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compiler.cfg: Reading the return value of a float-returning function on x86-32 had a side effect of popping the x87 stack, so it was not correct for DCE to just eliminate this if the return value was not used. Fix this by adding a new dead-outputs slot to alien-call-insns and having DCE move dead returns there

db4
Slava Pestov 2010-08-13 23:19:30 -07:00
parent 7384793287
commit b5fc39c198
10 changed files with 50 additions and 36 deletions

16
basis/compiler/cfg/alias-analysis/alias-analysis-tests.factor
View File

@ -294,14 +294,14 @@ IN: compiler.cfg.alias-analysis.tests
V{
T{ ##peek f 0 D 0 }
T{ ##slot-imm f 1 0 1 0 }
T{ ##alien-invoke f { } { } { } 0 0 "free" }
T{ ##alien-invoke f { } { } { } { } 0 0 "free" }
T{ ##slot-imm f 2 0 1 0 }
}
] [
V{
T{ ##peek f 0 D 0 }
T{ ##slot-imm f 1 0 1 0 }
T{ ##alien-invoke f { } { } { } 0 0 "free" }
T{ ##alien-invoke f { } { } { } { } 0 0 "free" }
T{ ##slot-imm f 2 0 1 0 }
} test-alias-analysis
] unit-test
@ -311,7 +311,7 @@ IN: compiler.cfg.alias-analysis.tests
T{ ##peek f 0 D 0 }
T{ ##peek f 1 D 1 }
T{ ##set-slot-imm f 1 0 1 0 }
T{ ##alien-invoke f { } { } { } 0 0 "free" }
T{ ##alien-invoke f { } { } { } { } 0 0 "free" }
T{ ##slot-imm f 2 0 1 0 }
}
] [
@ -319,7 +319,7 @@ IN: compiler.cfg.alias-analysis.tests
T{ ##peek f 0 D 0 }
T{ ##peek f 1 D 1 }
T{ ##set-slot-imm f 1 0 1 0 }
T{ ##alien-invoke f { } { } { } 0 0 "free" }
T{ ##alien-invoke f { } { } { } { } 0 0 "free" }
T{ ##slot-imm f 2 0 1 0 }
} test-alias-analysis
] unit-test
@ -330,7 +330,7 @@ IN: compiler.cfg.alias-analysis.tests
T{ ##peek f 1 D 1 }
T{ ##peek f 2 D 2 }
T{ ##set-slot-imm f 1 0 1 0 }
T{ ##alien-invoke f { } { } { } 0 0 "free" }
T{ ##alien-invoke f { } { } { } { } 0 0 "free" }
T{ ##set-slot-imm f 2 0 1 0 }
}
] [
@ -339,7 +339,7 @@ IN: compiler.cfg.alias-analysis.tests
T{ ##peek f 1 D 1 }
T{ ##peek f 2 D 2 }
T{ ##set-slot-imm f 1 0 1 0 }
T{ ##alien-invoke f { } { } { } 0 0 "free" }
T{ ##alien-invoke f { } { } { } { } 0 0 "free" }
T{ ##set-slot-imm f 2 0 1 0 }
} test-alias-analysis
] unit-test
@ -348,14 +348,14 @@ IN: compiler.cfg.alias-analysis.tests
V{
T{ ##peek f 0 D 0 }
T{ ##slot-imm f 1 0 1 0 }
T{ ##alien-invoke f { } { } { } 0 0 "free" }
T{ ##alien-invoke f { } { } { } { } 0 0 "free" }
T{ ##set-slot-imm f 1 0 1 0 }
}
] [
V{
T{ ##peek f 0 D 0 }
T{ ##slot-imm f 1 0 1 0 }
T{ ##alien-invoke f { } { } { } 0 0 "free" }
T{ ##alien-invoke f { } { } { } { } 0 0 "free" }
T{ ##set-slot-imm f 1 0 1 0 }
} test-alias-analysis
] unit-test

4
basis/compiler/cfg/builder/alien/alien.factor
View File

@ -54,8 +54,8 @@ IN: compiler.cfg.builder.alien
(caller-parameters)
] with-param-regs* ;
: prepare-caller-return ( params -- reg-outputs )
return>> [ { } ] [ base-type load-return ] if-void ;
: prepare-caller-return ( params -- reg-outputs dead-outputs )
return>> [ { } ] [ base-type load-return ] if-void { } ;
: caller-stack-frame ( params -- cleanup stack-size )
[ stack-params get ] dip [ return>> ] [ abi>> ] bi stack-cleanup

15
basis/compiler/cfg/dce/dce.factor
View File

@ -1,6 +1,6 @@
! Copyright (C) 2008, 2009 Slava Pestov, Daniel Ehrenberg.
! Copyright (C) 2008, 2010 Slava Pestov, Daniel Ehrenberg.
! See http://factorcode.org/license.txt for BSD license.
USING: accessors assocs kernel namespaces sequences
USING: accessors arrays assocs kernel namespaces sequences
compiler.cfg.instructions compiler.cfg.def-use
compiler.cfg.rpo compiler.cfg.predecessors hash-sets sets ;
FROM: namespaces => set ;
@ -99,16 +99,17 @@ M: ##write-barrier live-insn? src>> live-vreg? ;
M: ##write-barrier-imm live-insn? src>> live-vreg? ;
: filter-alien-outputs ( triples -- triples' )
[ first live-vreg? ] filter ;
: filter-alien-outputs ( outputs -- live-outputs dead-outputs )
[ first live-vreg? ] partition
[ first3 2array nip ] map ;
M: alien-call-insn live-insn?
[ filter-alien-outputs ] change-reg-outputs
dup reg-outputs>> filter-alien-outputs [ >>reg-outputs ] [ >>dead-outputs ] bi*
drop t ;
M: ##callback-inputs live-insn?
[ filter-alien-outputs ] change-reg-outputs
[ filter-alien-outputs ] change-stack-outputs
[ filter-alien-outputs drop ] change-reg-outputs
[ filter-alien-outputs drop ] change-stack-outputs
drop t ;
M: flushable-insn live-insn? defs-vregs [ live-vreg? ] any? ;

12
basis/compiler/cfg/gc-checks/gc-checks-tests.factor
View File

@ -277,7 +277,7 @@ V{
} 0 test-bb
V{
T{ ##alien-invoke f "malloc" f T{ gc-map } }
T{ ##alien-invoke f "malloc" f f f f f T{ gc-map } }
T{ ##allot f 1 64 byte-array }
T{ ##branch }
} 1 test-bb
@ -299,7 +299,7 @@ V{
! The GC check should come after the alien-invoke
[
V{
T{ ##alien-invoke f "malloc" f T{ gc-map } }
T{ ##alien-invoke f "malloc" f f f f f T{ gc-map } }
T{ ##check-nursery-branch f 64 cc<= 3 4 }
}
] [ 0 get successors>> first instructions>> ] unit-test
@ -311,9 +311,9 @@ V{
} 0 test-bb
V{
T{ ##alien-invoke f "malloc" f T{ gc-map } }
T{ ##alien-invoke f "malloc" f f f f f T{ gc-map } }
T{ ##allot f 1 64 byte-array }
T{ ##alien-invoke f "malloc" f T{ gc-map } }
T{ ##alien-invoke f "malloc" f f f f f T{ gc-map } }
T{ ##allot f 2 64 byte-array }
T{ ##branch }
} 1 test-bb
@ -334,7 +334,7 @@ V{
[
V{
T{ ##alien-invoke f "malloc" f T{ gc-map } }
T{ ##alien-invoke f "malloc" f f f f f T{ gc-map } }
T{ ##check-nursery-branch f 64 cc<= 3 4 }
}
] [
@ -346,7 +346,7 @@ V{
[
V{
T{ ##allot f 1 64 byte-array }
T{ ##alien-invoke f "malloc" f T{ gc-map } }
T{ ##alien-invoke f "malloc" f f f f f T{ gc-map } }
T{ ##check-nursery-branch f 64 cc<= 5 6 }
}
] [

6
basis/compiler/cfg/instructions/instructions.factor
View File

@ -673,14 +673,14 @@ literal: boxer gc-map ;
! { vreg rep stack#/reg }
VREG-INSN: ##alien-invoke
literal: reg-inputs stack-inputs reg-outputs cleanup stack-size symbols dll gc-map ;
literal: reg-inputs stack-inputs reg-outputs dead-outputs cleanup stack-size symbols dll gc-map ;
VREG-INSN: ##alien-indirect
use: src/int-rep
literal: reg-inputs stack-inputs reg-outputs cleanup stack-size gc-map ;
literal: reg-inputs stack-inputs reg-outputs dead-outputs cleanup stack-size gc-map ;
VREG-INSN: ##alien-assembly
literal: reg-inputs stack-inputs reg-outputs cleanup stack-size quot gc-map ;
literal: reg-inputs stack-inputs reg-outputs dead-outputs cleanup stack-size quot gc-map ;
VREG-INSN: ##callback-inputs
literal: reg-outputs stack-outputs ;

2
basis/compiler/cfg/liveness/liveness-tests.factor
View File

@ -127,7 +127,7 @@ V{
T{ ##unbox f 37 29 "alien_offset" int-rep }
T{ ##unbox f 38 28 "to_double" double-rep }
T{ ##unbox f 39 36 "to_cell" int-rep }
T{ ##alien-invoke f V{ } V{ { 37 int-rep 0 } { 38 double-rep 4 } { 39 int-rep 12 } } { { 40 int-rep EAX } } 0 16 "CFRunLoopRunInMode" f T{ gc-map } }
T{ ##alien-invoke f V{ } V{ { 37 int-rep 0 } { 38 double-rep 4 } { 39 int-rep 12 } } { { 40 int-rep EAX } } { } 0 16 "CFRunLoopRunInMode" f T{ gc-map } }
T{ ##box f 41 40 "from_signed_cell" int-rep T{ gc-map } }
T{ ##replace f 41 D 0 }
T{ ##branch }

6
basis/cpu/architecture/architecture.factor
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@ -602,11 +602,11 @@ HOOK: %save-context cpu ( temp1 temp2 -- )
HOOK: %c-invoke cpu ( symbols dll gc-map -- )
HOOK: %alien-invoke cpu ( reg-inputs stack-inputs reg-outputs cleanup stack-size symbols dll gc-map -- )
HOOK: %alien-invoke cpu ( reg-inputs stack-inputs reg-outputs dead-outputs cleanup stack-size symbols dll gc-map -- )
HOOK: %alien-indirect cpu ( src reg-inputs stack-inputs reg-outputs cleanup stack-size gc-map -- )
HOOK: %alien-indirect cpu ( src reg-inputs stack-inputs reg-outputs dead-outputs cleanup stack-size gc-map -- )
HOOK: %alien-assembly cpu ( reg-inputs stack-inputs reg-outputs cleanup stack-size quot gc-map -- )
HOOK: %alien-assembly cpu ( reg-inputs stack-inputs reg-outputs dead-outputs cleanup stack-size quot gc-map -- )
HOOK: %callback-inputs cpu ( reg-outputs stack-outputs -- )

7
basis/cpu/x86/32/32.factor
View File

@ -148,6 +148,13 @@ M: x86.32 %store-reg-param ( vreg rep reg -- )
{ double-rep [ drop \ FLDL double-rep store-float-return ] }
} case ;
M: x86.32 %discard-reg-param ( rep reg -- )
drop {
{ int-rep [ ] }
{ float-rep [ ST0 FSTP ] }
{ double-rep [ ST0 FSTP ] }
} case ;
:: call-unbox-func ( src func -- )
EAX src tagged-rep %copy
4 save-vm-ptr

3
basis/cpu/x86/64/64.factor
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@ -95,6 +95,9 @@ M:: x86.64 %load-reg-param ( vreg rep reg -- )
M:: x86.64 %store-reg-param ( vreg rep reg -- )
reg vreg rep %copy ;
M: x86.32 %discard-reg-param ( rep reg -- )
2drop ;
M:: x86.64 %unbox ( dst src func rep -- )
param-reg-0 src tagged-rep %copy
param-reg-1 %mov-vm-ptr

15
basis/cpu/x86/x86.factor
View File

@ -631,6 +631,8 @@ HOOK: %load-reg-param cpu ( vreg rep reg -- )
HOOK: %store-reg-param cpu ( vreg rep reg -- )
HOOK: %discard-reg-param cpu ( rep reg -- )
: %load-return ( dst rep -- )
dup return-reg %load-reg-param ;
@ -641,24 +643,25 @@ HOOK: %prepare-var-args cpu ( -- )
HOOK: %cleanup cpu ( n -- )
:: emit-alien-insn ( reg-inputs stack-inputs reg-outputs cleanup stack-size quot -- )
:: emit-alien-insn ( reg-inputs stack-inputs reg-outputs dead-outputs cleanup stack-size quot -- )
stack-inputs [ first3 %store-stack-param ] each
reg-inputs [ first3 %store-reg-param ] each
%prepare-var-args
quot call
cleanup %cleanup
reg-outputs [ first3 %load-reg-param ] each ; inline
reg-outputs [ first3 %load-reg-param ] each
dead-outputs [ first2 %discard-reg-param ] each ; inline
M: x86 %alien-invoke ( reg-inputs stack-inputs reg-outputs cleanup stack-size symbols dll gc-map -- )
M: x86 %alien-invoke ( reg-inputs stack-inputs reg-outputs dead-outputs cleanup stack-size symbols dll gc-map -- )
'[ _ _ _ %c-invoke ] emit-alien-insn ;
M:: x86 %alien-indirect ( src reg-inputs stack-inputs reg-outputs cleanup stack-size gc-map -- )
reg-inputs stack-inputs reg-outputs cleanup stack-size [
M:: x86 %alien-indirect ( src reg-inputs stack-inputs reg-outputs dead-outputs cleanup stack-size gc-map -- )
reg-inputs stack-inputs reg-outputs dead-outputs cleanup stack-size [
src ?spill-slot CALL
gc-map gc-map-here
] emit-alien-insn ;
M: x86 %alien-assembly ( reg-inputs stack-inputs reg-outputs cleanup stack-size quot gc-map -- )
M: x86 %alien-assembly ( reg-inputs stack-inputs reg-outputs dead-outputs cleanup stack-size quot gc-map -- )
'[ _ _ gc-map set call( -- ) ] emit-alien-insn ;
HOOK: %begin-callback cpu ( -- )