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| author | Richard Kenner <kenner@gcc.gnu.org> | 1992-09-19 15:42:00 -0400 |
|---|---|---|
| committer | Richard Kenner <kenner@gcc.gnu.org> | 1992-09-19 15:42:00 -0400 |
| commit | 95ac8e67bcb7a8a4454c7cf2e48ee1cbd639992b (patch) | |
| tree | 9fdb998d89f3b2fe518746ed42e687c065564da8 /gcc | |
| parent | df3d94ed38439480dca837415ccd2181d982a23c (diff) | |
| download | gcc-95ac8e67bcb7a8a4454c7cf2e48ee1cbd639992b.zip gcc-95ac8e67bcb7a8a4454c7cf2e48ee1cbd639992b.tar.gz gcc-95ac8e67bcb7a8a4454c7cf2e48ee1cbd639992b.tar.bz2 | |
(smax, smin, umax, umin): Add define_splits.
From-SVN: r2169
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/config/rs6000/rs6000.md | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/gcc/config/rs6000/rs6000.md b/gcc/config/rs6000/rs6000.md index 90947d1..9da114a 100644 --- a/gcc/config/rs6000/rs6000.md +++ b/gcc/config/rs6000/rs6000.md @@ -271,7 +271,8 @@ ;; For SMIN, SMAX, UMIN, and UMAX, we use DEFINE_EXPAND's that involve a doz[i] ;; instruction and some auxiliary computations. Then we just have a single -;; DEFINE_INSN for doz[i]. +;; DEFINE_INSN for doz[i] and the define_splits to make them if made by +;; combine. (define_expand "sminsi3" [(set (match_dup 3) @@ -285,6 +286,19 @@ " { operands[3] = gen_reg_rtx (SImode); }") +(define_split + [(set (match_operand:SI 0 "gpc_reg_operand" "") + (smin:SI (match_operand:SI 1 "gpc_reg_operand" "") + (match_operand:SI 2 "reg_or_short_operand" ""))) + (clobber (match_operand:SI 3 "gpc_reg_operand" ""))] + "" + [(set (match_dup 3) + (if_then_else:SI (gt:SI (match_dup 1) (match_dup 2)) + (const_int 0) + (minus:SI (match_dup 2) (match_dup 1)))) + (set (match_dup 0) (minus:SI (match_dup 2) (match_dup 3)))] + "") + (define_expand "smaxsi3" [(set (match_dup 3) (if_then_else:SI (gt:SI (match_operand:SI 1 "gpc_reg_operand" "") @@ -297,6 +311,19 @@ " { operands[3] = gen_reg_rtx (SImode); }") +(define_split + [(set (match_operand:SI 0 "gpc_reg_operand" "") + (smax:SI (match_operand:SI 1 "gpc_reg_operand" "") + (match_operand:SI 2 "reg_or_short_operand" ""))) + (clobber (match_operand:SI 3 "gpc_reg_operand" ""))] + "" + [(set (match_dup 3) + (if_then_else:SI (gt:SI (match_dup 1) (match_dup 2)) + (const_int 0) + (minus:SI (match_dup 2) (match_dup 1)))) + (set (match_dup 0) (plus:SI (match_dup 3) (match_dup 1)))] + "") + (define_expand "uminsi3" [(set (match_dup 3) (xor:SI (match_operand:SI 1 "gpc_reg_operand" "") (const_int -2147483648))) |