llvm/test/MC/AsmParser/at-pseudo-variable.s
Toma Tabacu 0b5a15b779 [MC] [IAS] Add support for the \@ .macro pseudo-variable.
Summary:
When used, it is substituted with the number of .macro instantiations we've done up to that point in time.
So if this is the 1st time we've instantiated a .macro (any .macro, regardless of name), \@ will instantiate to 0, if it's the 2nd .macro instantiation, it will instantiate to 1 etc.

It can only be used inside a .macro definition, an .irp definition or an .irpc definition (those last 2 uses are undocumented).

Reviewers: echristo, rafael

Reviewed By: rafael

Subscribers: dsanders, llvm-commits

Differential Revision: http://reviews.llvm.org/D9197

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235862 91177308-0d34-0410-b5e6-96231b3b80d8
2015-04-27 10:50:29 +00:00

65 lines
921 B
ArmAsm

# RUN: llvm-mc -triple i386-unknown-unknown %s | FileCheck %s
.macro A
add $1\@, %eax
.endm
.macro B
sub $1\@, %eax
.endm
A
# CHECK: addl $10, %eax
A
# CHECK: addl $11, %eax
B
# CHECK: subl $12, %eax
B
# CHECK: subl $13, %eax
# The following uses of \@ are undocumented, but valid:
.irpc foo,234
add $\foo\@, %eax
.endr
# CHECK: addl $24, %eax
# CHECK: addl $34, %eax
# CHECK: addl $44, %eax
.irp reg,%eax,%ebx
sub $2\@, \reg
.endr
# CHECK: subl $24, %eax
# CHECK: subl $24, %ebx
# Test that .irp(c) and .rep(t) do not increase \@.
# Only the use of A should increase \@, so we can test that it increases by 1
# each time.
.irpc foo,123
sub $\foo, %eax
.endr
A
# CHECK: addl $14, %eax
.irp reg,%eax,%ebx
sub $4, \reg
.endr
A
# CHECK: addl $15, %eax
.rept 2
sub $5, %eax
.endr
A
# CHECK: addl $16, %eax
.rep 3
sub $6, %eax
.endr
A
# CHECK: addl $17, %eax