[PATCH] D55616: Emit ASM input in a constant context

[Bill Wendling via Phabricator via cfe-commits]

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As a side note, the number of ways to evaluate a constant expression are legion in clang. They should really be unified...


Some ASM input constraints (e.g., "i" and "n") require immediate values. At O0,
very few code transformations are performed. So if we cannot resolve to an
immediate when emitting the ASM input we shouldn't delay its processing.


Repository:
  rC Clang

https://reviews.llvm.org/D55616

Files:
  include/clang/AST/Expr.h
  lib/AST/ExprConstant.cpp
  lib/CodeGen/CGStmt.cpp
  test/CodeGen/builtin-constant-p.c

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