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| author | Richard Kenner <kenner@gcc.gnu.org> | 1994-07-12 12:19:40 -0400 |
|---|---|---|
| committer | Richard Kenner <kenner@gcc.gnu.org> | 1994-07-12 12:19:40 -0400 |
| commit | db19fab5ec790d202f7a7ed827047f845f884a20 (patch) | |
| tree | 6e93cb0b2eb670a3472510442274294f5f190b01 /gcc | |
| parent | ee59bdfc51d6ebb0f1829abe739c69873210d6d5 (diff) | |
| download | gcc-db19fab5ec790d202f7a7ed827047f845f884a20.zip gcc-db19fab5ec790d202f7a7ed827047f845f884a20.tar.gz gcc-db19fab5ec790d202f7a7ed827047f845f884a20.tar.bz2 | |
(ashldi3): Update pattern for (sign_extend (ashift ..)) to match the
current canonicalization.
From-SVN: r7743
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/config/alpha/alpha.md | 25 |
1 files changed, 9 insertions, 16 deletions
diff --git a/gcc/config/alpha/alpha.md b/gcc/config/alpha/alpha.md index 07b7dd3..fc9a5b8 100644 --- a/gcc/config/alpha/alpha.md +++ b/gcc/config/alpha/alpha.md @@ -785,26 +785,19 @@ }" [(set_attr "type" "iaddlog,shiftcm")]) -;; This is the same as (sign_extend (shift X [123])). (define_insn "" [(set (match_operand:DI 0 "register_operand" "=r") - (ashiftrt:DI (ashift:DI (match_operand:DI 1 "reg_or_0_operand" "rJ") - (match_operand:DI 2 "const_int_operand" "i")) - (const_int 32)))] - "INTVAL (operands[2]) >= 33 && INTVAL (operands[2]) <= 35" + (sign_extend:DI + (subreg:SI (ashift:DI (match_operand:DI 1 "reg_or_0_operand" "rJ") + (match_operand:DI 2 "const_int_operand" "P")) + 0)))] + "INTVAL (operands[2]) >= 1 && INTVAL (operands[2]) <= 3" "* { - switch (INTVAL (operands[2])) - { - case 33: - return \"addl %r1,%r1,%0\"; - case 34: - return \"s4addl %r1,0,%0\"; - case 35: - return \"s8addl %r1,0,%0\"; - default: - abort (); - } + if (operands[2] == const1_rtx) + return \"addl %r1,%r1,%0\"; + else + return \"s%P2addl %r1,0,%0\"; }" [(set_attr "type" "iaddlog")]) |