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| author | chriseth <chris@ethereum.org> | 2018-12-13 18:33:45 +0800 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2018-12-13 18:33:45 +0800 |
| commit | 642c69f935c41d70f0dcfb0e89fcf3e626f7b38f (patch) | |
| tree | 5b4cdf0d2e65cba050cf92d8de226e33ef73c2cd /test | |
| parent | 6e205cc4e32ccc55307a44ade4269448f6346924 (diff) | |
| parent | 9557dd7e74a801ebafaf4777d60a591b0c484779 (diff) | |
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Merge pull request #5641 from ethereum/supportUnassigned
[Yul] Support unassigned variables in the SSA value tracker and the data flow analyzer.
Diffstat (limited to 'test')
6 files changed, 50 insertions, 6 deletions
diff --git a/test/libyul/yulOptimizerTests/commonSubexpressionEliminator/unassigned_variables.yul b/test/libyul/yulOptimizerTests/commonSubexpressionEliminator/unassigned_variables.yul new file mode 100644 index 00000000..a790ca65 --- /dev/null +++ b/test/libyul/yulOptimizerTests/commonSubexpressionEliminator/unassigned_variables.yul @@ -0,0 +1,14 @@ +{ + // This does not replace b by a because there is no + // explicit assignment, even though both hold the same value. + let a + let b + mstore(sub(a, b), 7) +} +// ---- +// commonSubexpressionEliminator +// { +// let a +// let b +// mstore(sub(a, b), 7) +// } diff --git a/test/libyul/yulOptimizerTests/expressionSimplifier/unassigend_vars_multi.yul b/test/libyul/yulOptimizerTests/expressionSimplifier/unassigend_vars_multi.yul index 8c1ad789..f260db0b 100644 --- a/test/libyul/yulOptimizerTests/expressionSimplifier/unassigend_vars_multi.yul +++ b/test/libyul/yulOptimizerTests/expressionSimplifier/unassigend_vars_multi.yul @@ -1,5 +1,4 @@ -// c & d can't be optimized as expression simplifier doesn't handle default -// values yet +// Unassigned variables are assumed to be zero. { let c, d let y := add(d, add(c, 7)) @@ -8,5 +7,5 @@ // expressionSimplifier // { // let c, d -// let y := add(add(d, c), 7) +// let y := 7 // } diff --git a/test/libyul/yulOptimizerTests/expressionSimplifier/unassigned_vars.yul b/test/libyul/yulOptimizerTests/expressionSimplifier/unassigned_vars.yul index 87391b8c..7b1430f3 100644 --- a/test/libyul/yulOptimizerTests/expressionSimplifier/unassigned_vars.yul +++ b/test/libyul/yulOptimizerTests/expressionSimplifier/unassigned_vars.yul @@ -1,5 +1,4 @@ -// c & d can't be optimized as expression simplifier doesn't handle default -// values yet +// Unassigned variables are assumed to be zero. { let c let d @@ -10,5 +9,5 @@ // { // let c // let d -// let y := add(add(d, c), 7) +// let y := 7 // } diff --git a/test/libyul/yulOptimizerTests/fullInliner/large_function_multi_use.yul b/test/libyul/yulOptimizerTests/fullInliner/large_function_multi_use.yul index 0972ac56..ec44dafb 100644 --- a/test/libyul/yulOptimizerTests/fullInliner/large_function_multi_use.yul +++ b/test/libyul/yulOptimizerTests/fullInliner/large_function_multi_use.yul @@ -13,6 +13,9 @@ let r := f(a) // This should be inlined because it is a constant let t := f(a2) + let a3 + // This should be inlined because it is a constant as well (zero) + let s := f(a3) } // ---- // fullInliner @@ -30,6 +33,16 @@ // let f_y := add(f_a, f_x) // sstore(f_y, 10) // let t := f_b +// let a3 +// let f_a_5 := a3 +// let f_b_6 +// let f_x_7 := mload(f_a_5) +// f_b_6 := sload(f_x_7) +// let f_c_8 := 3 +// mstore(mul(f_a_5, f_b_6), mload(f_x_7)) +// let f_y_11 := add(f_a_5, f_x_7) +// sstore(f_y_11, 10) +// let s := f_b_6 // } // function f(a) -> b // { diff --git a/test/libyul/yulOptimizerTests/structuralSimplifier/if_multi_unassigned_condition.yul b/test/libyul/yulOptimizerTests/structuralSimplifier/if_multi_unassigned_condition.yul new file mode 100644 index 00000000..0ece5dbd --- /dev/null +++ b/test/libyul/yulOptimizerTests/structuralSimplifier/if_multi_unassigned_condition.yul @@ -0,0 +1,10 @@ +{ + let x, y + if x { mstore(0, 0) } + if y { mstore(0, 0) } +} +// ---- +// structuralSimplifier +// { +// let x, y +// } diff --git a/test/libyul/yulOptimizerTests/structuralSimplifier/if_unassigned_condition.yul b/test/libyul/yulOptimizerTests/structuralSimplifier/if_unassigned_condition.yul new file mode 100644 index 00000000..a327a882 --- /dev/null +++ b/test/libyul/yulOptimizerTests/structuralSimplifier/if_unassigned_condition.yul @@ -0,0 +1,9 @@ +{ + let x + if x { mstore(0, 0) } +} +// ---- +// structuralSimplifier +// { +// let x +// } |