation. We've had bugs in the past where, mainly through static helper functions similar to Lowerer::InsertMove where we've had the flag wrong. This commit adds a flag on Func to tell the legalizer if it should behave as if register allocation has happened or not, and removes the need to pass the flags. The flag was not used on x86 and x64
There were a couple of places where the flag passed did not agree with whether register allocation has finished, in particular LinearScan::InsertLea (passed the flag true) and ARM and ARM64 LowererMD::ChangeToAssign (always passed false). I've added an RAII auto-restore helper to change the flag on the Func while those calls are in progress . While not ideal, it does have the benefit of being mroe expressive.
I'm using a new flag instead of the existing (dbg only) isPostRegAlloc flag because the flag can be temporarily overriden.