diff options
| author | Hans-Peter Nilsson <hp@axis.com> | 2020-01-31 16:03:15 +0100 |
|---|---|---|
| committer | Hans-Peter Nilsson <hp@axis.com> | 2020-05-09 04:12:03 +0200 |
| commit | e561b9fe0b4b3702e18b7bf12f03b1fbe0d111b4 (patch) | |
| tree | 2b35a8eeb1b11696e3d1c9fbba926f7ccb005422 /gcc/config | |
| parent | 61c964c7fd2ad96cec262a2bcd1fc13bd2e2eff8 (diff) | |
cris: Enable additions and subtractions to set condition codes.
Enabling dropping of compares with zero of the result, through
the non-VC-setting CCmode substitution. Beware that the
substitutions for 8- and 16-bit patterns will in some cases be
size-neutral; e.g. replacing an "addq 1..63,$rN" + "test.w $rN"
or "subq 1..63,$rN" + "test.w $rN" with an "add.w -63..63,$rN".
gcc:
* config/cris/cris.md ("*adddi3<setnz>"): Rename from "*adddi3".
cris: Enable 32-bit addition to set condition codes.
("*subdi3<setnz>"): Similarly from "*subdi3".
("*addsi3<setnz>"): Similarly from "*addsi3".
("*subsi3<setnz>"): Similarly from "*subsi3".
("*addhi3<setnz>"): Similarly from "*addhi3" and decorate the
"cc" attribute to "cc<ccnz>".
("*addqi3<setnz>"): Similarly from "*addqi3".
("*sub<mode>3<setnz>"): Similarly from "*sub<mode>3".
Diffstat (limited to 'gcc/config')
| -rw-r--r-- | gcc/config/cris/cris.md | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/gcc/config/cris/cris.md b/gcc/config/cris/cris.md index 2f3f328f5c5..8652f358630 100644 --- a/gcc/config/cris/cris.md +++ b/gcc/config/cris/cris.md @@ -913,7 +913,7 @@ "" "") -(define_insn "*adddi3" +(define_insn "*adddi3<setnz>" [(set (match_operand:DI 0 "register_operand" "=r,r,r,&r,&r") (plus:DI (match_operand:DI 1 "register_operand" "%0,0,0,0,r") (match_operand:DI 2 "general_operand" "J,N,P,g,!To"))) @@ -936,7 +936,7 @@ "" "") -(define_insn "*addsi3" +(define_insn "*addsi3<setnz>" [(set (match_operand:SI 0 "register_operand" "=r,r, r,r,r,r,r, r") (plus:SI (match_operand:SI 1 "register_operand" "%0,0, 0,0,0,0,r, r") @@ -989,7 +989,7 @@ } [(set_attr "slottable" "yes,yes,yes,yes,no,no,no,yes")]) -(define_insn "*addhi3" +(define_insn "*addhi3<setnz>" [(set (match_operand:HI 0 "register_operand" "=r,r, r,r,r,r") (plus:HI (match_operand:HI 1 "register_operand" "%0,0, 0,0,0,r") (match_operand:HI 2 "general_operand" "r,Q>,J,N,g,!To"))) @@ -1003,9 +1003,9 @@ add.w %2,%0 add.w %2,%1,%0" [(set_attr "slottable" "yes,yes,yes,yes,no,no") - (set_attr "cc" "normal,normal,clobber,clobber,normal,normal")]) + (set_attr "cc<ccnz>" "normal,normal,clobber,clobber,normal,normal")]) -(define_insn "*addqi3" +(define_insn "*addqi3<setnz>" [(set (match_operand:QI 0 "register_operand" "=r,r, r,r,r,r,r") (plus:QI (match_operand:QI 1 "register_operand" "%0,0, 0,0,0,0,r") (match_operand:QI 2 "general_operand" "r,Q>,J,N,O,g,!To"))) @@ -1020,7 +1020,7 @@ add.b %2,%0 add.b %2,%1,%0" [(set_attr "slottable" "yes,yes,yes,yes,yes,no,no") - (set_attr "cc" "normal,normal,clobber,clobber,clobber,normal,normal")]) + (set_attr "cc<ccnz>" "normal,normal,clobber,clobber,clobber,normal,normal")]) ;; Subtract. ;; @@ -1039,7 +1039,7 @@ "" "") -(define_insn "*subdi3" +(define_insn "*subdi3<setnz>" [(set (match_operand:DI 0 "register_operand" "=r,r,r,&r,&r") (minus:DI (match_operand:DI 1 "register_operand" "0,0,0,0,r") (match_operand:DI 2 "general_operand" "J,N,P,g,!To"))) @@ -1062,7 +1062,7 @@ "" "") -(define_insn "*subsi3" +(define_insn "*subsi3<setnz>" [(set (match_operand:SI 0 "register_operand" "=r,r, r,r,r,r,r,r") (minus:SI (match_operand:SI 1 "register_operand" "0,0, 0,0,0,0,0,r") @@ -1084,7 +1084,7 @@ sub.d %2,%1,%0" [(set_attr "slottable" "yes,yes,yes,yes,no,no,no,no")]) -(define_insn "*sub<mode>3" +(define_insn "*sub<mode>3<setnz>" [(set (match_operand:BW 0 "register_operand" "=r,r, r,r,r,r") (minus:BW (match_operand:BW 1 "register_operand" "0,0, 0,0,0,r") (match_operand:BW 2 "general_operand" "r,Q>,J,N,g,!To"))) @@ -1098,7 +1098,7 @@ sub<m> %2,%0 sub<m> %2,%1,%0" [(set_attr "slottable" "yes,yes,yes,yes,no,no") - (set_attr "cc" "normal,normal,clobber,clobber,normal,normal")]) + (set_attr "cc<ccnz>" "normal,normal,clobber,clobber,normal,normal")]) ;; This is the special case when we use what corresponds to the ;; instruction above in "casesi". Do *not* change it to use the generic |