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| author | chriseth <chris@ethereum.org> | 2018-10-17 03:38:23 +0800 |
|---|---|---|
| committer | chriseth <chris@ethereum.org> | 2018-10-18 20:54:23 +0800 |
| commit | c34fa43d5ba9aa2a9b52d3cc06e4150545fd0b35 (patch) | |
| tree | b4e0d1c39c7010103579e2b9cc19b37ed3c55bdd | |
| parent | 7609e2871e77b623d4c6187b7ebed693ce74cd0e (diff) | |
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Test case that shows a CSE bug related to scopes.
| -rw-r--r-- | test/libyul/yulOptimizerTests/commonSubexpressionEliminator/scopes.yul | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/test/libyul/yulOptimizerTests/commonSubexpressionEliminator/scopes.yul b/test/libyul/yulOptimizerTests/commonSubexpressionEliminator/scopes.yul new file mode 100644 index 00000000..35270d87 --- /dev/null +++ b/test/libyul/yulOptimizerTests/commonSubexpressionEliminator/scopes.yul @@ -0,0 +1,25 @@ +{ + let a := 10 + let x := 20 + { + let b := calldataload(0) + let d := calldataload(1) + x := d + } + // We had a bug where "calldataload(0)" was incorrectly replaced by "b" + mstore(0, calldataload(0)) + mstore(0, x) +} +// ---- +// commonSubexpressionEliminator +// { +// let a := 10 +// let x := 20 +// { +// let b := calldataload(0) +// let d := calldataload(1) +// x := d +// } +// mstore(0, b) +// mstore(0, x) +// } |