1
0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2024-11-23 11:13:28 +01:00
llvm-mirror/test/MC/MachO/previous.s
Bill Wendling 33bd6a2d6c Add .pushsection', .popsection', and `.previous' directives to Darwin ASM.
There are situations where inline ASM may want to change the section -- for
instance, to create a variable in the .data section. However, it cannot do this
without (potentially) restoring to the wrong section. E.g.:

  asm volatile (".section __DATA, __data\n\t"
                ".globl _fnord\n\t"
                "_fnord: .quad 1f\n\t"
                ".text\n\t"
                "1:" :::);

This may be wrong if this is inlined into a function that has a "section"
attribute. The user should use `.pushsection' and `.popsection' here instead.

The addition of `.previous' is added for completeness.
<rdar://problem/12048387>

llvm-svn: 161477
2012-08-08 06:30:30 +00:00

14 lines
234 B
ArmAsm

// RUN: llvm-mc -triple i386-apple-darwin9 %s -o - | FileCheck %s
.text
// CHECK: .section __TEXT,__text
.data
// CHECK: .section __DATA,__data
.previous
// CHECK: .section __TEXT,__text
.previous
// CHECK: .section __DATA,__data