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Reuse function argument slots and defer allocation of return variable slots in EVMCodeTransform.

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This commit is contained in:
Daniel Kirchner
2021-04-06 13:38:05 +02:00
parent 04a051d380
commit 4b0f8383a6
13 changed files with 337 additions and 102 deletions
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test/libyul/CompilabilityChecker.cpp
+123 -7
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@@ -117,16 +117,63 @@ BOOST_AUTO_TEST_CASE(many_variables_many_uses)
BOOST_CHECK_EQUAL(out, "f: 10 ");
}
BOOST_AUTO_TEST_CASE(many_return_variables)
BOOST_AUTO_TEST_CASE(many_return_variables_unused_arguments)
{
string out = check(R"({
function f(a, b) -> r1, r2, r3, r4, r5, r6, r7, r8, r9, r10, r11, r12, r13, r14, r15, r16, r17, r18, r19 {
}
})");
BOOST_CHECK_EQUAL(out, "f: 3 ");
}
BOOST_AUTO_TEST_CASE(many_return_variables_used_arguments)
{
string out = check(R"({
function f(a, b) -> r1, r2, r3, r4, r5, r6, r7, r8, r9, r10, r11, r12, r13, r14, r15, r16, r17, r18, r19 {
r1 := 0
sstore(a, b)
}
})");
BOOST_CHECK_EQUAL(out, "f: 5 ");
}
BOOST_AUTO_TEST_CASE(multiple_functions)
BOOST_AUTO_TEST_CASE(multiple_functions_used_arguments)
{
string out = check(R"({
function f(a, b) -> r1, r2, r3, r4, r5, r6, r7, r8, r9, r10, r11, r12, r13, r14, r15, r16, r17, r18, r19 {
r1 := 0
sstore(a, b)
}
function g(r1, r2, r3, r4, r5, r6, r7, r8, r9, r10, r11, r12, r13, r14, r15, r16, r17, r18, r19) -> x, y {
x := 0
sstore(r1, r2)
}
function h(x) {
let r1 := 0
let r2 := 0
let r3 := 0
let r4 := 0
let r5 := 0
let r6 := 0
let r7 := 0
let r8 := 0
let r9 := 0
let r10 := 0
let r11 := 0
let r12 := 0
let r13 := 0
let r14 := 0
let r15 := 0
let r16 := 0
let r17 := 0
let r18 := 0
x := add(add(add(add(add(add(add(add(add(add(add(add(x, r12), r11), r10), r9), r8), r7), r6), r5), r4), r3), r2), r1)
}
})");
BOOST_CHECK_EQUAL(out, "h: 9 g: 3 f: 5 ");
}
BOOST_AUTO_TEST_CASE(multiple_functions_unused_arguments)
{
string out = check(R"({
function f(a, b) -> r1, r2, r3, r4, r5, r6, r7, r8, r9, r10, r11, r12, r13, r14, r15, r16, r17, r18, r19 {
@@ -155,10 +202,47 @@ BOOST_AUTO_TEST_CASE(multiple_functions)
x := add(add(add(add(add(add(add(add(add(add(add(add(x, r12), r11), r10), r9), r8), r7), r6), r5), r4), r3), r2), r1)
}
})");
BOOST_CHECK_EQUAL(out, "h: 9 g: 5 f: 5 ");
BOOST_CHECK_EQUAL(out, "h: 9 f: 3 ");
}
BOOST_AUTO_TEST_CASE(nested)
BOOST_AUTO_TEST_CASE(nested_used_arguments)
{
string out = check(R"({
function h(x) {
let r1 := 0
let r2 := 0
let r3 := 0
let r4 := 0
let r5 := 0
let r6 := 0
let r7 := 0
let r8 := 0
let r9 := 0
let r10 := 0
let r11 := 0
let r12 := 0
let r13 := 0
let r14 := 0
let r15 := 0
let r16 := 0
let r17 := 0
let r18 := 0
function f(a, b) -> t1, t2, t3, t4, t5, t6, t7, t8, t9, t10, t11, t12, t13, t14, t15, t16, t17, t18, t19 {
function g(s1, s2, s3, s4, s5, s6, s7, s8, s9, s10, s11, s12, s13, s14, s15, s16, s17, s18, s19) -> w, v {
w := v
sstore(s1, s2)
}
t1 := t2
sstore(a, b)
}
x := add(add(add(add(add(add(add(add(add(add(add(add(x, r12), r11), r10), r9), r8), r7), r6), r5), r4), r3), r2), r1)
}
})");
BOOST_CHECK_EQUAL(out, "h: 9 g: 3 f: 5 ");
}
BOOST_AUTO_TEST_CASE(nested_unused_arguments)
{
string out = check(R"({
function h(x) {
@@ -187,10 +271,42 @@ BOOST_AUTO_TEST_CASE(nested)
x := add(add(add(add(add(add(add(add(add(add(add(add(x, r12), r11), r10), r9), r8), r7), r6), r5), r4), r3), r2), r1)
}
})");
BOOST_CHECK_EQUAL(out, "h: 9 g: 5 f: 5 ");
BOOST_CHECK_EQUAL(out, "h: 9 f: 3 ");
}
BOOST_AUTO_TEST_CASE(also_in_outer_block)
BOOST_AUTO_TEST_CASE(also_in_outer_block_used_arguments)
{
string out = check(R"({
let x := 0
let r1 := 0
let r2 := 0
let r3 := 0
let r4 := 0
let r5 := 0
let r6 := 0
let r7 := 0
let r8 := 0
let r9 := 0
let r10 := 0
let r11 := 0
let r12 := 0
let r13 := 0
let r14 := 0
let r15 := 0
let r16 := 0
let r17 := 0
let r18 := 0
x := add(add(add(add(add(add(add(add(add(add(add(add(x, r12), r11), r10), r9), r8), r7), r6), r5), r4), r3), r2), r1)
function g(s1, s2, s3, s4, s5, s6, s7, s8, s9, s10, s11, s12, s13, s14, s15, s16, s17, s18, s19) -> w, v {
w := v
sstore(s1, s2)
}
})");
BOOST_CHECK_EQUAL(out, "g: 3 : 9 ");
}
BOOST_AUTO_TEST_CASE(also_in_outer_block_unused_arguments)
{
string out = check(R"({
let x := 0
@@ -216,7 +332,7 @@ BOOST_AUTO_TEST_CASE(also_in_outer_block)
function g(s1, s2, s3, s4, s5, s6, s7, s8, s9, s10, s11, s12, s13, s14, s15, s16, s17, s18, s19) -> w, v {
}
})");
BOOST_CHECK_EQUAL(out, "g: 5 : 9 ");
BOOST_CHECK_EQUAL(out, ": 9 ");
}
BOOST_AUTO_TEST_SUITE_END()