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llvm-context: alloca at the function entry if possible (#283)

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Closes  #48

Change the code size test to no longer emit debug info as to get a more
accurate picture.

---------

Signed-off-by: Cyrill Leutwiler <bigcyrill@hotmail.com>
This commit is contained in:
xermicus
2025-04-15 15:22:24 +02:00
committed by GitHub
parent 431b5a2ce5
commit 5003f3e9ac
11 changed files with 102 additions and 89 deletions
Download Patch File Download Diff File Expand all files Collapse all files
crates/llvm-context/src/polkavm/evm/bitwise.rs
+28 -14
View File
@@ -63,7 +63,6 @@ where
let non_overflow_block = context.append_basic_block("shift_left_non_overflow");
let join_block = context.append_basic_block("shift_left_join");
let result_pointer = context.build_alloca(context.word_type(), "shift_left_result_pointer");
let condition_is_overflow = context.builder().build_int_compare(
inkwell::IntPredicate::UGT,
shift,
@@ -73,7 +72,6 @@ where
context.build_conditional_branch(condition_is_overflow, overflow_block, non_overflow_block)?;
context.set_basic_block(overflow_block);
context.build_store(result_pointer, context.word_const(0))?;
context.build_unconditional_branch(join_block);
context.set_basic_block(non_overflow_block);
@@ -81,11 +79,17 @@ where
context
.builder()
.build_left_shift(value, shift, "shift_left_non_overflow_result")?;
context.build_store(result_pointer, value)?;
context.build_unconditional_branch(join_block);
context.set_basic_block(join_block);
context.build_load(result_pointer, "shift_left_result")
let result = context
.builder()
.build_phi(context.word_type(), "shift_left_value")?;
result.add_incoming(&[
(&value, non_overflow_block),
(&context.word_const(0), overflow_block),
]);
Ok(result.as_basic_value())
}
/// Translates the bitwise shift right.
@@ -101,7 +105,6 @@ where
let non_overflow_block = context.append_basic_block("shift_right_non_overflow");
let join_block = context.append_basic_block("shift_right_join");
let result_pointer = context.build_alloca(context.word_type(), "shift_right_result_pointer");
let condition_is_overflow = context.builder().build_int_compare(
inkwell::IntPredicate::UGT,
shift,
@@ -111,7 +114,6 @@ where
context.build_conditional_branch(condition_is_overflow, overflow_block, non_overflow_block)?;
context.set_basic_block(overflow_block);
context.build_store(result_pointer, context.word_const(0))?;
context.build_unconditional_branch(join_block);
context.set_basic_block(non_overflow_block);
@@ -121,11 +123,17 @@ where
false,
"shift_right_non_overflow_result",
)?;
context.build_store(result_pointer, value)?;
context.build_unconditional_branch(join_block);
context.set_basic_block(join_block);
context.build_load(result_pointer, "shift_right_result")
let result = context
.builder()
.build_phi(context.word_type(), "shift_right_value")?;
result.add_incoming(&[
(&value, non_overflow_block),
(&context.word_const(0), overflow_block),
]);
Ok(result.as_basic_value())
}
/// Translates the arithmetic bitwise shift right.
@@ -145,8 +153,6 @@ where
let non_overflow_block = context.append_basic_block("shift_right_arithmetic_non_overflow");
let join_block = context.append_basic_block("shift_right_arithmetic_join");
let result_pointer =
context.build_alloca(context.word_type(), "shift_right_arithmetic_result_pointer");
let condition_is_overflow = context.builder().build_int_compare(
inkwell::IntPredicate::UGT,
shift,
@@ -174,11 +180,9 @@ where
)?;
context.set_basic_block(overflow_positive_block);
context.build_store(result_pointer, context.word_const(0))?;
context.build_unconditional_branch(join_block);
context.set_basic_block(overflow_negative_block);
context.build_store(result_pointer, context.word_type().const_all_ones())?;
context.build_unconditional_branch(join_block);
context.set_basic_block(non_overflow_block);
@@ -188,11 +192,21 @@ where
true,
"shift_right_arithmetic_non_overflow_result",
)?;
context.build_store(result_pointer, value)?;
context.build_unconditional_branch(join_block);
context.set_basic_block(join_block);
context.build_load(result_pointer, "shift_right_arithmetic_result")
let result = context
.builder()
.build_phi(context.word_type(), "shift_arithmetic_right_value")?;
result.add_incoming(&[
(&value, non_overflow_block),
(
&context.word_type().const_all_ones(),
overflow_negative_block,
),
(&context.word_const(0), overflow_block),
]);
Ok(result.as_basic_value())
}
/// Translates the `byte` instruction, extracting the byte of `operand_2`
crates/llvm-context/src/polkavm/evm/context.rs
+16 -16
View File
@@ -2,6 +2,7 @@
use inkwell::values::BasicValue;
use crate::polkavm::context::pointer::Pointer;
use crate::polkavm::context::Context;
use crate::polkavm::Dependency;
@@ -49,7 +50,9 @@ where
D: Dependency + Clone,
{
let address_type = context.integer_type(revive_common::BIT_LENGTH_ETH_ADDRESS);
let address_pointer = context.build_alloca_at_entry(address_type, "origin_address");
let address_pointer: Pointer<'_> = context
.get_global(crate::polkavm::GLOBAL_ADDRESS_SPILL_BUFFER)?
.into();
context.build_store(address_pointer, address_type.const_zero())?;
context.build_runtime_call(
revive_runtime_api::polkavm_imports::ORIGIN,
@@ -97,13 +100,13 @@ where
D: Dependency + Clone,
{
let output_pointer = context.build_alloca_at_entry(context.word_type(), "blockhash_out_ptr");
let index_ptr = context.build_alloca_at_entry(context.word_type(), "blockhash_index_ptr");
context.build_store(index_ptr, index)?;
let index_pointer = context.build_alloca_at_entry(context.word_type(), "blockhash_index_ptr");
context.build_store(index_pointer, index)?;
context.build_runtime_call(
revive_runtime_api::polkavm_imports::BLOCK_HASH,
&[
index_ptr.to_int(context).into(),
index_pointer.to_int(context).into(),
output_pointer.to_int(context).into(),
],
);
@@ -127,10 +130,9 @@ pub fn coinbase<'ctx, D>(
where
D: Dependency + Clone,
{
let pointer = context.build_alloca_at_entry(
context.integer_type(revive_common::BIT_LENGTH_ETH_ADDRESS),
"coinbase_output",
);
let pointer: Pointer<'_> = context
.get_global(crate::polkavm::GLOBAL_ADDRESS_SPILL_BUFFER)?
.into();
context.build_runtime_call(
revive_runtime_api::polkavm_imports::BLOCK_AUTHOR,
&[pointer.to_int(context).into()],
@@ -155,10 +157,9 @@ pub fn address<'ctx, D>(
where
D: Dependency + Clone,
{
let pointer = context.build_alloca_at_entry(
context.integer_type(revive_common::BIT_LENGTH_ETH_ADDRESS),
"address_output",
);
let pointer: Pointer<'_> = context
.get_global(crate::polkavm::GLOBAL_ADDRESS_SPILL_BUFFER)?
.into();
context.build_runtime_call(
revive_runtime_api::polkavm_imports::ADDRESS,
&[pointer.to_int(context).into()],
@@ -173,10 +174,9 @@ pub fn caller<'ctx, D>(
where
D: Dependency + Clone,
{
let pointer = context.build_alloca_at_entry(
context.integer_type(revive_common::BIT_LENGTH_ETH_ADDRESS),
"address_output",
);
let pointer: Pointer<'_> = context
.get_global(crate::polkavm::GLOBAL_ADDRESS_SPILL_BUFFER)?
.into();
context.build_runtime_call(
revive_runtime_api::polkavm_imports::CALLER,
&[pointer.to_int(context).into()],
crates/llvm-context/src/polkavm/evm/ether_gas.rs
+3 -4
View File
@@ -28,7 +28,7 @@ pub fn value<'ctx, D>(
where
D: Dependency + Clone,
{
let output_pointer = context.build_alloca(context.value_type(), "value_transferred");
let output_pointer = context.build_alloca_at_entry(context.value_type(), "value_transferred");
context.build_store(output_pointer, context.word_const(0))?;
context.build_runtime_call(
revive_runtime_api::polkavm_imports::VALUE_TRANSFERRED,
@@ -46,8 +46,7 @@ where
D: Dependency + Clone,
{
let address_pointer = context.build_address_argument_store(address)?;
let balance_pointer = context.build_alloca(context.word_type(), "balance_pointer");
let balance_pointer = context.build_alloca_at_entry(context.word_type(), "balance_pointer");
let balance = context.builder().build_ptr_to_int(
balance_pointer.value,
context.xlen_type(),
@@ -69,7 +68,7 @@ pub fn self_balance<'ctx, D>(
where
D: Dependency + Clone,
{
let balance_pointer = context.build_alloca(context.word_type(), "balance_pointer");
let balance_pointer = context.build_alloca_at_entry(context.word_type(), "balance_pointer");
let balance = context.builder().build_ptr_to_int(
balance_pointer.value,
context.xlen_type(),
crates/llvm-context/src/polkavm/evm/immutable.rs
-1
View File
@@ -257,7 +257,6 @@ where
anyhow::bail!("Immutables are not available if the contract part is undefined");
}
Some(CodeType::Deploy) => {
context.enable_immutables();
let immutable_data_pointer = context
.get_global(revive_runtime_api::immutable_data::GLOBAL_IMMUTABLE_DATA_POINTER)?
.value
crates/llvm-context/src/polkavm/evm/return.rs
+5 -7
View File
@@ -18,13 +18,11 @@ where
match context.code_type() {
None => anyhow::bail!("Return is not available if the contract part is undefined"),
Some(CodeType::Deploy) => {
if context.has_immutables() {
context.build_call(
<Store as RuntimeFunction<D>>::declaration(context),
Default::default(),
"store_immutable_data",
);
}
context.build_call(
<Store as RuntimeFunction<D>>::declaration(context),
Default::default(),
"store_immutable_data",
);
}
Some(CodeType::Runtime) => {}
}