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riscv-gcc-1
Commit 0fc48de6 by Richard Stallman
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(divhisi3, udivhisi3, modhisi3, umodhi3): Comment out. 

(divhisi3, udivhisi3, modhisi3, umodhi3 recognizers): Comment out.

From-SVN: r5963
parent 3564e40e
Showing with 131 additions and 124 deletions
gcc/config/m68k/m68k.md
......@@ -2715,35 +2715,39 @@
#endif
}")
(define_insn "divhisi3"
[(set (match_operand:HI 0 "general_operand" "=d")
(truncate:HI
(div:SI
(match_operand:SI 1 "general_operand" "0")
(sign_extend:SI (match_operand:HI 2 "nonimmediate_operand" "dm")))))]
""
"*
{
#ifdef MOTOROLA
return \"divs%.w %2,%0\";
#else
return \"divs %2,%0\";
#endif
}")
(define_insn ""
[(set (match_operand:HI 0 "general_operand" "=d")
(truncate:HI (div:SI (match_operand:SI 1 "general_operand" "0")
(match_operand:SI 2 "const_int_operand" "n"))))]
""
"*
{
#ifdef MOTOROLA
return \"divs%.w %2,%0\";
#else
return \"divs %2,%0\";
#endif
}")
;; These patterns don't work because the divs instruction is undefined if
;; the quotient is more than 16 bits. This valid C would be miscompiled:
;; int n; short d; unsigned short q; ... q = (unsigned int) (n / d);
;; Imagine what happens when n = 100000 and d = 1.
;;(define_insn "divhisi3"
;; [(set (match_operand:HI 0 "general_operand" "=d")
;; (truncate:HI
;; (div:SI
;; (match_operand:SI 1 "general_operand" "0")
;; (sign_extend:SI (match_operand:HI 2 "nonimmediate_operand" "dm")))))]
;; ""
;; "*
;;{
;;#ifdef MOTOROLA
;; return \"divs%.w %2,%0\";
;;#else
;; return \"divs %2,%0\";
;;#endif
;;}")
;;(define_insn ""
;; [(set (match_operand:HI 0 "general_operand" "=d")
;; (truncate:HI (div:SI (match_operand:SI 1 "general_operand" "0")
;; (match_operand:SI 2 "const_int_operand" "n"))))]
;; ""
;; "*
;;{
;;#ifdef MOTOROLA
;; return \"divs%.w %2,%0\";
;;#else
;; return \"divs %2,%0\";
;;#endif
;;}")
(define_insn "udivhi3"
[(set (match_operand:HI 0 "general_operand" "=d")
......@@ -2759,35 +2763,36 @@
#endif
}")
(define_insn "udivhisi3"
[(set (match_operand:HI 0 "general_operand" "=d")
(truncate:HI
(udiv:SI
(match_operand:SI 1 "general_operand" "0")
(zero_extend:SI (match_operand:HI 2 "nonimmediate_operand" "dm")))))]
""
"*
{
#ifdef MOTOROLA
return \"divu%.w %2,%0\";
#else
return \"divu %2,%0\";
#endif
}")
(define_insn ""
[(set (match_operand:HI 0 "general_operand" "=d")
(truncate:HI (udiv:SI (match_operand:SI 1 "general_operand" "0")
(match_operand:SI 2 "const_int_operand" "n"))))]
""
"*
{
#ifdef MOTOROLA
return \"divu%.w %2,%0\";
#else
return \"divu %2,%0\";
#endif
}")
;; See comment before divhisi3 why these are commented out.
;;(define_insn "udivhisi3"
;; [(set (match_operand:HI 0 "general_operand" "=d")
;; (truncate:HI
;; (udiv:SI
;; (match_operand:SI 1 "general_operand" "0")
;; (zero_extend:SI (match_operand:HI 2 "nonimmediate_operand" "dm")))))]
;; ""
;; "*
;;{
;;#ifdef MOTOROLA
;; return \"divu%.w %2,%0\";
;;#else
;; return \"divu %2,%0\";
;;#endif
;;}")
;;(define_insn ""
;; [(set (match_operand:HI 0 "general_operand" "=d")
;; (truncate:HI (udiv:SI (match_operand:SI 1 "general_operand" "0")
;; (match_operand:SI 2 "const_int_operand" "n"))))]
;; ""
;; "*
;;{
;;#ifdef MOTOROLA
;; return \"divu%.w %2,%0\";
;;#else
;; return \"divu %2,%0\";
;;#endif
;;}")
(define_expand "divdf3"
[(set (match_operand:DF 0 "general_operand" "")
......@@ -2888,39 +2893,40 @@
#endif
}")
(define_insn "modhisi3"
[(set (match_operand:HI 0 "general_operand" "=d")
(truncate:HI
(mod:SI
(match_operand:SI 1 "general_operand" "0")
(sign_extend:SI (match_operand:HI 2 "nonimmediate_operand" "dm")))))]
""
"*
{
/* The swap insn produces cc's that don't correspond to the result. */
CC_STATUS_INIT;
#ifdef MOTOROLA
return \"divs%.w %2,%0\;swap %0\";
#else
return \"divs %2,%0\;swap %0\";
#endif
}")
(define_insn ""
[(set (match_operand:HI 0 "general_operand" "=d")
(truncate:HI (mod:SI (match_operand:SI 1 "general_operand" "0")
(match_operand:SI 2 "const_int_operand" "n"))))]
""
"*
{
/* The swap insn produces cc's that don't correspond to the result. */
CC_STATUS_INIT;
#ifdef MOTOROLA
return \"divs%.w %2,%0\;swap %0\";
#else
return \"divs %2,%0\;swap %0\";
#endif
}")
;; See comment before divhisi3 why these are commented out.
;;(define_insn "modhisi3"
;; [(set (match_operand:HI 0 "general_operand" "=d")
;; (truncate:HI
;; (mod:SI
;; (match_operand:SI 1 "general_operand" "0")
;; (sign_extend:SI (match_operand:HI 2 "nonimmediate_operand" "dm")))))]
;; ""
;; "*
;;{
;; /* The swap insn produces cc's that don't correspond to the result. */
;; CC_STATUS_INIT;
;;#ifdef MOTOROLA
;; return \"divs%.w %2,%0\;swap %0\";
;;#else
;; return \"divs %2,%0\;swap %0\";
;;#endif
;;}")
;;(define_insn ""
;; [(set (match_operand:HI 0 "general_operand" "=d")
;; (truncate:HI (mod:SI (match_operand:SI 1 "general_operand" "0")
;; (match_operand:SI 2 "const_int_operand" "n"))))]
;; ""
;; "*
;;{
;; /* The swap insn produces cc's that don't correspond to the result. */
;; CC_STATUS_INIT;
;;#ifdef MOTOROLA
;; return \"divs%.w %2,%0\;swap %0\";
;;#else
;; return \"divs %2,%0\;swap %0\";
;;#endif
;;}")
(define_insn "umodhi3"
[(set (match_operand:HI 0 "general_operand" "=d")
......@@ -2938,39 +2944,40 @@
#endif
}")
(define_insn "umodhisi3"
[(set (match_operand:HI 0 "general_operand" "=d")
(truncate:HI
(umod:SI
(match_operand:SI 1 "general_operand" "0")
(zero_extend:SI (match_operand:HI 2 "nonimmediate_operand" "dm")))))]
""
"*
{
/* The swap insn produces cc's that don't correspond to the result. */
CC_STATUS_INIT;
#ifdef MOTOROLA
return \"divu%.w %2,%0\;swap %0\";
#else
return \"divu %2,%0\;swap %0\";
#endif
}")
(define_insn ""
[(set (match_operand:HI 0 "general_operand" "=d")
(truncate:HI (umod:SI (match_operand:SI 1 "general_operand" "0")
(match_operand:SI 2 "const_int_operand" "n"))))]
""
"*
{
/* The swap insn produces cc's that don't correspond to the result. */
CC_STATUS_INIT;
#ifdef MOTOROLA
return \"divu%.w %2,%0\;swap %0\";
#else
return \"divu %2,%0\;swap %0\";
#endif
}")
;; See comment before divhisi3 why these are commented out.
;;(define_insn "umodhisi3"
;; [(set (match_operand:HI 0 "general_operand" "=d")
;; (truncate:HI
;; (umod:SI
;; (match_operand:SI 1 "general_operand" "0")
;; (zero_extend:SI (match_operand:HI 2 "nonimmediate_operand" "dm")))))]
;; ""
;; "*
;;{
;; /* The swap insn produces cc's that don't correspond to the result. */
;; CC_STATUS_INIT;
;;#ifdef MOTOROLA
;; return \"divu%.w %2,%0\;swap %0\";
;;#else
;; return \"divu %2,%0\;swap %0\";
;;#endif
;;}")
;;(define_insn ""
;; [(set (match_operand:HI 0 "general_operand" "=d")
;; (truncate:HI (umod:SI (match_operand:SI 1 "general_operand" "0")
;; (match_operand:SI 2 "const_int_operand" "n"))))]
;; ""
;; "*
;;{
;; /* The swap insn produces cc's that don't correspond to the result. */
;; CC_STATUS_INIT;
;;#ifdef MOTOROLA
;; return \"divu%.w %2,%0\;swap %0\";
;;#else
;; return \"divu %2,%0\;swap %0\";
;;#endif
;;}")
(define_insn "divmodsi4"
[(set (match_operand:SI 0 "general_operand" "=d")
......
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