[all-commits] [llvm/llvm-project] 6ef783: [DebugInfo] Refactor code for emitting DWARF expre...

[Pavel Labath via All-commits]

  Branch: refs/heads/temp-test-main
  Home:   https://github.com/llvm/llvm-project
  Commit: 6ef7835afca246e623e9990dcd8c71204f5691e5
      https://github.com/llvm/llvm-project/commit/6ef7835afca246e623e9990dcd8c71204f5691e5
  Author: Pavel Labath <pavel at labath.sk>
  Date:   2020-11-23 (Mon, 23 Nov 2020)

  Changed paths:
    M llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
    M llvm/lib/CodeGen/AsmPrinter/DwarfExpression.cpp
    M llvm/lib/CodeGen/AsmPrinter/DwarfExpression.h
    A llvm/test/DebugInfo/ARM/implicit_value-_Float16.ll

  Log Message:
  -----------
  [DebugInfo] Refactor code for emitting DWARF expressions for FP constants

This patch moves the selection of the style used to emit the numbers
(DW_OP_implicit_value vs. DW_OP_const+DW_OP_stack_value) into
DwarfExpression::addUnsignedConstant. This logic is not FP-specific, and
it will be needed for large integers too.

The refactor also makes DW_OP_implicit_value (DW_OP_stack_value worked
already) be used for floating point constants other than float and
double, so I've added a _Float16 test for it.

Split off from D90916.

Differential Revision: https://reviews.llvm.org/D91058