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mn10300.h (TARGET_SWITCHES): Add -mmult-bug and -mno-mult-bug.

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* mn10300.h (TARGET_SWITCHES): Add -mmult-bug and -mno-mult-bug.
        (TARGET_MULT_BUG): Define.
        (TARGET_DEFAULT): Default to TARGET_MULT_BUG.
        * mn10300.md (mulsi3): Handle TARGET_MULT_BUG.

From-SVN: r16173
This commit is contained in:
Jeffrey A Law 1997-10-25 18:16:50 +00:00 committed by Jeff Law
parent fc55478797
commit a6f7ba1798
3 changed files with 20 additions and 3 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
Sat Oct 25 12:20:58 1997 Jeffrey A Law (law@cygnus.com)
* mn10300.h (TARGET_SWITCHES): Add -mmult-bug and -mno-mult-bug.
(TARGET_MULT_BUG): Define.
(TARGET_DEFAULT): Default to TARGET_MULT_BUG.
* mn10300.md (mulsi3): Handle TARGET_MULT_BUG.
Fri Oct 24 17:40:34 1997 Jeffrey A Law (law@cygnus.com)
* mn10200.c (indirect_memory_operand): Delete unused function.

8
gcc/config/mn10300/mn10300.h
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@ -49,11 +49,15 @@ extern struct rtx_def *zero_areg;
where VALUE is the bits to set or minus the bits to clear.
An empty string NAME is used to identify the default VALUE. */
/* Generate code to work around mul/mulq bugs on the mn10300. */
#define TARGET_MULT_BUG (target_flags & 0x1)
#define TARGET_SWITCHES \
{{ "", TARGET_DEFAULT}}
{{ "mult-bug", 0x1}, \
{ "no-mult-bug", -0x1}, \
{ "", TARGET_DEFAULT}}
#ifndef TARGET_DEFAULT
#define TARGET_DEFAULT 0
#define TARGET_DEFAULT 0x1
#endif
/* Print subsidiary information on the compiler version in use. */

8
gcc/config/mn10300/mn10300.md
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@ -730,7 +730,13 @@
(mult:SI (match_operand:SI 1 "register_operand" "%0")
(match_operand:SI 2 "register_operand" "d")))]
""
"mul %2,%0"
"*
{
if (TARGET_MULT_BUG)
return \"nop\;nop\;mul %2,%0\";
else
return \"mul %2,%0\";
}"
[(set_attr "cc" "set_zn")])
(define_insn "udivmodsi4"