diff options
Diffstat (limited to 'gcc-4.9/gcc/config/rs6000/altivec.md')
| -rw-r--r-- | gcc-4.9/gcc/config/rs6000/altivec.md | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/config/rs6000/altivec.md b/gcc-4.9/gcc/config/rs6000/altivec.md index 674cb40bf..a8cfcb739 100644 --- a/gcc-4.9/gcc/config/rs6000/altivec.md +++ b/gcc-4.9/gcc/config/rs6000/altivec.md @@ -143,6 +143,9 @@ UNSPEC_VSUBEUQM UNSPEC_VSUBECUQ UNSPEC_VBPERMQ + UNSPEC_BCDADD + UNSPEC_BCDSUB + UNSPEC_BCD_OVERFLOW ]) (define_c_enum "unspecv" @@ -3334,3 +3337,112 @@ "vbpermq %0,%1,%2" [(set_attr "length" "4") (set_attr "type" "vecsimple")]) + +;; Decimal Integer operations +(define_int_iterator UNSPEC_BCD_ADD_SUB [UNSPEC_BCDADD UNSPEC_BCDSUB]) + +(define_int_attr bcd_add_sub [(UNSPEC_BCDADD "add") + (UNSPEC_BCDSUB "sub")]) + +(define_code_iterator BCD_TEST [eq lt gt unordered]) + +(define_insn "bcd<bcd_add_sub>" + [(set (match_operand:V1TI 0 "register_operand" "") + (unspec:V1TI [(match_operand:V1TI 1 "register_operand" "") + (match_operand:V1TI 2 "register_operand" "") + (match_operand:QI 3 "const_0_to_1_operand" "")] + UNSPEC_BCD_ADD_SUB)) + (clobber (reg:CCFP 74))] + "TARGET_P8_VECTOR" + "bcd<bcd_add_sub>. %0,%1,%2,%3" + [(set_attr "length" "4") + (set_attr "type" "vecsimple")]) + +;; Use a floating point type (V2DFmode) for the compare to set CR6 so that we +;; can use the unordered test for BCD nans and add/subtracts that overflow. An +;; UNORDERED test on an integer type (like V1TImode) is not defined. The type +;; probably should be one that can go in the VMX (Altivec) registers, so we +;; can't use DDmode or DFmode. +(define_insn "*bcd<bcd_add_sub>_test" + [(set (reg:CCFP 74) + (compare:CCFP + (unspec:V2DF [(match_operand:V1TI 1 "register_operand" "v") + (match_operand:V1TI 2 "register_operand" "v") + (match_operand:QI 3 "const_0_to_1_operand" "i")] + UNSPEC_BCD_ADD_SUB) + (match_operand:V2DF 4 "zero_constant" "j"))) + (clobber (match_scratch:V1TI 0 "=v"))] + "TARGET_P8_VECTOR" + "bcd<bcd_add_sub>. %0,%1,%2,%3" + [(set_attr "length" "4") + (set_attr "type" "vecsimple")]) + +(define_insn "*bcd<bcd_add_sub>_test2" + [(set (match_operand:V1TI 0 "register_operand" "=v") + (unspec:V1TI [(match_operand:V1TI 1 "register_operand" "v") + (match_operand:V1TI 2 "register_operand" "v") + (match_operand:QI 3 "const_0_to_1_operand" "i")] + UNSPEC_BCD_ADD_SUB)) + (set (reg:CCFP 74) + (compare:CCFP + (unspec:V2DF [(match_dup 1) + (match_dup 2) + (match_dup 3)] + UNSPEC_BCD_ADD_SUB) + (match_operand:V2DF 4 "zero_constant" "j")))] + "TARGET_P8_VECTOR" + "bcd<bcd_add_sub>. %0,%1,%2,%3" + [(set_attr "length" "4") + (set_attr "type" "vecsimple")]) + +(define_expand "bcd<bcd_add_sub>_<code>" + [(parallel [(set (reg:CCFP 74) + (compare:CCFP + (unspec:V2DF [(match_operand:V1TI 1 "register_operand" "") + (match_operand:V1TI 2 "register_operand" "") + (match_operand:QI 3 "const_0_to_1_operand" "")] + UNSPEC_BCD_ADD_SUB) + (match_dup 4))) + (clobber (match_scratch:V1TI 5 ""))]) + (set (match_operand:SI 0 "register_operand" "") + (BCD_TEST:SI (reg:CCFP 74) + (const_int 0)))] + "TARGET_P8_VECTOR" +{ + operands[4] = CONST0_RTX (V2DFmode); +}) + +;; Peephole2 pattern to combine a bcdadd/bcdsub that calculates the value and +;; the bcdadd/bcdsub that tests the value. The combiner won't work since +;; CR6 is a hard coded register. Unfortunately, all of the Altivec predicate +;; support is hard coded to use the fixed register CR6 instead of creating +;; a register class for CR6. + +(define_peephole2 + [(parallel [(set (match_operand:V1TI 0 "register_operand" "") + (unspec:V1TI [(match_operand:V1TI 1 "register_operand" "") + (match_operand:V1TI 2 "register_operand" "") + (match_operand:QI 3 "const_0_to_1_operand" "")] + UNSPEC_BCD_ADD_SUB)) + (clobber (reg:CCFP 74))]) + (parallel [(set (reg:CCFP 74) + (compare:CCFP + (unspec:V2DF [(match_dup 1) + (match_dup 2) + (match_dup 3)] + UNSPEC_BCD_ADD_SUB) + (match_operand:V2DF 4 "zero_constant" ""))) + (clobber (match_operand:V1TI 5 "register_operand" ""))])] + "TARGET_P8_VECTOR" + [(parallel [(set (match_dup 0) + (unspec:V1TI [(match_dup 1) + (match_dup 2) + (match_dup 3)] + UNSPEC_BCD_ADD_SUB)) + (set (reg:CCFP 74) + (compare:CCFP + (unspec:V2DF [(match_dup 1) + (match_dup 2) + (match_dup 3)] + UNSPEC_BCD_ADD_SUB) + (match_dup 4)))])]) |