From: Richard Sandiford <rsandifo@gcc.gnu.org>
Date: Mon, 27 Jun 2011 09:33:06 +0000 (+0000)
Subject: re PR rtl-optimization/49169 (ARM: optimisations strip the Thumb/ARM mode bit off... 
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=afc3f22f90ca9b2e1028949e671acf78dcb2b4b3;p=gcc.git

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

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
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 76025dfeddc..e9dae06a29c 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -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
diff --git a/gcc/fold-const.c b/gcc/fold-const.c
index e48aae9f4ce..9428c11e4ac 100644
--- a/gcc/fold-const.c
+++ b/gcc/fold-const.c
@@ -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);
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 8c8e1b3dc79..c833b41a620 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -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
diff --git a/gcc/testsuite/gcc.dg/torture/pr49169.c b/gcc/testsuite/gcc.dg/torture/pr49169.c
new file mode 100644
index 00000000000..721b2ac6435
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/torture/pr49169.c
@@ -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" } } */