+2009-06-30 Wei Guozhi <carrot@google.com>
+
+ PR/40416
+ * tree-ssa-sink.c (statement_sink_location): Stop sinking expression
+ if the target bb post dominates from bb.
+ * config/i386/i386.c (memory_address_length): Check existence of base
+ register before using it.
+
2009-06-29 DJ Delorie <dj@redhat.com>
* doc/install.texi (mep-x-elf): Correct chip's full name.
len = 4;
}
/* ebp always wants a displacement. Similarly r13. */
- else if (REG_P (base)
+ else if (base && REG_P (base)
&& (REGNO (base) == BP_REG || REGNO (base) == R13_REG))
len = 1;
/* ...like esp (or r12), which always wants an index. */
|| base == arg_pointer_rtx
|| base == frame_pointer_rtx
- || (REG_P (base)
+ || (base && REG_P (base)
&& (REGNO (base) == SP_REG || REGNO (base) == R12_REG)))
len += 1;
}
+2009-06-30 Wei Guozhi <carrot@google.com>
+
+ PR/40416
+ * gcc.dg/tree-ssa/ssa-sink-5.c: New testcase.
+
2009-06-29 Jason Merrill <jason@redhat.com>
PR c++/40274
--- /dev/null
+/* { dg-do compile } */
+/* { dg-options "-O2 -Os -fdump-tree-sink-stats" } */
+
+typedef short int16_t;
+typedef unsigned char uint8_t;
+
+void foo(int16_t runs[], uint8_t alpha[], int x, int count)
+{
+ int16_t* next_runs = runs + x;
+ uint8_t* next_alpha = alpha + x;
+
+ while (x > 0)
+ {
+ int n = runs[0];
+
+ if (x < n)
+ {
+ alpha[x] = alpha[0];
+ runs[0] = (int16_t)(x);
+ runs[x] = (int16_t)(n - x);
+ break;
+ }
+ runs += n;
+ alpha += n;
+ x -= n;
+ }
+
+ runs = next_runs;
+ alpha = next_alpha;
+ x = count;
+
+ for (;;)
+ {
+ int n = runs[0];
+
+ if (x < n)
+ {
+ alpha[x] = alpha[0];
+ break;
+ }
+ x -= n;
+ runs += n;
+ }
+}
+
+/* We should not sink the next_runs = runs + x calculation after the loop. */
+/* { dg-final { scan-tree-dump-times "Sunk statements:" 0 "sink" } } */
+/* { dg-final { cleanup-tree-dump "sink" } } */
|| sinkbb->loop_father != frombb->loop_father)
return false;
+ /* Move the expression to a post dominator can't reduce the number of
+ executions. */
+ if (dominated_by_p (CDI_POST_DOMINATORS, frombb, sinkbb))
+ return false;
+
*togsi = gsi_for_stmt (use);
return true;
}
|| sinkbb->loop_father != frombb->loop_father)
return false;
+ /* Move the expression to a post dominator can't reduce the number of
+ executions. */
+ if (dominated_by_p (CDI_POST_DOMINATORS, frombb, sinkbb))
+ return false;
+
*togsi = gsi_after_labels (sinkbb);
return true;