bugGNU Development Chain for 68HC11/68HC12 - Bugs: bug #18808, internal compiler error in...


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bug #18808: internal compiler error in instantiate_virtual_regs_lossage

Submitter:  Sean D Epagnier <sdepagnier>
Submitted:  Tue 16 Jan 2007 09:43:52 PM UTC
Category:  gcc Severity:  3 - Normal
Item Group:  sw-bug Status:  None
Privacy:  Public Assigned to:  None
Open/Closed:  Open

Mon 22 Jan 2007 05:24:05 PM UTC, comment #2: 

I think I have fixed the problem by changing the andhi3
instruction to match a splitable_operand instead of a
general operand.

--- gcc-3.3.5/gcc/config/m68hc11/m68hc11.md     2006-11-02 15:24:29.000000000 -0
+++ gcc/gcc-3.3.5/gcc/config/m68hc11/m68hc11.md 2007-01-21 10:25:15.000000000 -0
@@ -3125,7 +3125,7 @@
 (define_expand "andhi3"
   [(set (match_operand:HI 0 "register_operand" "")
        (and:HI (match_operand:HI 1 "register_operand" "")
-               (match_operand:HI 2 "general_operand" "")))]
+               (match_operand:HI 2 "splitable_operand" "")))]

Sean D Epagnier <sdepagnier>
Tue 16 Jan 2007 09:50:01 PM UTC, comment #1: 

I hit enter on accident, and there is no way to edit the discussion.

the function is:

void func()
  short a, *b;
  a &= *b;

the internal compiler error occurs when compiling as:
m6812-elf-gcc -c test.c

if 'int' is used instead of 'short' the error goes away.
if '|' or '^' is used instead of '&' the error goes away.

Sean D Epagnier <sdepagnier>
Tue 16 Jan 2007 09:43:52 PM UTC, original submission:  

place the following code in a file called test.c:

void func()
  short a, *b;

Sean D Epagnier <sdepagnier>


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