------- Comment #2 from ubizjak at gmail dot com 2008-06-25 13:40 -------
(In reply to comment #1)
> Confirmed. Looks like a cut&paste error. Uros?
Indeed: I'm testing following patch:
Index: i386.md
===================================================================
--- i386.md (revision 137106)
+++ i386.md (working copy)
@@ -7533,7 +7533,7 @@
(define_insn "*subqi_1"
[(set (match_operand:QI 0 "nonimmediate_operand" "=qm,q")
(minus:QI (match_operand:QI 1 "nonimmediate_operand" "0,0")
- (match_operand:QI 2 "general_operand" "qn,qmn")))
+ (match_operand:QI 2 "general_operand" "qn,qm")))
(clobber (reg:CC FLAGS_REG))]
"ix86_binary_operator_ok (MINUS, QImode, operands)"
"sub{b}\t{%2, %0|%0, %2}"
@@ -7543,7 +7543,7 @@
(define_insn "*subqi_1_slp"
[(set (strict_low_part (match_operand:QI 0 "nonimmediate_operand" "+qm,q"))
(minus:QI (match_dup 0)
- (match_operand:QI 1 "general_operand" "qn,qmn")))
+ (match_operand:QI 1 "general_operand" "qn,qm")))
(clobber (reg:CC FLAGS_REG))]
"(! TARGET_PARTIAL_REG_STALL || optimize_size)
&& !(MEM_P (operands[0]) && MEM_P (operands[1]))"
@@ -7555,10 +7555,10 @@
[(set (reg FLAGS_REG)
(compare
(minus:QI (match_operand:QI 1 "nonimmediate_operand" "0,0")
- (match_operand:QI 2 "general_operand" "qi,qm"))
+ (match_operand:QI 2 "general_operand" "qn,qm"))
(const_int 0)))
- (set (match_operand:HI 0 "nonimmediate_operand" "=qm,q")
- (minus:HI (match_dup 1) (match_dup 2)))]
+ (set (match_operand:QI 0 "nonimmediate_operand" "=qm,q")
+ (minus:QI (match_dup 1) (match_dup 2)))]
"ix86_match_ccmode (insn, CCGOCmode)
&& ix86_binary_operator_ok (MINUS, QImode, operands)"
"sub{b}\t{%2, %0|%0, %2}"
@@ -7568,9 +7568,9 @@
(define_insn "*subqi_3"
[(set (reg FLAGS_REG)
(compare (match_operand:QI 1 "nonimmediate_operand" "0,0")
- (match_operand:QI 2 "general_operand" "qi,qm")))
- (set (match_operand:HI 0 "nonimmediate_operand" "=qm,q")
- (minus:HI (match_dup 1) (match_dup 2)))]
+ (match_operand:QI 2 "general_operand" "qn,qm")))
+ (set (match_operand:QI 0 "nonimmediate_operand" "=qm,q")
+ (minus:QI (match_dup 1) (match_dup 2)))]
"ix86_match_ccmode (insn, CCmode)
&& ix86_binary_operator_ok (MINUS, QImode, operands)"
"sub{b}\t{%2, %0|%0, %2}"
BTW: I don't think that "i" makes sense here. I guess that i.e. "sbb $.Lx, %al"
will upset the assembler with immediate operand out of range.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36627
