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How can I add my pass before X86 AT&T-Style Assembly Printer pass? I need to change MachineFunction and save changes to the asm file. The problem is that my pass is triggered after all.

Pass debug:

  • 0x202a430 Freeing Pass 'Execution dependency fix' on Function 'InterlockedBitTestAndSet'... 0x202a430 Executing Pass 'X86 AT&T-Style Assembly Printer' on Function 'InterlockedBitTestAndSet'... 0x2094f80 Required Analyses: Uninitialized Pass, Machine Module Information, Create Garbage Collector Module Metadata

    -*- 'X86 AT&T-Style Assembly Printer' is the last user of following pass instances. Free these instances 0x202a430 Freeing Pass 'X86 AT&T-Style Assembly Printer' on Function 'InterlockedBitTestAndSet'... 0x202a430 Executing Pass 'Delete Garbage Collector Information' on Function 'InterlockedBitTestAndSet'... 0x2095268 Required Analyses: Create Garbage Collector Module Metadata

    -*- 'Delete Garbage Collector Information' is the last user of following pass instances. Free these instances 0x202a430 Freeing Pass 'Delete Garbage Collector Information' on Function 'InterlockedBitTestAndSet'... 0x202a430 Executing Pass 'Simple Register Allocator' on Function 'InterlockedBitTestAndSet'... 0x20955b8 Required Analyses: Uninitialized Pass

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user2440317
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1 Answers1

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Take a look at LLVMTargetMachine::addPassesToEmitFile which is implemented in LLVMTargetMachine.cpp.

That can be a reasonable place to add any pass you want to run before the AsmPrinter pass is invoked.

zr.
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