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re PR rtl-optimization/49169 (ARM: optimisations strip the Thumb/ARM mode bit off function pointers)

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gcc/
2011-07-24  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/49169
	* fold-const.c (get_pointer_modulus_and_residue): Don't rely on
	the alignment of function decls.

gcc/testsuite/
2011-07-24  Michael Hope  <michael.hope@linaro.org>
	    Richard Sandiford  <richard.sandiford@linaro.org>

	PR tree-optimization/49169
	* gcc.dg/torture/pr49169.c: New test.

From-SVN: r175427
This commit is contained in:
Richard Sandiford 2011-06-27 09:33:06 +00:00
parent d38e4e3fc3
commit afc3f22f90
4 changed files with 27 additions and 1 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2011-06-27 Richard Guenther <rguenther@suse.de>
PR tree-optimization/49169
* fold-const.c (get_pointer_modulus_and_residue): Don't rely on
the alignment of function decls.
2011-06-26 Iain Sandoe <iains@gcc.gnu.org>
PR target/47997

3
gcc/fold-const.c
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@ -9216,7 +9216,8 @@ get_pointer_modulus_and_residue (tree expr, unsigned HOST_WIDE_INT *residue,
*residue = 0;
code = TREE_CODE (expr);
if (code == ADDR_EXPR)
if (code == ADDR_EXPR
&& TREE_CODE (TREE_OPERAND (expr, 0)) != FUNCTION_DECL)
{
unsigned int bitalign;
bitalign = get_object_alignment_1 (TREE_OPERAND (expr, 0), residue);

6
gcc/testsuite/ChangeLog
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@ -1,3 +1,9 @@
2011-06-27 Michael Hope <michael.hope@linaro.org>
Richard Sandiford <richard.sandiford@linaro.org>
PR tree-optimization/49169
* gcc.dg/torture/pr49169.c: New test.
2011-06-26 John David Anglin <dave.anglin@nrc-cnrc.gc.ca>
PR testsuite/49529

13
gcc/testsuite/gcc.dg/torture/pr49169.c Normal file
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@ -0,0 +1,13 @@
#include <stdlib.h>
#include <stdint.h>
int
main (void)
{
void *p = main;
if ((intptr_t) p & 1)
abort ();
return 0;
}
/* { dg-final { scan-assembler "abort" } } */