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Merge pull request #1316 from topos-protocol/memcpy_tiny

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Move empty check inside final iteration of memcpy_bytes
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Robin Salen 2023-10-30 14:12:18 -04:00 committed by GitHub
commit 0f299d4c2e
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1 changed files with 9 additions and 9 deletions
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18
evm/src/cpu/kernel/asm/memory/memcpy.asm
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@ -52,15 +52,6 @@ global memcpy:
global memcpy_bytes: global memcpy_bytes:
// stack: DST, SRC, count, retdest // stack: DST, SRC, count, retdest
// Handle empty case
DUP7
// stack: count, DST, SRC, count, retdest
ISZERO
// stack: count == 0, DST, SRC, count, retdest
%jumpi(memcpy_finish)
// stack: DST, SRC, count, retdest
// Handle small case // Handle small case
DUP7 DUP7
// stack: count, DST, SRC, count, retdest // stack: count, DST, SRC, count, retdest
@ -104,6 +95,15 @@ global memcpy_bytes:
memcpy_bytes_finish: memcpy_bytes_finish:
// stack: DST, SRC, count, retdest // stack: DST, SRC, count, retdest
// Handle empty case
DUP7
// stack: count, DST, SRC, count, retdest
ISZERO
// stack: count == 0, DST, SRC, count, retdest
%jumpi(memcpy_finish)
// stack: DST, SRC, count, retdest
// Copy the last chunk of `count` bytes. // Copy the last chunk of `count` bytes.
DUP7 DUP7
DUP1 DUP1