backport: re PR rtl-optimization/39241 (ICE in subreg_get_info, at rtlanal.c:3104)

2009-02-25  H.J. Lu  <hongjiu.lu@intel.com>

	Backport from mainline:
	2008-02-25  H.J. Lu  <hongjiu.lu@intel.com>

	PR rtl-optimization/39241
	* gcc.dg/torture/pr39241.c: New.

From-SVN: r144431

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 05099f0b5c09a6eb58e452fd8f9464f50fb79615..b5883b10b04a68d60563c2d63f48bab5c2a2c4d9 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,11 @@
+2009-02-25  H.J. Lu  <hongjiu.lu@intel.com>
+
+       Backport from mainline:
+       2008-02-25  H.J. Lu  <hongjiu.lu@intel.com>
+
+       PR rtl-optimization/39241
+       * gcc.dg/torture/pr39241.c: New.
+
 2009-02-21  Kaz Kojima  <kkojima@gcc.gnu.org>
 
        * gcc.c-torture/execute/pr39228.x: New.

diff --git a/gcc/testsuite/gcc.dg/torture/pr39241.c b/gcc/testsuite/gcc.dg/torture/pr39241.c
new file mode 100644 (file)
index 0000000..860a04d
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/torture/pr39241.c
@@ -0,0 +1,16 @@
+/* { dg-do compile } */
+/* { dg-options "-w" } */
+
+static inline int
+foo (float f)
+{
+  return *((int *) &f) - 1;
+}
+
+float
+bar (float x, float y, float *z)
+{
+  float c = y < 0.002f ? 0.002f : y;
+  float d = x < c ? c : x;
+  return z[foo (c)] + z[foo (d * 255.0f)];
+}