diff options
author | meissner <meissner@138bc75d-0d04-0410-961f-82ee72b054a4> | 2019-10-16 06:06:36 +0000 |
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committer | meissner <meissner@138bc75d-0d04-0410-961f-82ee72b054a4> | 2019-10-16 06:06:36 +0000 |
commit | 20439f1fa0ae977961abce66f390037a71306992 (patch) | |
tree | 11f0bc67e809e30f5dbb25d5e431f3ed3c82c09a | |
parent | 4a71634e97b1fdfe2455d8220bef98a62b061593 (diff) |
Rework patch #4ibm/pcrel-trunk
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/ibm/pcrel-trunk@277053 138bc75d-0d04-0410-961f-82ee72b054a4
-rw-r--r-- | gcc/config/rs6000/rs6000.md | 80 |
1 files changed, 74 insertions, 6 deletions
diff --git a/gcc/config/rs6000/rs6000.md b/gcc/config/rs6000/rs6000.md index f651798ff39..c6bba632a7d 100644 --- a/gcc/config/rs6000/rs6000.md +++ b/gcc/config/rs6000/rs6000.md @@ -11559,14 +11559,44 @@ [(set_attr "type" "three") (set_attr "length" "12")]) +;; We can't use the prefixed attribute here because there are two memory +;; instructions. We can't split the insn due to the fact that this operation +;; needs to be done in one piece. (define_insn "stack_protect_setdi" [(set (match_operand:DI 0 "memory_operand" "=Y") (unspec:DI [(match_operand:DI 1 "memory_operand" "Y")] UNSPEC_SP_SET)) (set (match_scratch:DI 2 "=&r") (const_int 0))] "TARGET_64BIT" - "ld%U1%X1 %2,%1\;std%U0%X0 %2,%0\;li %2,0" +{ + if (prefixed_memory (operands[1], DImode)) + output_asm_insn ("pld %2,%1", operands); + else + output_asm_insn ("ld%U1%X1 %2,%1", operands); + + if (prefixed_memory (operands[0], DImode)) + output_asm_insn ("pstd %2,%0", operands); + else + output_asm_insn ("std%U0%X0 %2,%0", operands); + + return "li %2,0"; +} [(set_attr "type" "three") - (set_attr "length" "12")]) + + ;; Back to back prefixed memory instructions take 20 bytes (8 bytes for each + ;; prefixed instruction + 4 bytes for the possible NOP). Add in 4 bytes for + ;; the LI 0 at the end. + (set_attr "prefixed" "no") + (set_attr "num_insns" "3") + (set (attr "length") + (cond [(and (match_operand 0 "prefixed_memory") + (match_operand 1 "prefixed_memory")) + (const_string "24") + + (ior (match_operand 0 "prefixed_memory") + (match_operand 1 "prefixed_memory")) + (const_string "20")] + + (const_string "12")))]) (define_expand "stack_protect_test" [(match_operand 0 "memory_operand") @@ -11605,6 +11635,9 @@ lwz%U1%X1 %3,%1\;lwz%U2%X2 %4,%2\;cmplw %0,%3,%4\;li %3,0\;li %4,0" [(set_attr "length" "16,20")]) +;; We can't use the prefixed attribute here because there are two memory +;; instructions. We can't split the insn due to the fact that this operation +;; needs to be done in one piece. (define_insn "stack_protect_testdi" [(set (match_operand:CCEQ 0 "cc_reg_operand" "=x,?y") (unspec:CCEQ [(match_operand:DI 1 "memory_operand" "Y,Y") @@ -11613,10 +11646,45 @@ (set (match_scratch:DI 4 "=r,r") (const_int 0)) (clobber (match_scratch:DI 3 "=&r,&r"))] "TARGET_64BIT" - "@ - ld%U1%X1 %3,%1\;ld%U2%X2 %4,%2\;xor. %3,%3,%4\;li %4,0 - ld%U1%X1 %3,%1\;ld%U2%X2 %4,%2\;cmpld %0,%3,%4\;li %3,0\;li %4,0" - [(set_attr "length" "16,20")]) +{ + if (prefixed_memory (operands[1], DImode)) + output_asm_insn ("pld %3,%1", operands); + else + output_asm_insn ("ld%U1%X1 %3,%1", operands); + + if (prefixed_memory (operands[2], DImode)) + output_asm_insn ("pld %4,%2", operands); + else + output_asm_insn ("ld%U2%X2 %4,%2", operands); + + if (which_alternative == 0) + output_asm_insn ("xor. %3,%3,%4", operands); + else + output_asm_insn ("cmpld %0,%3,%4\;li %3,0", operands); + + return "li %4,0"; +} + ;; Back to back prefixed memory instructions take 20 bytes (8 bytes for each + ;; prefixed instruction + 4 bytes for the possible NOP). Add in either 4 or + ;; 8 bytes to do the test. + [(set_attr "prefixed" "no") + (set_attr "num_insns" "4,5") + (set (attr "length") + (cond [(and (match_operand 1 "prefixed_memory") + (match_operand 2 "prefixed_memory")) + (if_then_else (eq_attr "alternative" "0") + (const_string "28") + (const_string "32")) + + (ior (match_operand 1 "prefixed_memory") + (match_operand 2 "prefixed_memory")) + (if_then_else (eq_attr "alternative" "0") + (const_string "20") + (const_string "24"))] + + (if_then_else (eq_attr "alternative" "0") + (const_string "16") + (const_string "20"))))]) ;; Here are the actual compare insns. |