1 files changed, 78 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.target/avr/tiny-caller-save.c b/gcc/testsuite/gcc.target/avr/tiny-caller-save.c
new file mode 100644
index 0000000..0e46ee0
--- /dev/null
+++ b/gcc/testsuite/gcc.target/avr/tiny-caller-save.c
@@ -0,0 +1,78 @@
+/* { dg-do compile } */
+/* { dg-options "-march=avrtiny -gdwarf -Os" } */
+
+/* This is a stripped down piece of libgcc2.c that triggerd an ICE for avr with
+   "-march=avrtiny -g -Os"; replace_reg_with_saved_mem would generate:
+   (concatn:SI [
+                    (reg:SI 18 r18)
+                    (reg:SI 19 r19)
+                    (mem/c:QI (plus:HI (reg/f:HI 28 r28)
+                            (const_int 43 [0x2b])) [6  S1 A8])
+                    (mem/c:QI (plus:HI (reg/f:HI 28 r28)
+                            (const_int 44 [0x2c])) [6  S1 A8])
+                ]) */
+
+typedef int SItype __attribute__ ((mode (SI)));
+typedef unsigned int USItype __attribute__ ((mode (SI)));
+typedef int DItype __attribute__ ((mode (DI)));
+typedef unsigned int UDItype __attribute__ ((mode (DI)));
+struct DWstruct
+{
+  SItype low, high;
+};
+typedef union
+{
+  struct DWstruct s;
+  DItype ll;
+} DWunion;
+
+UDItype
+__udivmoddi4 (UDItype n, UDItype d)
+{
+  const DWunion nn = {.ll = n };
+  const DWunion dd = {.ll = d };
+  USItype d0, d1, n2;
+  USItype q0;
+
+  d0 = dd.s.low;
+  d1 = dd.s.high;
+  n2 = nn.s.high;
+
+      USItype m0;
+
+      do
+	{
+	  USItype __d1, __d0, __q1, __q0;
+	  USItype __r1, __m;
+	  __d1 = ((USItype) (d1) >> 16);
+	  __d0 = ((USItype) (d1) & (((USItype) 1 << 16) - 1));
+	  __r1 = (n2) % __d1;
+	  __q1 = (n2) / __d1;
+	  __m = (USItype) __q1 *__d0;
+	  __r1 -= __m;
+	  __q0 = __r1 / __d1;
+	  (q0) = (USItype) __q1 *((USItype) 1 << 16) | __q0;
+	}
+      while (0);
+      do
+	{
+	  USItype __x0, __x1, __x2;
+	  USItype __ul, __vl, __uh, __vh;
+	  __ul = ((USItype) (q0) & (((USItype) 1 << 16) - 1));
+	  __uh = ((USItype) (q0) >> 16);
+	  __vl = ((USItype) (d0) & (((USItype) 1 << 16) - 1));
+	  __vh = ((USItype) (d0) >> 16);
+	  __x0 = (USItype) __ul *__vl;
+	  __x1 = (USItype) __ul *__vh;
+	  __x2 = (USItype) __uh *__vl;
+	  __x1 += ((USItype) (__x0) >> 16);
+	  __x1 += __x2;
+	  (m0) =
+	    ((USItype) (__x1) & (((USItype) 1 << 16) - 1)) *
+	    ((USItype) 1 << 16) +
+	    ((USItype) (__x0) & (((USItype) 1 << 16) - 1));
+	}
+      while (0);
+
+return m0;
+}