re PR target/64061 (ICE: in gen_rtx_SUBREG, at emit-rtl.c:894 with -O2 -g -fno-dce...

2014-11-28  Vladimir Makarov  <vmakarov@redhat.com>

	PR target/64061
	* lra.c (lra_substitute_pseudo): Ignore constant with int mode for
	subreg.

2014-11-28  Vladimir Makarov  <vmakarov@redhat.com>

	PR target/64061
	* gcc.target/i386/pr64061.c: New.

From-SVN: r218171

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index b8f8dbe8bbed5034a03dde05893609b4ffd7237e..92e0af5dff72aa82b20daa9e23964bf18cbb22d2 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2014-11-28  Vladimir Makarov  <vmakarov@redhat.com>
+
+       PR target/64061
+       * lra.c (lra_substitute_pseudo): Ignore constant with int mode for
+       subreg.
+
 2014-11-28  Segher Boessenkool  <segher@kernel.crashing.org>
 
        PR target/64093

diff --git a/gcc/lra.c b/gcc/lra.c
index ec122c7762fa93afc2f9a97cfe6f9df94794cf92..65350631501262bc7a05b97e4a45499ffc7b518c 100644 (file)
--- a/gcc/lra.c
+++ b/gcc/lra.c
@@ -1806,7 +1806,8 @@ lra_substitute_pseudo (rtx *loc, int old_regno, rtx new_reg)
       machine_mode mode = GET_MODE (*loc);
       machine_mode inner_mode = GET_MODE (new_reg);
 
-      if (mode != inner_mode)
+      if (mode != inner_mode
+         && ! (CONST_INT_P (new_reg) && SCALAR_INT_MODE_P (mode)))
        {
          if (GET_MODE_SIZE (mode) >= GET_MODE_SIZE (inner_mode)
              || ! SCALAR_INT_MODE_P (inner_mode))

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 39aa1789e43055f14ab31fa3ca20c33018d1c5d6..31bcf5cd6837801c0ec77dc77331119921eeb8a5 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2014-11-28  Vladimir Makarov  <vmakarov@redhat.com>
+
+       PR target/64061
+       * gcc.target/i386/pr64061.c: New.
+
 2014-11-28  Marek Polacek  <polacek@redhat.com>
 
        * c-c++-common/ubsan/shift-8.c: New test.
@@ -5,7 +10,7 @@
 2014-11-28  Vladimir Makarov  <vmakarov@redhat.com>
 
        PR rtl-optimization/64087
-       *  gcc.dg/pr64087.c: New.
+       * gcc.dg/pr64087.c: New.
 
 2014-11-28  H.J. Lu  <hongjiu.lu@intel.com>
 

diff --git a/gcc/testsuite/gcc.target/i386/pr64061.c b/gcc/testsuite/gcc.target/i386/pr64061.c
new file mode 100644 (file)
index 0000000..5794d06
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr64061.c
@@ -0,0 +1,21 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -g -fno-dce -fno-tree-dce" } */
+
+extern void *buf;
+
+extern void bar (void);
+
+int
+foo (int i)
+{
+  int j = 0;
+  if (__builtin_setjmp (buf) == 0)
+    {
+      while (1)
+      {
+        j = 1;
+         bar ();
+         }
+    }
+  return j ? i : 0;
+}