llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-02-21 21:29:41 +00:00

History

Adrian Prantl e5ca21a2df Debug info: Teach SROA how to update debug info for fragmented variables.

This allows us to generate debug info for extremely advanced code such as

  typedef struct { long int a; int b;} S;

  int foo(S s) {
    return s.b;
  }

which at -O1 on x86_64 is codegen'd into

  define i32 @foo(i64 %s.coerce0, i32 %s.coerce1) #0 {
    ret i32 %s.coerce1, !dbg !24
  }

with this patch we emit the following debug info for this

  TAG_formal_parameter [3]
    AT_location( 0x00000000
                 0x0000000000000000 - 0x0000000000000006: rdi, piece 0x00000008, rsi, piece 0x00000004
                 0x0000000000000006 - 0x0000000000000008: rdi, piece 0x00000008, rax, piece 0x00000004 )
                 AT_name( "s" )
                 AT_decl_file( "/Volumes/Data/llvm/_build.ninja.release/test.c" )

Thanks to chandlerc, dblaikie, and echristo for their feedback on all
previous iterations of this patch!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224739 91177308-0d34-0410-b5e6-96231b3b80d8

2014-12-22 22:26:00 +00:00

Analysis

InstSimplify: Don't bother if getScalarSizeInBits returns zero

2014-12-20 04:45:33 +00:00

AsmParser

IR: Make metadata typeless in assembly

2014-12-15 19:07:53 +00:00

Bitcode

Fix Visual C++ error "'llvm::make_unique' : ambiguous call to overloaded function".

2014-12-18 10:03:35 +00:00

CodeGen

[CodeGenPrepare] Handle properly the promotion of operands when this does not