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Merge pull request #13040 from ethereum/returndatacopyOptimizer

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Do not remove potentially reverting returndatacopy cases.
This commit is contained in:
chriseth
2022-05-23 11:32:26 +02:00
committed by GitHub
parent be85d287b4 9fa907aac2
commit 2bbc9a1445
6 changed files with 73 additions and 1 deletions
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test/libyul/yulOptimizerTests/unusedStoreEliminator/returndatacopy_fixed_size.yul
+9
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@@ -0,0 +1,9 @@
{
returndatacopy(0,0,32)
}
// ====
// EVMVersion: >homestead
// ----
// step: unusedStoreEliminator
//
// { { returndatacopy(0, 0, 32) } }
test/libyul/yulOptimizerTests/unusedStoreEliminator/returndatacopy_returndatasize.yul
+15
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@@ -0,0 +1,15 @@
{
returndatacopy(0,0,returndatasize())
}
// ====
// EVMVersion: >homestead
// ----
// step: unusedStoreEliminator
//
// {
// {
// let _1 := returndatasize()
// let _2 := 0
// let _3 := 0
// }
// }
test/libyul/yulOptimizerTests/unusedStoreEliminator/returndatacopy_returndatasize_nonzero_start.yul
+13
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@@ -0,0 +1,13 @@
{
returndatacopy(0,1,returndatasize())
}
// ====
// EVMVersion: >homestead
// ----
// step: unusedStoreEliminator
//
// {
// {
// returndatacopy(0, 1, returndatasize())
// }
// }
test/libyul/yulOptimizerTests/unusedStoreEliminator/returndatacopy_returndatasize_var.yul
+16
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@@ -0,0 +1,16 @@
{
let s := returndatasize()
returndatacopy(0,0,s)
}
// ====
// EVMVersion: >homestead
// ----
// step: unusedStoreEliminator
//
// {
// {
// let s := returndatasize()
// let _1 := 0
// let _2 := 0
// }
// }