backport: re PR middle-end/43690 (Internal compiler error detected by avr-gcc.)

	Backport from mainline
	2010-11-05  Jakub Jelinek  <jakub@redhat.com>

	PR middle-end/43690
	* gimplify.c (gimplify_asm_expr): If a "m" input is a
	{pre,post}{in,de}crement, fail.

	* c-c++-common/pr43690.c: New test.

From-SVN: r166650

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index bd022e95b4ae3cb90fa2bd1922398e42baf8e0e2..4f2a16a01d4be2a9c8e4685b316a7afe21063cbd 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,6 +1,12 @@
 2010-11-12  Jakub Jelinek  <jakub@redhat.com>
 
        Backport from mainline
+       2010-11-05  Jakub Jelinek  <jakub@redhat.com>
+
+       PR middle-end/43690
+       * gimplify.c (gimplify_asm_expr): If a "m" input is a
+       {pre,post}{in,de}crement, fail.
+
        2010-11-03  Jakub Jelinek  <jakub@redhat.com>
 
        PR tree-optimization/46107

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index be2b2c0ea0a418adc0f32fdf26faf6eb411e204c..08b992446d268ea771e7eaeb9e7ac6a66e2b0408 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,6 +1,11 @@
 2010-11-12  Jakub Jelinek  <jakub@redhat.com>
 
        Backport from mainline
+       2010-11-05  Jakub Jelinek  <jakub@redhat.com>
+
+       PR middle-end/43690
+       * c-c++-common/pr43690.c: New test.
+
        2010-11-03  Jakub Jelinek  <jakub@redhat.com>
 
        PR tree-optimization/46107

diff --git a/gcc/testsuite/c-c++-common/pr43690.c b/gcc/testsuite/c-c++-common/pr43690.c
new file mode 100644 (file)
index 0000000..67c6cb0
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/pr43690.c
@@ -0,0 +1,13 @@
+/* PR middle-end/43690 */
+/* { dg-do compile } */
+/* { dg-options "-O2" } */
+
+void
+foo (char *x)
+{
+  asm ("" : : "m" (x++));      /* { dg-error "is not directly addressable" } */
+  asm ("" : : "m" (++x));      /* { dg-error "is not directly addressable" } */
+  asm ("" : : "m" (x--));      /* { dg-error "is not directly addressable" } */
+  asm ("" : : "m" (--x));      /* { dg-error "is not directly addressable" } */
+  asm ("" : : "m" (x + 1));    /* { dg-error "is not directly addressable" } */
+}