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3 Commits

Author SHA1 Message Date
Adrian Prantl
f10ec50249 Debug info: Use DW_OP_bit_piece instead of DW_OP_piece in the 
intermediate representation. This
- increases consistency by using the same granularity everywhere
- allows for pieces < 1 byte
- DW_OP_piece didn't actually allow storing an offset.

Part of PR22495.

llvm-svn: 228631
 2015-02-09 23:57:15 +00:00
Adrian Prantl
f80b6c11e8 Replace this testcase with an even shorter one provided by dblaikie. 
llvm-svn: 227152
 2015-01-27 00:22:17 +00:00
Adrian Prantl
803463121a Debug info: Fix PR22296 by omitting the DW_AT_location if we lost the 
physical register that is described in a DBG_VALUE.

In the testcase the DBG_VALUE describing "p5" becomes unavailable
because the register its address is in is clobbered and we (currently)
aren't smart enough to realize that the value is rematerialized immediately
after the DBG_VALUE and/or is actually a stack slot.

llvm-svn: 227056
 2015-01-25 19:04:08 +00:00