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| author | Matthew Hiller <hiller@redhat.com> | 2001-03-29 02:32:46 +0000 |
|---|---|---|
| committer | Matthew Hiller <hiller@gcc.gnu.org> | 2001-03-29 02:32:46 +0000 |
| commit | 498cf3d0edd7db5c044dc73b8b9c37c8f6906fd6 (patch) | |
| tree | 62b821db395e83b74400dea719d7f47b4f80b576 /gcc | |
| parent | 3b905056f966e7e20f93e3c059e4928723981556 (diff) | |
| download | gcc-498cf3d0edd7db5c044dc73b8b9c37c8f6906fd6.zip gcc-498cf3d0edd7db5c044dc73b8b9c37c8f6906fd6.tar.gz gcc-498cf3d0edd7db5c044dc73b8b9c37c8f6906fd6.tar.bz2 | |
mn10300.md (cmpsi): Fix first alternative's output template.
2001-03-28 Matthew Hiller <hiller@redhat.com>
* config/mn10300/mn10300.md (cmpsi): Fix first alternative's
output template.
* MAINTAINERS: Added self.
From-SVN: r40956
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/config/mn10300/mn10300.md | 16 |
2 files changed, 19 insertions, 4 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index f9edd3d..cc07a8b 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2001-03-28 Matthew Hiller <hiller@redhat.com> + + * config/mn10300/mn10300.md (cmpsi): Fix first alternative's + output template. + + * MAINTAINERS: Added self. + 2001-03-28 Richard Henderson <rth@redhat.com> * Makefile.in (cs-tconfig.h): Depend on CONFIG_H, not GCONFIG_H. diff --git a/gcc/config/mn10300/mn10300.md b/gcc/config/mn10300/mn10300.md index 564a4c9..bf913b2 100644 --- a/gcc/config/mn10300/mn10300.md +++ b/gcc/config/mn10300/mn10300.md @@ -709,15 +709,23 @@ "* return output_tst (operands[0], insn);" [(set_attr "cc" "set_znv")]) +;; Ordinarily, the cmp instruction will set the Z bit of cc0 to 1 if +;; its operands hold equal values, but the operands of a cmp +;; instruction must be distinct registers. In the case where we'd +;; like to compare a register to itself, we can achieve this effect +;; with a btst 0,d0 instead. (This will not alter the contents of d0 +;; but will have the proper effect on cc0. Using d0 is arbitrary; any +;; data register would work.) + (define_insn "cmpsi" [(set (cc0) - (compare (match_operand:SI 0 "register_operand" "!*d*a*x,dax") - (match_operand:SI 1 "nonmemory_operand" "!*0,daxi")))] + (compare (match_operand:SI 0 "register_operand" "*d*a*x,dax") + (match_operand:SI 1 "nonmemory_operand" "*0,daxi")))] "" "@ - add 0,%0 + btst 0,d0 cmp %1,%0" - [(set_attr "cc" "invert,compare")]) + [(set_attr "cc" "compare,compare")]) ;; ---------------------------------------------------------------------- ;; ADD INSTRUCTIONS |