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re PR target/83100 (powerpc: internal compiler error: in get_variable_section, at varasm.c:1150 with -fdata-sections)

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PR target/83100
	* varasm.c (bss_initializer_p): Return true for DECL_COMMON
	TREE_READONLY decls.

	* gcc.dg/pr83100-1.c: New test.
	* gcc.dg/pr83100-2.c: New test.
	* gcc.dg/pr83100-3.c: New test.
	* gcc.dg/pr83100-4.c: New test.

From-SVN: r255160
This commit is contained in:
Jakub Jelinek 2017-11-27 09:34:50 +01:00 committed by Jakub Jelinek
parent 99282f81a6
commit 9adeb64ab9
7 changed files with 52 additions and 3 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2017-11-27 Jakub Jelinek <jakub@redhat.com>
PR target/83100
* varasm.c (bss_initializer_p): Return true for DECL_COMMON
TREE_READONLY decls.
2017-11-27 Markus Trippelsdorf <markus@trippelsdorf.de>
PR rtl-optimization/82488

8
gcc/testsuite/ChangeLog
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@ -1,3 +1,11 @@
2017-11-27 Jakub Jelinek <jakub@redhat.com>
PR target/83100
* gcc.dg/pr83100-1.c: New test.
* gcc.dg/pr83100-2.c: New test.
* gcc.dg/pr83100-3.c: New test.
* gcc.dg/pr83100-4.c: New test.
2017-11-26 Julia Koval <julia.koval@intel.com>
* gcc.target/i386/funcspec-56.inc: Handle new march.

7
gcc/testsuite/gcc.dg/pr83100-1.c Normal file
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@ -0,0 +1,7 @@
/* PR target/83100 */
/* { dg-do compile { target *-*-linux* *-*-gnu* } } */
/* { dg-options "-O2 -fcommon -fdata-sections" } */
const int a;
/* { dg-final { scan-assembler "comm" } } */

15
gcc/testsuite/gcc.dg/pr83100-2.c Normal file
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@ -0,0 +1,15 @@
/* PR target/83100 */
/* { dg-do run } */
/* { dg-options "-O2 -fcommon -fdata-sections" } */
/* { dg-additional-sources pr83100-3.c } */
/* { dg-skip-if "-fdata-sections not supported" { hppa*-*-hpux* nvptx-*-* } } */
const int a;
int
main ()
{
if (a != 7)
__builtin_abort ();
return 0;
}

6
gcc/testsuite/gcc.dg/pr83100-3.c Normal file
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@ -0,0 +1,6 @@
/* PR target/83100 */
/* { dg-do compile } */
/* { dg-options "-O2 -fcommon -fdata-sections" } */
/* { dg-skip-if "-fdata-sections not supported" { hppa*-*-hpux* nvptx-*-* } } */
const int a = 7;

7
gcc/testsuite/gcc.dg/pr83100-4.c Normal file
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@ -0,0 +1,7 @@
/* PR target/83100 */
/* { dg-do compile { target *-*-linux* *-*-gnu* } } */
/* { dg-options "-O2 -fno-common -fdata-sections" } */
const int a;
/* { dg-final { scan-assembler "rodata.a" { target i?86-*-* x86_64-*-* } } } */

6
gcc/varasm.c
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@ -986,9 +986,9 @@ decode_reg_name (const char *name)
bool
bss_initializer_p (const_tree decl)
{
/* Do not put constants into the .bss section, they belong in a readonly
section. */
return (!TREE_READONLY (decl)
/* Do not put non-common constants into the .bss section, they belong in
a readonly section. */
return ((!TREE_READONLY (decl) || DECL_COMMON (decl))
&& (DECL_INITIAL (decl) == NULL
/* In LTO we have no errors in program; error_mark_node is used
to mark offlined constructors. */