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| author | Jeffrey A Law <law@cygnus.com> | 1997-10-25 18:16:50 +0000 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 1997-10-25 12:16:50 -0600 |
| commit | a6f7ba1798530b13d702814433761bf392e84796 (patch) | |
| tree | aa1bc1c0cd86143b357b25ff6c6349872885b5c2 /gcc | |
| parent | fc55478797083a56aa91843dc2303496da502cac (diff) | |
| download | gcc-a6f7ba1798530b13d702814433761bf392e84796.zip gcc-a6f7ba1798530b13d702814433761bf392e84796.tar.gz gcc-a6f7ba1798530b13d702814433761bf392e84796.tar.bz2 | |
mn10300.h (TARGET_SWITCHES): Add -mmult-bug and -mno-mult-bug.
* 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
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/config/mn10300/mn10300.h | 8 | ||||
| -rw-r--r-- | gcc/config/mn10300/mn10300.md | 8 |
3 files changed, 20 insertions, 3 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index d26d464..2abf408 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -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. diff --git a/gcc/config/mn10300/mn10300.h b/gcc/config/mn10300/mn10300.h index 3201606..4c32b8d 100644 --- a/gcc/config/mn10300/mn10300.h +++ b/gcc/config/mn10300/mn10300.h @@ -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. */ diff --git a/gcc/config/mn10300/mn10300.md b/gcc/config/mn10300/mn10300.md index c9e7d33..f023478 100644 --- a/gcc/config/mn10300/mn10300.md +++ b/gcc/config/mn10300/mn10300.md @@ -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" |