Commit Graph

5 Commits

Author SHA1 Message Date
Preston Gurd 242ed3158a Support default parameters/arguments for assembler macros.
This patch is based on the one by PaX Team.

Patch by Andy Zhang!

llvm-svn: 164246
2012-09-19 20:29:04 +00:00
Jim Grosbach 20666162e9 Keep empty assembly macro argument values in the middle of the list.
Empty macro arguments at the end of the list should be as-if not specified at
all, but those in the middle of the list need to be kept so as not to screw
up the positional numbering. E.g.:
.macro foo
foo_-bash___:
  nop
.endm

foo 1, 2, 3, 4
foo 1, , 3, 4

Should create two labels, "foo_1_2_3_4" and "foo_1__3_4".

rdar://11948769

llvm-svn: 161002
2012-07-30 22:44:17 +00:00
Jim Grosbach 1e1d68f1b9 MC assembly parser handling for trailing comma in macro instantiation.
A trailing comma means no argument at all (i.e., as if the comma were not
present), not an empty argument to the invokee.

rdar://11252521

llvm-svn: 154863
2012-04-16 21:18:49 +00:00
Jim Grosbach 2c8e0ac85c MC asm parser macro argument count was wrong when empty.
evaluated to '1' when the argument list was empty (should be '0').

rdar://11057257

llvm-svn: 152967
2012-03-17 00:11:42 +00:00
Rafael Espindola 1134ab23df Basic support for macros with explicit arguments.
We still don't handle

* default values
* :req
* :vararg
* \()

llvm-svn: 132656
2011-06-05 02:43:45 +00:00