re PR rtl-optimization/9888 (-mcpu=k6 -Os produces out of range loop instructions)
PR optimization/9888 Backport patch from mainline: 2002-07-03 Eric Botcazou <ebotcazou@multimania.com> Jeff Law <law@redhat.com> * i386.md (length_immediate attribute): Fix typo. (length_address attribute): Likewise. (modrm attribute): Set it to 0 for immediate call instructions. (jcc_1 pattern): Set modrm attribute to 0. (jcc_2 pattern ): Likewise. (jump pattern): Likewise. (doloop_end_internal pattern): Explicitly set length. (leave pattern): Fix typo. (leave_rex64 pattern): Likewise. From-SVN: r64035
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Eric Botcazou
Eric Botcazou
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cda7b37938
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cee7d07b45
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@ -1,3 +1,21 @@
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2003-03-09 Eric Botcazou <ebotcazou@libertysurf.fr>
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PR optimization/9888
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Backport patch from mainline:
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2002-07-03 Eric Botcazou <ebotcazou@multimania.com>
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Jeff Law <law@redhat.com>
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* i386.md (length_immediate attribute): Fix typo.
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(length_address attribute): Likewise.
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(modrm attribute): Set it to 0 for immediate call instructions.
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(jcc_1 pattern): Set modrm attribute to 0.
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(jcc_2 pattern ): Likewise.
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(jump pattern): Likewise.
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(doloop_end_internal pattern): Explicitly set length.
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(leave pattern): Fix typo.
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(leave_rex64 pattern): Likewise.
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2003-03-08 Eric Botcazou <ebotcazou@libertysurf.fr>
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PR middle-end/7796
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@ -131,7 +131,7 @@
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;; The (bounding maximum) length of an instruction immediate.
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(define_attr "length_immediate" ""
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(cond [(eq_attr "type" "incdec,setcc,icmov,ibr,str,cld,lea,other,multi,idiv,sse,mmx")
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(cond [(eq_attr "type" "incdec,setcc,icmov,str,cld,lea,other,multi,idiv,sse,mmx")
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(const_int 0)
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(eq_attr "i387" "1")
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(const_int 0)
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@ -162,7 +162,7 @@
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(cond [(eq_attr "type" "str,cld,other,multi,fxch")
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(const_int 0)
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(and (eq_attr "type" "call")
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(match_operand 1 "constant_call_address_operand" ""))
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(match_operand 0 "constant_call_address_operand" ""))
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(const_int 0)
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(and (eq_attr "type" "callv")
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(match_operand 1 "constant_call_address_operand" ""))
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@ -205,6 +205,12 @@
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(and (match_operand 0 "register_operand" "")
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(match_operand 1 "immediate_operand" "")))
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(const_int 0)
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(and (eq_attr "type" "call")
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(match_operand 0 "constant_call_address_operand" ""))
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(const_int 0)
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(and (eq_attr "type" "callv")
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(match_operand 1 "constant_call_address_operand" ""))
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(const_int 0)
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]
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(const_int 1)))
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@ -12961,6 +12967,7 @@
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""
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"%+j%C1\t%l0"
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[(set_attr "type" "ibr")
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(set_attr "modrm" "0")
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(set (attr "prefix_0f")
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(if_then_else (and (ge (minus (match_dup 0) (pc))
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(const_int -128))
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@ -12978,6 +12985,7 @@
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""
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"%+j%c1\t%l0"
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[(set_attr "type" "ibr")
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(set_attr "modrm" "0")
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(set (attr "prefix_0f")
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(if_then_else (and (ge (minus (match_dup 0) (pc))
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(const_int -128))
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@ -13244,7 +13252,8 @@
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(label_ref (match_operand 0 "" "")))]
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""
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"jmp\t%l0"
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[(set_attr "type" "ibr")])
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[(set_attr "type" "ibr")
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(set_attr "modrm" "0")])
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(define_expand "indirect_jump"
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[(set (pc) (match_operand 0 "nonimmediate_operand" "rm"))]
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@ -13357,6 +13366,14 @@
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return "dec{l}\t%1\;%+jne\t%l0";
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}
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[(set_attr "ppro_uops" "many")
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(set (attr "length")
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(if_then_else (and (eq_attr "alternative" "0")
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(and (ge (minus (match_dup 0) (pc))
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(const_int -128))
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(lt (minus (match_dup 0) (pc))
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(const_int 124))))
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(const_int 2)
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(const_int 16)))
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(set (attr "type")
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(if_then_else (and (eq_attr "alternative" "0")
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(and (ge (minus (match_dup 0) (pc))
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@ -13879,7 +13896,6 @@
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[(set_attr "length_immediate" "0")
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(set_attr "length" "1")
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(set_attr "modrm" "0")
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(set_attr "modrm" "0")
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(set_attr "athlon_decode" "vector")
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(set_attr "ppro_uops" "few")])
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@ -13892,7 +13908,6 @@
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[(set_attr "length_immediate" "0")
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(set_attr "length" "1")
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(set_attr "modrm" "0")
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(set_attr "modrm" "0")
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(set_attr "athlon_decode" "vector")
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(set_attr "ppro_uops" "few")])
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@ -1,3 +1,7 @@
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2003-03-09 Eric Botcazou <ebotcazou@libertysurf.fr>
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* gcc.dg/i386-loop-1.c: New test.
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2003-03-08 Hans-Peter Nilsson <hp@bitrange.com>
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* gcc.dg/old-style-asm-1.c: Tweak to match mmix-knuth-mmixware.
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@ -1,6 +1,6 @@
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/* PR optimization/9888 */
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/* { dg-do run { target i?86-*-* } } */
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/* { dg-options "-mtune=k6 -O3" } */
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/* { dg-options "-mcpu=k6 -O3" } */
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/* Verify that GCC doesn't emit out of range 'loop' instructions. */
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