The "rotl<mode>3" expanders (mode \in {HI,SI,DI}) violates synopsis by
using 4 operands instead of 3. This runs in ICE in top of
optabs.c:maybe_gen_insn.
The right way to do this is to use match_dup, not match_operand. So
the fix is obvious.
Regenerated avr-gcc and run against avr testsuite:
gcc.target/avr/torture/pr41885.c generates these patterns
Johann
2011-04-14 Georg-Johann Lay <[email protected]>
* config/avr/avr.md ("rotlhi3", "rotlsi3", "rotldi3"): Fix
expanders operand 3 from match_operand to match_dup.
Index: config/avr/avr.md
===================================================================
--- config/avr/avr.md (Revision 172416)
+++ config/avr/avr.md (Arbeitskopie)
@@ -1521,7 +1521,7 @@ (define_expand "rotl<mode>3"
[(parallel [(set (match_operand:HIDI 0 "register_operand" "")
(rotate:HIDI (match_operand:HIDI 1 "register_operand" "")
(match_operand:VOID 2 "const_int_operand" "")))
- (clobber (match_operand 3 ""))])]
+ (clobber (match_dup 3))])]
""
"
{
