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[Tolk] Change order of assignment evaluation, lhs first

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In FunC (and in Tolk before), the assignment
> lhs = rhs
evaluation order (at IR level) was "rhs first, lhs second".
In practice, this did not matter, because lhs could only
be a primitive:
> (v1, v2) = getValue()
Left side of assignment actually has no "evaluation".
Since Tolk implemented indexed access, there could be
> getTensor().0 = getValue()
or (in the future)
> getObject().field = getValue()
where evaluation order becomes significant.

Now evaluation order will be to "lhs first, rhs second"
(more expected from user's point of view), which will become
significant when building control flow graph.
This commit is contained in:
tolk-vm 2025-02-10 12:57:25 +04:00
parent 2a68c8610b
commit 1389ff6789
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GPG key ID: 7905DD7FE0324B12
20 changed files with 602 additions and 456 deletions
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84
tolk-tester/tests/indexed-access.tolk
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@ -21,6 +21,26 @@ fun plus(mutate self: int, y: int): int {
fun eq<X>(v: X): X { return v; }
global gTup: [int];
global gTens: (int, int);
@method_id(100)
fun testCodegenSimple() {
var t1 = [1];
t1.0 = 2;
debugPrintString("");
var t2 = [[1]];
t2.0.0 = 2;
debugPrintString("");
gTup = [1];
gTup.0 = 2;
debugPrintString("");
gTens = (1,2);
gTens.1 = 4;
debugPrintString("");
return (t1, t2, gTup, gTens);
}
@method_id(101)
fun test101() {
var t = (1, (2, 3), [4, 5, [6, 7]], 8);
@ -241,30 +261,60 @@ fun main(){}
@fif_codegen
"""
testCodegenNoPureIndexedAccess PROC:<{
testCodegenSimple PROC:<{
//
0 PUSHINT // '8=0
1 PUSHINT // '2=1
SINGLE // t1
2 PUSHINT // t1 '3=2
0 SETINDEX // t1
x{} PUSHSLICE // t1 '6
STRDUMP DROP
1 PUSHINT // t1 '10=1
SINGLE // t1 '9
SINGLE // t1 t2
2 PUSHINT // t1 t2 '11=2
OVER // t1 t2 '11=2 t2
0 INDEX // t1 t2 '11=2 '14
SWAP // t1 t2 '14 '11=2
0 SETINDEX // t1 t2 '14
0 SETINDEX // t1 t2
x{} PUSHSLICE // t1 t2 '17
STRDUMP DROP
1 PUSHINT // t1 t2 '20=1
SINGLE // t1 t2 '18
gTup SETGLOB
2 PUSHINT // t1 t2 '21=2
gTup GETGLOB // t1 t2 '21=2 g_gTup
SWAP // t1 t2 g_gTup '21=2
0 SETINDEX // t1 t2 g_gTup
gTup SETGLOB
x{} PUSHSLICE // t1 t2 '25
STRDUMP DROP
1 PUSHINT // t1 t2 '28=1
2 PUSHINT // t1 t2 '26=1 '27=2
PAIR
gTens SETGLOB
4 PUSHINT // t1 t2 g_gTens.1=4
gTens GETGLOB
UNPAIR // t1 t2 g_gTens.1=4 g_gTens.0 g_gTens.1
DROP // t1 t2 g_gTens.1=4 g_gTens.0
SWAP // t1 t2 g_gTens.0 g_gTens.1=4
PAIR
gTens SETGLOB
x{} PUSHSLICE // t1 t2 '36
STRDUMP DROP
gTup GETGLOB // t1 t2 g_gTup
gTens GETGLOB
UNPAIR // t1 t2 g_gTup g_gTens.0 g_gTens.1
}>
"""
@fif_codegen
"""
test104 PROC:<{
testCodegenNoPureIndexedAccess PROC:<{
//
5 PUSHINT // '2=5
DUP // '2=5 '3=5
PAIR // '1
SINGLE // m
10 PUSHINT // m '5=10
20 PUSHINT // m '5=10 '6=20
s2 PUSH // m '5=10 '6=20 m
0 INDEX // m '10=10 '12=20 '8
SWAP // m '10=10 '8 '12=20
1 SETINDEX // m '10=10 '8
SWAP // m '8 '10=10
0 SETINDEX // m '8
0 SETINDEX // m
...
0 PUSHINT // '8=0
}>
"""
@fif_codegen