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| author | Jim Wilson <wilson@gcc.gnu.org> | 1997-04-14 14:57:14 -0700 |
|---|---|---|
| committer | Jim Wilson <wilson@gcc.gnu.org> | 1997-04-14 14:57:14 -0700 |
| commit | 977eef43d8891a481186c971a46cec0c619c8e2d (patch) | |
| tree | 1f1db43e6e37c3b0ab98b2105f9451357a06c5c6 | |
| parent | 460f4b9dddad212b224cca2516c7116406910650 (diff) | |
| download | gcc-977eef43d8891a481186c971a46cec0c619c8e2d.zip gcc-977eef43d8891a481186c971a46cec0c619c8e2d.tar.gz gcc-977eef43d8891a481186c971a46cec0c619c8e2d.tar.bz2 | |
(xtrct_left, xtrct_right): New patterns.
From-SVN: r13904
| -rw-r--r-- | gcc/config/sh/sh.md | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/gcc/config/sh/sh.md b/gcc/config/sh/sh.md index 342b3e4..e5ee868 100644 --- a/gcc/config/sh/sh.md +++ b/gcc/config/sh/sh.md @@ -1296,6 +1296,26 @@ (const_string "14"))) (set_attr "type" "arith")]) +;; These patterns are found in expansions of DImode shifts by 16, and +;; allow the xtrct instruction to be generated from C source. + +(define_insn "xtrct_left" + [(set (match_operand:SI 0 "arith_reg_operand" "=r") + (ior:SI (ashift:SI (match_operand:SI 1 "arith_reg_operand" "r") + (const_int 16)) + (lshiftrt:SI (match_operand:SI 2 "arith_reg_operand" "0") + (const_int 16))))] + "" + "xtrct %1,%0") + +(define_insn "xtrct_right" + [(set (match_operand:SI 0 "arith_reg_operand" "=r") + (ior:SI (lshiftrt:SI (match_operand:SI 1 "arith_reg_operand" "0") + (const_int 16)) + (ashift:SI (match_operand:SI 2 "arith_reg_operand" "r") + (const_int 16))))] + "" + "xtrct %2,%0") ;; ------------------------------------------------------------------------- ;; Unary arithmetic |