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re PR target/33120 (Data not put in BSS section on Mac OS)

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PR target/33120
	* config/darwin.h (ASM_OUTPUT_ALIGNED_BSS): Add.
	* config/darwin.c (darwin_output_aligned_bss): Add.
	* config/darwin-protos.h: Add darwin_output_aligned_bss.

testsuite:
	* g++.dg/ext/instantiate2.C: Update for .zerofill as it doesn't
	follow the usual conventions for symbol definitions.
	* gcc.target/i386/darwin-zerofill.c: Add.

From-SVN: r157677
This commit is contained in:
Mike Stump 2010-03-23 20:02:57 +00:00 committed by Mike Stump
parent 478ab26ded
commit 5b5cfcb3b8
7 changed files with 67 additions and 1 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2010-03-23 Mike Stump <mikestump@comcast.net>
PR target/33120
* config/darwin.h (ASM_OUTPUT_ALIGNED_BSS): Add.
* config/darwin.c (darwin_output_aligned_bss): Add.
* config/darwin-protos.h: Add darwin_output_aligned_bss.
2010-03-23 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/43413

3
gcc/config/darwin-protos.h
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@ -90,3 +90,6 @@ extern void darwin_asm_output_anchor (rtx symbol);
extern bool darwin_kextabi_p (void);
extern void darwin_override_options (void);
extern void darwin_patch_builtins (void);
extern void darwin_output_aligned_bss (FILE *, tree, const char *,
unsigned HOST_WIDE_INT size,
unsigned int align);

36
gcc/config/darwin.c
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@ -1788,5 +1788,41 @@ darwin_patch_builtins (void)
#undef PATCH_BUILTIN_VARIADIC
}
void
darwin_output_aligned_bss(FILE *fp, tree decl, const char *name,
unsigned HOST_WIDE_INT size, unsigned int align)
{
bool weak = (DECL_P (decl)
&& DECL_WEAK (decl)
&& !lookup_attribute ("weak_import",
DECL_ATTRIBUTES (decl)));
if (size == 0)
size = 1;
align = floor_log2 (align / BITS_PER_UNIT);
if (DECL_ONE_ONLY (decl) || weak) {
if (TREE_READONLY (decl) || TREE_CONSTANT (decl))
switch_to_section (darwin_sections[const_data_coal_section]);
else
switch_to_section (darwin_sections[data_coal_section]);
ASM_OUTPUT_ALIGN (fp, align);
ASM_DECLARE_OBJECT_NAME (fp, name, decl);
ASM_OUTPUT_SKIP (fp, size);
return;
}
fputs (".zerofill ", fp);
/* We uniquely name sections based upon the alignment as otherwise
all symbols in the section would get that alignment. */
if (TREE_READONLY (decl) || TREE_CONSTANT (decl))
fputs ("__TEXT, ", fp);
else
fputs ("__DATA, ", fp);
fprintf (fp, "__bss%d, ", align);
assemble_name (fp, name);
fprintf (fp, ", "HOST_WIDE_INT_PRINT_UNSIGNED", %u\n",
size, align);
(* targetm.encode_section_info) (decl, DECL_RTL (decl), false);
machopic_define_symbol (DECL_RTL (decl));
}
#include "gt-darwin.h"

3
gcc/config/darwin.h
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@ -728,6 +728,9 @@ int darwin_label_is_anonymous_local_objc_name (const char *name);
} \
} while (0)
#define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
darwin_output_aligned_bss(FILE, DECL, NAME, SIZE, ALIGN)
/* The maximum alignment which the object file format can support in
bits. For Mach-O, this is 2^15 bytes. */

7
gcc/testsuite/ChangeLog
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@ -1,3 +1,10 @@
2010-03-23 Mike Stump <mikestump@comcast.net>
PR target/33120
* g++.dg/ext/instantiate2.C: Update for .zerofill as it doesn't
follow the usual conventions for symbol definitions.
* gcc.target/i386/darwin-zerofill.c: Add.
2010-03-22 Jason Merrill <jason@redhat.com>
PR c++/43333

3
gcc/testsuite/g++.dg/ext/instantiate2.C
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@ -8,7 +8,8 @@ template <class T> struct A {
template <class T> T A<T>::t = 0;
static template struct A<int>;
// { dg-final { scan-assembler "\n_?_ZN1AIiE1tE(:|\n|\t)" } }
// { dg-final { scan-assembler "\n_?_ZN1AIiE1tE(:|\n|\t)" { target { ! *-apple-darwin* } } } }
// { dg-final { scan-assembler ".zerofill __DATA, __bss2, __ZN1AIiE1tE" { target *-apple-darwin* } } }
void test_int() { A<int>::t = 42; }
// { dg-final { scan-assembler-not "\n_?_ZN1AIcE1tE(:|\n|\t)" } }

9
gcc/testsuite/gcc.target/i386/darwin-zerofill.c Normal file
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@ -0,0 +1,9 @@
/* { dg-do compile { target i?86-apple-darwin* x86_64-apple-darwin* } } */
/* { dg-options "-fno-common" } */
/* { dg-final { scan-assembler ".zerofill __DATA, __bss11, _ji, 4000000, 11" } } */
/* { dg-final { scan-assembler ".zerofill __TEXT, __bss8, _cj, 4000000, 8" } } */
/* PR33120 */
int ji[1000000] __attribute((aligned(2048)));
const int cj[1000000] __attribute((aligned(256)));