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Author SHA1 Message Date
Matt Arsenault 971c85ebb4 AMDGPU: Treat 0 as private null pointer in addrspacecast lowering 
llvm-svn: 297658
 2017-03-13 19:47:31 +00:00
Yaxun Liu 8f844f3960 [AMDGPU] Lower null pointers in static variable initializer 
For amdgcn target Clang generates addrspacecast to represent null pointers in private and local address spaces.

    In LLVM codegen, the static variable initializer is lowered by virtual function AsmPrinter::lowerConstant which is target generic. Since addrspacecast is target specific, AsmPrinter::lowerConst

    This patch overrides AsmPrinter::lowerConstant with AMDGPUAsmPrinter::lowerConstant, which is able to lower the target-specific addrspacecast in the null pointer representation so that -1 is co

    Differential Revision: https://reviews.llvm.org/D29284

llvm-svn: 294265
 2017-02-07 00:43:21 +00:00